Author: "Tetoni, Eleni" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Tetoni, Eleni"' showing total 42 results

Start Over Author "Tetoni, Eleni"

42 results on '"Tetoni, Eleni"'

1. EUREC 4 A

Author: Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Stevens, Bjorn, Bony, Sandrine, Farrell, David, Ament, Felix, Blyth, Alan, Fairall, Christopher, Karstensen, Johannes, Quinn, Patricia K., Speich, Sabrina, Acquistapace, Claudia, Aemisegger, Franziska, Albright, Anna Lea, Bellenger, Hugo, Bodenschatz, Eberhard, Caesar, Kathy-Ann, Chewitt-Lucas, Rebecca, de Boer, Gijs, Delanoë, Julien, Denby, Leif, Ewald, Florian, Fildier, Benjamin, Forde, Marvin, George, Geet, Gross, Silke, Hagen, Martin, Hausold, Andrea, Heywood, Karen J., Hirsch, Lutz, Jacob, Marek, Jansen, Friedhelm, Kinne, Stefan, Klocke, Daniel, Kölling, Tobias, Konow, Heike, Lothon, Marie, Mohr, Wiebke, Naumann, Ann Kristin, Nuijens, Louise, Olivier, Léa, Pincus, Robert, Pöhlker, Mira, Reverdin, Gilles, Roberts, Gregory, Schnitt, Sabrina, Schulz, Hauke, Siebesma, A. Pier, Stephan, Claudia Christine, Sullivan, Peter, Touzé-Peiffer, Ludovic, Vial, Jessica, Vogel, Raphaela, Zuidema, Paquita, Alexander, Nicola, Alves, Lyndon, Arixi, Sophian, Asmath, Hamish, Bagheri, Gholamhossein, Baier, Katharina, Bailey, Adriana, Baranowski, Dariusz, Baron, Alexandre, Barrau, Sébastien, Barrett, Paul A., Batier, Frédéric, Behrendt, Andreas, Bendinger, Arne, Beucher, Florent, Bigorre, Sebastien, Blades, Edmund, Blossey, Peter, Bock, Olivier, Böing, Steven, Bosser, Pierre, Bourras, Denis, Bouruet-Aubertot, Pascale, Bower, Keith, Branellec, Pierre, Branger, Hubert, Brennek, Michal, Brewer, Alan, Brilouet, Pierre-Etienne, Brügmann, Björn, Buehler, Stefan A., Burke, Elmo, Burton, Ralph, Calmer, Radiance, Canonici, Jean-Christophe, Carton, Xavier, Cato Jr., Gregory, Charles, Jude Andre, Chazette, Patrick, Chen, Yanxu, Chilinski, Michal T., Choularton, Thomas, Chuang, Patrick, Clarke, Shamal, Coe, Hugh, Cornet, Céline, Coutris, Pierre, Couvreux, Fleur, Crewell, Susanne, Cronin, Timothy, Cui, Zhiqiang, Cuypers, Yannis, Daley, Alton, Damerell, Gillian M., Dauhut, Thibaut, Deneke, Hartwig, Desbios, Jean-Philippe, Dörner, Steffen, Donner, Sebastian, Douet, Vincent, Drushka, Kyla, Dütsch, Marina, Ehrlich, André, Emanuel, Kerry, Emmanouilidis, Alexandros, Etienne, Jean-Claude, Etienne-Leblanc, Sheryl, Faure, Ghislain, Feingold, Graham, Ferrero, Luca, Fix, Andreas, Flamant, Cyrille, Flatau, Piotr Jacek, Foltz, Gregory R., Forster, Linda, Furtuna, Iulian, Gadian, Alan, Galewsky, Joseph, Gallagher, Martin, Gallimore, Peter, Gaston, Cassandra, Gentemann, Chelle, Geyskens, Nicolas, Giez, Andreas, Gollop, John, Gouirand, Isabelle, Gourbeyre, Christophe, de Graaf, Dörte, de Groot, Geiske E., Grosz, Robert, Güttler, Johannes, Gutleben, Manuel, Hall, Kashawn, Harris, George, Helfer, Kevin C., Henze, Dean, Herbert, Calvert, Holanda, Bruna, Ibanez-Landeta, Antonio, Intrieri, Janet, Iyer, Suneil, Julien, Fabrice, Kalesse, Heike, Kazil, Jan, Kellman, Alexander, Kidane, Abiel T., Kirchner, Ulrike, Klingebiel, Marcus, Körner, Mareike, Kremper, Leslie Ann, Kretzschmar, Jan, Krüger, Ovid, Kumala, Wojciech, Kurz, Armin, L'Hégaret, Pierre, Labaste, Matthieu, Lachlan-Cope, Tom, Laing, Arlene, Landschützer, Peter, Lang, Theresa, Lange, Diego, Lange, Ingo, Laplace, Clément, Lavik, Gauke, Laxenaire, Rémi, Le Bihan, Caroline, Leandro, Mason, Lefevre, Nathalie, Lena, Marius, Lenschow, Donald, Li, Qiang, Lloyd, Gary, Los, Sebastian, Losi, Niccolò, Lovell, Oscar, Luneau, Christopher, Makuch, Przemyslaw, Malinowski, Szymon, Manta, Gaston, Marinou, Eleni, Marsden, Nicholas, Masson, Sebastien, Maury, Nicolas, Mayer, Bernhard, Mayers-Als, Margarette, Mazel, Christophe, McGeary, Wayne, McWilliams, James C., Mech, Mario, Mehlmann, Melina, Meroni, Agostino Niyonkuru, Mieslinger, Theresa, Minikin, Andreas, Minnett, Peter, Möller, Gregor, Morfa Avalos, Yanmichel, Muller, Caroline, Musat, Ionela, Napoli, Anna, Neuberger, Almuth, Noisel, Christophe, Noone, David, Nordsiek, Freja, Nowak, Jakub L., Oswald, Lothar, Parker, Douglas J., Peck, Carolyn, Person, Renaud, Philippi, Miriam, Plueddemann, Albert, Pöhlker, Christopher, Pörtge, Veronika, Pöschl, Ulrich, Pologne, Lawrence, Posyniak, Michał, Prange, Marc, Quiñones Meléndez, Estefanía, Radtke, Jule, Ramage, Karim, Reimann, Jens, Renault, Lionel, Reus, Klaus, Reyes, Ashford, Ribbe, Joachim, Ringel, Maximilian, Ritschel, Markus, Rocha, Cesar B., Rochetin, Nicolas, Röttenbacher, Johannes, Rollo, Callum, Royer, Haley, Sadoulet, Pauline, Saffin, Leo, Sandiford, Sanola, Sandu, Irina, Schäfer, Michael, Schemann, Vera, Schirmacher, Imke, Schlenczek, Oliver, Schmidt, Jerome, Schröder, Marcel, Schwarzenboeck, Alfons, Sealy, Andrea, Senff, Christoph J., Serikov, Ilya, Shohan, Samkeyat, Siddle, Elizabeth, Smirnov, Alexander, Späth, Florian, Spooner, Branden, Stolla, M. Katharina, Szkółka, Wojciech, de Szoeke, Simon P., Tarot, Stéphane, Tetoni, Eleni, Thompson, Elizabeth, Thomson, Jim, Tomassini, Lorenzo, Totems, Julien, Ubele, Alma Anna, Villiger, Leonie, von Arx, Jan, Wagner, Thomas, Walther, Andi, Webber, Ben, Wendisch, Manfred, Whitehall, Shanice, Wiltshire, Anton, Wing, Allison A., Wirth, Martin, Wiskandt, Jonathan, Wolf, Kevin, Worbes, Ludwig, Wright, Ethan, Wulfmeyer, Volker, Young, Shanea, Zhang, Chidong, Zhang, Dongxiao, Ziemen, Florian, Zinner, Tobias, Zöger, Martin, Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Stevens, Bjorn, Bony, Sandrine, Farrell, David, Ament, Felix, Blyth, Alan, Fairall, Christopher, Karstensen, Johannes, Quinn, Patricia K., Speich, Sabrina, Acquistapace, Claudia, Aemisegger, Franziska, Albright, Anna Lea, Bellenger, Hugo, Bodenschatz, Eberhard, Caesar, Kathy-Ann, Chewitt-Lucas, Rebecca, de Boer, Gijs, Delanoë, Julien, Denby, Leif, Ewald, Florian, Fildier, Benjamin, Forde, Marvin, George, Geet, Gross, Silke, Hagen, Martin, Hausold, Andrea, Heywood, Karen J., Hirsch, Lutz, Jacob, Marek, Jansen, Friedhelm, Kinne, Stefan, Klocke, Daniel, Kölling, Tobias, Konow, Heike, Lothon, Marie, Mohr, Wiebke, Naumann, Ann Kristin, Nuijens, Louise, Olivier, Léa, Pincus, Robert, Pöhlker, Mira, Reverdin, Gilles, Roberts, Gregory, Schnitt, Sabrina, Schulz, Hauke, Siebesma, A. Pier, Stephan, Claudia Christine, Sullivan, Peter, Touzé-Peiffer, Ludovic, Vial, Jessica, Vogel, Raphaela, Zuidema, Paquita, Alexander, Nicola, Alves, Lyndon, Arixi, Sophian, Asmath, Hamish, Bagheri, Gholamhossein, Baier, Katharina, Bailey, Adriana, Baranowski, Dariusz, Baron, Alexandre, Barrau, Sébastien, Barrett, Paul A., Batier, Frédéric, Behrendt, Andreas, Bendinger, Arne, Beucher, Florent, Bigorre, Sebastien, Blades, Edmund, Blossey, Peter, Bock, Olivier, Böing, Steven, Bosser, Pierre, Bourras, Denis, Bouruet-Aubertot, Pascale, Bower, Keith, Branellec, Pierre, Branger, Hubert, Brennek, Michal, Brewer, Alan, Brilouet, Pierre-Etienne, Brügmann, Björn, Buehler, Stefan A., Burke, Elmo, Burton, Ralph, Calmer, Radiance, Canonici, Jean-Christophe, Carton, Xavier, Cato Jr., Gregory, Charles, Jude Andre, Chazette, Patrick, Chen, Yanxu, Chilinski, Michal T., Choularton, Thomas, Chuang, Patrick, Clarke, Shamal, Coe, Hugh, Cornet, Céline, Coutris, Pierre, Couvreux, Fleur, Crewell, Susanne, Cronin, Timothy, Cui, Zhiqiang, Cuypers, Yannis, Daley, Alton, Damerell, Gillian M., Dauhut, Thibaut, Deneke, Hartwig, Desbios, Jean-Philippe, Dörner, Steffen, Donner, Sebastian, Douet, Vincent, Drushka, Kyla, Dütsch, Marina, Ehrlich, André, Emanuel, Kerry, Emmanouilidis, Alexandros, Etienne, Jean-Claude, Etienne-Leblanc, Sheryl, Faure, Ghislain, Feingold, Graham, Ferrero, Luca, Fix, Andreas, Flamant, Cyrille, Flatau, Piotr Jacek, Foltz, Gregory R., Forster, Linda, Furtuna, Iulian, Gadian, Alan, Galewsky, Joseph, Gallagher, Martin, Gallimore, Peter, Gaston, Cassandra, Gentemann, Chelle, Geyskens, Nicolas, Giez, Andreas, Gollop, John, Gouirand, Isabelle, Gourbeyre, Christophe, de Graaf, Dörte, de Groot, Geiske E., Grosz, Robert, Güttler, Johannes, Gutleben, Manuel, Hall, Kashawn, Harris, George, Helfer, Kevin C., Henze, Dean, Herbert, Calvert, Holanda, Bruna, Ibanez-Landeta, Antonio, Intrieri, Janet, Iyer, Suneil, Julien, Fabrice, Kalesse, Heike, Kazil, Jan, Kellman, Alexander, Kidane, Abiel T., Kirchner, Ulrike, Klingebiel, Marcus, Körner, Mareike, Kremper, Leslie Ann, Kretzschmar, Jan, Krüger, Ovid, Kumala, Wojciech, Kurz, Armin, L'Hégaret, Pierre, Labaste, Matthieu, Lachlan-Cope, Tom, Laing, Arlene, Landschützer, Peter, Lang, Theresa, Lange, Diego, Lange, Ingo, Laplace, Clément, Lavik, Gauke, Laxenaire, Rémi, Le Bihan, Caroline, Leandro, Mason, Lefevre, Nathalie, Lena, Marius, Lenschow, Donald, Li, Qiang, Lloyd, Gary, Los, Sebastian, Losi, Niccolò, Lovell, Oscar, Luneau, Christopher, Makuch, Przemyslaw, Malinowski, Szymon, Manta, Gaston, Marinou, Eleni, Marsden, Nicholas, Masson, Sebastien, Maury, Nicolas, Mayer, Bernhard, Mayers-Als, Margarette, Mazel, Christophe, McGeary, Wayne, McWilliams, James C., Mech, Mario, Mehlmann, Melina, Meroni, Agostino Niyonkuru, Mieslinger, Theresa, Minikin, Andreas, Minnett, Peter, Möller, Gregor, Morfa Avalos, Yanmichel, Muller, Caroline, Musat, Ionela, Napoli, Anna, Neuberger, Almuth, Noisel, Christophe, Noone, David, Nordsiek, Freja, Nowak, Jakub L., Oswald, Lothar, Parker, Douglas J., Peck, Carolyn, Person, Renaud, Philippi, Miriam, Plueddemann, Albert, Pöhlker, Christopher, Pörtge, Veronika, Pöschl, Ulrich, Pologne, Lawrence, Posyniak, Michał, Prange, Marc, Quiñones Meléndez, Estefanía, Radtke, Jule, Ramage, Karim, Reimann, Jens, Renault, Lionel, Reus, Klaus, Reyes, Ashford, Ribbe, Joachim, Ringel, Maximilian, Ritschel, Markus, Rocha, Cesar B., Rochetin, Nicolas, Röttenbacher, Johannes, Rollo, Callum, Royer, Haley, Sadoulet, Pauline, Saffin, Leo, Sandiford, Sanola, Sandu, Irina, Schäfer, Michael, Schemann, Vera, Schirmacher, Imke, Schlenczek, Oliver, Schmidt, Jerome, Schröder, Marcel, Schwarzenboeck, Alfons, Sealy, Andrea, Senff, Christoph J., Serikov, Ilya, Shohan, Samkeyat, Siddle, Elizabeth, Smirnov, Alexander, Späth, Florian, Spooner, Branden, Stolla, M. Katharina, Szkółka, Wojciech, de Szoeke, Simon P., Tarot, Stéphane, Tetoni, Eleni, Thompson, Elizabeth, Thomson, Jim, Tomassini, Lorenzo, Totems, Julien, Ubele, Alma Anna, Villiger, Leonie, von Arx, Jan, Wagner, Thomas, Walther, Andi, Webber, Ben, Wendisch, Manfred, Whitehall, Shanice, Wiltshire, Anton, Wing, Allison A., Wirth, Martin, Wiskandt, Jonathan, Wolf, Kevin, Worbes, Ludwig, Wright, Ethan, Wulfmeyer, Volker, Young, Shanea, Zhang, Chidong, Zhang, Dongxiao, Ziemen, Florian, Zinner, Tobias, and Zöger, Martin
Abstract: Abstract. The science guiding the EUREC4A campaign and its measurements is presented. EUREC4A comprised roughly 5 weeks of measurements in the downstream winter trades of the North Atlantic – eastward and southeastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, EUREC4A marked a turning point in our ability to observationally study factors influencing clouds in the trades, how they will respond to warming, and their link to other components of the earth system, such as upper-ocean processes or the life cycle of particulate matter. This characterization was made possible by thousands (2500) of sondes distributed to measure circulations on meso- (200 km) and larger (500 km) scales, roughly 400 h of flight time by four heavily instrumented research aircraft; four global-class research vessels; an advanced ground-based cloud observatory; scores of autonomous observing platforms operating in the upper ocean (nearly 10 000 profiles), lower atmosphere (continuous profiling), and along the air–sea interface; a network of water stable isotopologue measurements; targeted tasking of satellite remote sensing; and modeling with a new generation of weather and climate models. In addition to providing an outline of the novel measurements and their composition into a unified and coordinated campaign, the six distinct scientific facets that EUREC4A explored – from North Brazil Current rings to turbulence-induced clustering of cloud droplets and its influence on warm-rain formation – are presented along with an overview of EUREC4A's outreach activities, environmental impact, and guidelines for scientific practice. Track data for all platforms are standardized and accessible at https://doi.org/10.25326/165 (Stevens, 2021), and a film documenting the campaign is provided as a video supplement.
Published: 2023

2. Lidar Based Separation of Polluted Dust Observed Over Warsaw (Case Study on 09 August 2013)

Author: Szczepanik Dominika, Tetoni Eleni, Wang Dongxiang, and Stachlewska Iwona S.
Subjects: Physics, QC1-999
Abstract: This paper presents preliminary results of using an extended POLIPHON method for separation of dust and non-dust aerosol backscatter coefficient, applied on a case study of 9th August 2013. That day, long-range transport of mineral dust over EARLINET-ACTRIS lidar site in Warsaw was observed with the 8-channel PollyXT-UW lidar. The dust particles were also observed by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on board the CALIPSO satellite. The backward trajectories calculated using the HYSPLIT model confirmed the air-mass transport from Northern Africa. Results yield possible dust separation for the mixture of dust with other aerosol types, such as pollution, marine type, etc.
Published: 2020
Full Text: View/download PDF

3. Retrievals of ice microphysical properties using dual-wavelength polarimetric radar observations during stratiform precipitation events

Author: Tetoni, Eleni, Ewald, Florian, Hagen, Martin, Köcher, Gregor, Zinner, Tobias, and Groß, Silke Martha
Subjects: ice microphysics, dual-wavelength radar method, ice scattering simulations, Physics::Atmospheric and Oceanic Physics, polarimetry
Abstract: Ice growth processes within clouds affect the type and amount of precipitation. Hence, the importance of an accurate representation of ice microphysics in numerical weather and numerical climate models has been confirmed by several studies. To better constrain ice processes in models, we need to study ice cloud regions before and during monitored precipitation events. For this purpose, two radar instruments facing each other were used to collect complementary measurements. The C-band POLDIRAD weather radar from the German Aerospace Center (DLR) in Oberpfaffenhofen and the Ka-band MIRA-35 cloud radar from the Ludwig Maximilians University of Munich (LMU) were used to monitor stratiform precipitation in the vertical cross-sectional area between the two instruments. The logarithmic difference of radar reflectivities at two different wavelengths (54.5 and 8.5 mm), known as the dual-wavelength ratio, was exploited to provide information about the size of the detected ice hydrometeors, taking advantage of the different scattering behavior in the Rayleigh and Mie regime. Along with the dual-wavelength ratio, differential radar reflectivity measurements from POLDIRAD provided information about the apparent shape of the detected ice hydrometeors. Scattering simulations using the T-matrix method were performed for oblate and horizontally aligned prolate ice spheroids of varying shape and size using a realistic particle size distribution and a well-established mass–size relationship. The combination of dual-wavelength ratio, radar reflectivity, and differential radar reflectivity measurements as well as scattering simulations was used for the development of a novel retrieval for ice cloud microphysics. The development of the retrieval scheme also comprised a method to estimate the hydrometeor attenuation in both radar bands. To demonstrate this approach, a feasibility study was conducted on three stratiform snow events which were monitored over Munich in January 2019. The ice retrieval can provide ice particle shape, size, and mass information which is in line with differential radar reflectivity, dual-wavelength ratio, and radar reflectivity observations, respectively, when the ice spheroids are assumed to be oblates and to follow the mass–size relation of aggregates. When combining two spatially separated radars to retrieve ice microphysics, the beam width mismatch can locally lead to significant uncertainties. However, the calibration uncertainty is found to cause the largest bias for the averaged retrieved size and mass. Moreover, the shape assumption is found to be equally important to the calibration uncertainty for the retrieved size, while it is less important than the calibration uncertainty for the retrieval of ice mass. A further finding is the importance of the differential radar reflectivity for the particle size retrieval directly above the MIRA-35 cloud radar. Especially for that observation geometry, the simultaneous slantwise observation from the polarimetric weather radar POLDIRAD can reduce ambiguities in retrieval of the ice particle size by constraining the ice particle shape.
Published: 2022

4. Retrievals of ice microphysical properties using dual-wavelength polarimetric radar observations during stratiform precipitation events

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Hagen, Martin, additional, Köcher, Gregor, additional, Zinner, Tobias, additional, and Groß, Silke, additional
Published: 2022
Full Text: View/download PDF

5. Evaluation of convective cloud microphysics in numerical weather prediction models with dual-wavelength polarimetric radar observations: methods and examples

Author: Köcher, Gregor, Zinner, Tobias, Knote, Christoph, Tetoni, Eleni, Ewald, Florian, and Hagen, Martin
Subjects: Atmospheric Science, Cloud microphysics, Dual-wavelength polarimetric radar observations, ddc:004, Model evaluation, Physics::Atmospheric and Oceanic Physics
Abstract: The representation of cloud microphysical processes contributes substantially to the uncertainty of numerical weather simulations. In part, this is owed to some fundamental knowledge gaps in the underlying processes due to the difficulty of observing them directly. On the path to closing these gaps, we present a setup for the systematic characterization of differences between numerical weather model and radar observations for convective weather situations. Radar observations are introduced which provide targeted dual-wavelength and polarimetric measurements of convective clouds with the potential to provide more detailed information about hydrometeor shapes and sizes. A convection-permitting regional weather model setup is established using five different microphysics schemes (double-moment, spectral bin (“Fast Spectral Bin Microphysics”, FSBM), and particle property prediction (P3)). Observations are compared to hindcasts which are created with a polarimetric radar forward simulator for all measurement days. A cell-tracking algorithm applied to radar and model data facilitates comparison on a cell object basis. Statistical comparisons of radar observations and numerical weather model runs are presented on a data set of 30 convection days. In general, simulations show too few weak and small-scale convective cells. Contoured frequency by altitude diagrams of radar signatures reveal deviations between the schemes and observations in ice and liquid phase. Apart from the P3 scheme, high reflectivities in the ice phase are simulated too frequently. Dual-wavelength signatures demonstrate issues of most schemes to correctly represent ice particle size distributions, producing too large or too dense graupel particles. Comparison of polarimetric radar signatures reveals issues of all schemes except the FSBM to correctly represent rain particle size distributions.
Published: 2022

6. Evaluation of convective cloud microphysics in numerical weather prediction models with dual-wavelength polarimetric radar observations

Author: Köcher, Gregor, primary, Ewald, Florian, additional, Hagen, Martin, additional, Knote, Christoph, additional, Tetoni, Eleni, additional, and Zinner, Tobias, additional
Published: 2022
Full Text: View/download PDF

7. Ice microphysics retrievals using polarimetric and dual-wavelength radar data – a sensitivity study regarding the assumed ice particle model

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Hagen, Martin, additional, Köcher, Gregor, additional, Zinner, Tobias, additional, Mayer, Bernhard, additional, and Groß, Silke, additional
Published: 2022
Full Text: View/download PDF

8. Evaluation of convective cloud microphysics in numerical weather prediction models with dual-wavelength polarimetric radar observations: methods and examples

Author: Köcher, Gregor, primary, Zinner, Tobias, additional, Knote, Christoph, additional, Tetoni, Eleni, additional, Ewald, Florian, additional, and Hagen, Martin, additional
Published: 2022
Full Text: View/download PDF

9. Synergy of multi-wavelength radar observations with polarimetry to retrieve ice cloud microphysics

Author: Tetoni, Eleni
Subjects: FOS: Physical sciences
Published: 2022
Full Text: View/download PDF

10. Deployment of the C-band radar Poldirad on Barbados during EUREC4A

Author: Hagen, Martin, Ewald, Florian, Groß, Silke Martha, Oswald, Lothar, Farrell, David A., Forde, Marvin, Gutleben, Manuel, Heumos, Johann, Reimann, Jens, Tetoni, Eleni, Köcher, Gregor, Marinou, Eleni, Kiemle, Christoph, Li, Qiang, Chewitt-Lucas, Rebecca, Daley, Alton, Grant, Delando, and Hall, Kashawn
Subjects: trade wind region, Weather radar, EUREC4A campaign, polarization radar
Abstract: The German polarimetric C-band weather radar Poldirad (Polarization Diversity Radar) was deployed for the international field campaign EUREC4A (Elucidating the role of clouds–circulation coupling in climate) on the island of Barbados where it was operated from February until August 2020. Focus of the installation was monitoring clouds and precipitation in the trade wind region east of Barbados. Different scanning modes were used with a temporal sequence of 5 min and a maximum range of 375 km. In addition to built-in quality control performed by the radar signal processor, it was found that the copoloar correlation coefficient ρHV can be used to remove contamination of radar products by sea clutter. Radar images were available in real time for all campaign participants and aboard research aircraft. Examples of mesoscale precipitation patterns, rain rate accumulation, diurnal cycle, and vertical distribution are given to show the potential of the radar measurements for further studies on the life cycle of precipitating shallow cumulus clouds and other related aspects. Poldirad data from the EUREC4A campaign are available on the EUREC4A AERIS database: https://doi.org/10.25326/218 (Hagen et al., 2021a) for raw data and https://doi.org/10.25326/217 (Hagen et al., 2021b) for gridded data.
Published: 2021

11. Properties of Saharan Dust Versus Local Urban Dust—A Case Study

Author: Szczepanik, Dominika, Stachlewska, Iwona Sylwia, Tetoni, Eleni, and Althausen, Dietrich
Subjects: mineral dust, particles, QE1-996.5, aerosol, Astronomy, QB1-991, Geology, Environmental Science (miscellaneous), Mineral dust, Atmospheric sciences, complex mixtures, Aerosol, respiratory tract diseases, Lidar, Unusually fast, urban dust, and quasi-stable pure mineral dust inflow form Sahara Desert to East-Central Europe// Advected Saharan dust composed of significant fractions of fine and coarse mode dust particles evolving in time//Local urban/agro dust with no evidence of coarse mode particles, General Earth and Planetary Sciences, Environmental science, agro dust, uniform, lidar
Abstract: On June 29–30, 2019, the Barcelona Dust Forecast Center with Non‐hydrostatic Multiscale Model (NMMB/BSC‐Dust) and the Navy Aerosol Analysis and Prediction System forecasted huge amounts of mineral dust over Poland. The Hybrid Single Particle Lagrangian Integrated Trajectory model confirmed uniquely fast (120 hr) long‐range air‐mass transport form North Africa to Poland. This remarkable dust event was observed using lidar at the Aerosol, Clouds and Trace Gases Research InfraStructure site in Warsaw, Central Poland; the only site equipped with Raman‐Mie polarization water vapor lidar in East‐Central Europe. The excellent capabilities of PollyXT lidar allowed to obtain an impressive number of 31 full sets of aerosol optical properties profiles, which enabled study of dust properties evolution on a rare hourly scale. The analyses were completed with the separation of fine and coarse mode dust particles form non‐dust particles using the POlarization‐LIdar PHOtometer Networking algorithm. Huge amount of an exceptionally pure mineral dust from Sahara measured in the free troposphere was characterized by a gradually decreasing coarse dust fraction (76%–21%) with a peak of fine dust fraction (67%) and particle linear depolarization ratio (26%) in the middle of the event. Within the boundary layer, a local urban dust mixed with pollution was observed with fine mode dust particles dominating (44%) and lower particle linear depolarization ratio (7.4%). The influx of pure mineral dust has been unique to this geographical region and will therefore be a reference point for future research and comparative studies.
Published: 2021

12. Earlinet validation of CATS L2 product

Author: Proestakis Emmanouil, Amiridis Vassilis, Kottas Michael, Marinou Eleni, Binietoglou Ioannis, Ansmann Albert, Wandinger Ulla, Yorks John, Nowottnick Edward, Makhmudov Abduvosit, Papayannis Alexandros, Pietruczuk Aleksander, Gialitaki Anna, Apituley Arnoud, Muñoz-Porcar Constantino, Bortoli Daniele, Dionisi Davide, Althausen Dietrich, Mamali Dimitra, Balis Dimitris, Nicolae Doina, Tetoni Eleni, Luigi Liberti Gian, Baars Holger, Stachlewska Iwona S., Voudouri Kalliopi-Artemis, Mona Lucia, Mylonaki Maria, Rita Perrone Maria, João Costa Maria, Sicard Michael, Papagiannopoulos Nikolaos, Siomos Nikolaos, Burlizzi Pasquale, Engelmann Ronny, Abdullaev Sabur F., Hofer Julian, and Pappalardo Gelsomina
Subjects: Physics, QC1-999
Abstract: The Cloud-Aerosol Transport System (CATS) onboard the International Space Station (ISS), is a lidar system providing vertically resolved aerosol and cloud profiles since February 2015. In this study, the CATS aerosol product is validated against the aerosol profiles provided by the European Aerosol Research Lidar Network (EARLINET). This validation activity is based on collocated CATS-EARLINET measurements and the comparison of the particle backscatter coefficient at 1064nm.
Published: 2018
Full Text: View/download PDF

13. Reply on RC2

Author: Tetoni, Eleni, primary
Published: 2022
Full Text: View/download PDF

14. Reply on CC1

Author: Tetoni, Eleni, primary
Published: 2022
Full Text: View/download PDF

15. Deployment of the C-band radar Poldirad on Barbados during EUREC<sup>4</sup>A

Author: Hagen, Martin, primary, Ewald, Florian, additional, Groß, Silke, additional, Oswald, Lothar, additional, Farrell, David A., additional, Forde, Marvin, additional, Gutleben, Manuel, additional, Heumos, Johann, additional, Reimann, Jens, additional, Tetoni, Eleni, additional, Köcher, Gregor, additional, Marinou, Eleni, additional, Kiemle, Christoph, additional, Li, Qiang, additional, Chewitt-Lucas, Rebecca, additional, Daley, Alton, additional, Grant, Delando, additional, and Hall, Kashawn, additional
Published: 2021
Full Text: View/download PDF

16. Evaluation of convective cloud microphysics in numerical weather predictionmodel with dual-wavelength polarimetric radar observations

Author: Köcher, Gregor, primary, Ewald, Florian, additional, Hagen, Martin, additional, Knote, Christoph, additional, Tetoni, Eleni, additional, and Zinner, Tobias, additional
Published: 2021
Full Text: View/download PDF

17. Overview: Fusion of radar polarimetry and numerical atmospheric modelling towards an improved understanding of cloud and precipitation processes

Author: Trömel, Silke, primary, Simmer, Clemens, additional, Blahak, Ulrich, additional, Blanke, Armin, additional, Doktorowski, Sabine, additional, Ewald, Florian, additional, Frech, Michael, additional, Gergely, Mathias, additional, Hagen, Martin, additional, Janjic, Tijana, additional, Kalesse-Los, Heike, additional, Kneifel, Stefan, additional, Knote, Christoph, additional, Mendrok, Jana, additional, Moser, Manuel, additional, Köcher, Gregor, additional, Mühlbauer, Kai, additional, Myagkov, Alexander, additional, Pejcic, Velibor, additional, Seifert, Patric, additional, Shrestha, Prabhakar, additional, Teisseire, Audrey, additional, von Terzi, Leonie, additional, Tetoni, Eleni, additional, Vogl, Teresa, additional, Voigt, Christiane, additional, Zeng, Yuefei, additional, Zinner, Tobias, additional, and Quaas, Johannes, additional
Published: 2021
Full Text: View/download PDF

18. Supplementary material to "Retrievals of ice microphysics using dual-wavelength polarimetric radar observations during stratiform precipitation events"

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Hagen, Martin, additional, Köcher, Gregor, additional, Zinner, Tobias, additional, and Groß, Silke, additional
Published: 2021
Full Text: View/download PDF

19. Retrievals of ice microphysics using dual-wavelength polarimetric radar observations during stratiform precipitation events

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Hagen, Martin, additional, Köcher, Gregor, additional, Zinner, Tobias, additional, and Groß, Silke, additional
Published: 2021
Full Text: View/download PDF

20. Evaluation of convective cloud microphysics in numerical weather prediction model with dual-wavelength polarimetric radar observations: methods and examples

Author: Köcher, Gregor, primary, Zinner, Tobias, additional, Knote, Christoph, additional, Tetoni, Eleni, additional, Ewald, Florian, additional, and Hagen, Martin, additional
Published: 2021
Full Text: View/download PDF

21. EUREC<sup>4</sup>A

Author: Stevens, Bjorn, primary, Bony, Sandrine, additional, Farrell, David, additional, Ament, Felix, additional, Blyth, Alan, additional, Fairall, Christopher, additional, Karstensen, Johannes, additional, Quinn, Patricia K., additional, Speich, Sabrina, additional, Acquistapace, Claudia, additional, Aemisegger, Franziska, additional, Albright, Anna Lea, additional, Bellenger, Hugo, additional, Bodenschatz, Eberhard, additional, Caesar, Kathy-Ann, additional, Chewitt-Lucas, Rebecca, additional, de Boer, Gijs, additional, Delanoë, Julien, additional, Denby, Leif, additional, Ewald, Florian, additional, Fildier, Benjamin, additional, Forde, Marvin, additional, George, Geet, additional, Gross, Silke, additional, Hagen, Martin, additional, Hausold, Andrea, additional, Heywood, Karen J., additional, Hirsch, Lutz, additional, Jacob, Marek, additional, Jansen, Friedhelm, additional, Kinne, Stefan, additional, Klocke, Daniel, additional, Kölling, Tobias, additional, Konow, Heike, additional, Lothon, Marie, additional, Mohr, Wiebke, additional, Naumann, Ann Kristin, additional, Nuijens, Louise, additional, Olivier, Léa, additional, Pincus, Robert, additional, Pöhlker, Mira, additional, Reverdin, Gilles, additional, Roberts, Gregory, additional, Schnitt, Sabrina, additional, Schulz, Hauke, additional, Siebesma, A. Pier, additional, Stephan, Claudia Christine, additional, Sullivan, Peter, additional, Touzé-Peiffer, Ludovic, additional, Vial, Jessica, additional, Vogel, Raphaela, additional, Zuidema, Paquita, additional, Alexander, Nicola, additional, Alves, Lyndon, additional, Arixi, Sophian, additional, Asmath, Hamish, additional, Bagheri, Gholamhossein, additional, Baier, Katharina, additional, Bailey, Adriana, additional, Baranowski, Dariusz, additional, Baron, Alexandre, additional, Barrau, Sébastien, additional, Barrett, Paul A., additional, Batier, Frédéric, additional, Behrendt, Andreas, additional, Bendinger, Arne, additional, Beucher, Florent, additional, Bigorre, Sebastien, additional, Blades, Edmund, additional, Blossey, Peter, additional, Bock, Olivier, additional, Böing, Steven, additional, Bosser, Pierre, additional, Bourras, Denis, additional, Bouruet-Aubertot, Pascale, additional, Bower, Keith, additional, Branellec, Pierre, additional, Branger, Hubert, additional, Brennek, Michal, additional, Brewer, Alan, additional, Brilouet, Pierre-Etienne, additional, Brügmann, Björn, additional, Buehler, Stefan A., additional, Burke, Elmo, additional, Burton, Ralph, additional, Calmer, Radiance, additional, Canonici, Jean-Christophe, additional, Carton, Xavier, additional, Cato Jr., Gregory, additional, Charles, Jude Andre, additional, Chazette, Patrick, additional, Chen, Yanxu, additional, Chilinski, Michal T., additional, Choularton, Thomas, additional, Chuang, Patrick, additional, Clarke, Shamal, additional, Coe, Hugh, additional, Cornet, Céline, additional, Coutris, Pierre, additional, Couvreux, Fleur, additional, Crewell, Susanne, additional, Cronin, Timothy, additional, Cui, Zhiqiang, additional, Cuypers, Yannis, additional, Daley, Alton, additional, Damerell, Gillian M., additional, Dauhut, Thibaut, additional, Deneke, Hartwig, additional, Desbios, Jean-Philippe, additional, Dörner, Steffen, additional, Donner, Sebastian, additional, Douet, Vincent, additional, Drushka, Kyla, additional, Dütsch, Marina, additional, Ehrlich, André, additional, Emanuel, Kerry, additional, Emmanouilidis, Alexandros, additional, Etienne, Jean-Claude, additional, Etienne-Leblanc, Sheryl, additional, Faure, Ghislain, additional, Feingold, Graham, additional, Ferrero, Luca, additional, Fix, Andreas, additional, Flamant, Cyrille, additional, Flatau, Piotr Jacek, additional, Foltz, Gregory R., additional, Forster, Linda, additional, Furtuna, Iulian, additional, Gadian, Alan, additional, Galewsky, Joseph, additional, Gallagher, Martin, additional, Gallimore, Peter, additional, Gaston, Cassandra, additional, Gentemann, Chelle, additional, Geyskens, Nicolas, additional, Giez, Andreas, additional, Gollop, John, additional, Gouirand, Isabelle, additional, Gourbeyre, Christophe, additional, de Graaf, Dörte, additional, de Groot, Geiske E., additional, Grosz, Robert, additional, Güttler, Johannes, additional, Gutleben, Manuel, additional, Hall, Kashawn, additional, Harris, George, additional, Helfer, Kevin C., additional, Henze, Dean, additional, Herbert, Calvert, additional, Holanda, Bruna, additional, Ibanez-Landeta, Antonio, additional, Intrieri, Janet, additional, Iyer, Suneil, additional, Julien, Fabrice, additional, Kalesse, Heike, additional, Kazil, Jan, additional, Kellman, Alexander, additional, Kidane, Abiel T., additional, Kirchner, Ulrike, additional, Klingebiel, Marcus, additional, Körner, Mareike, additional, Kremper, Leslie Ann, additional, Kretzschmar, Jan, additional, Krüger, Ovid, additional, Kumala, Wojciech, additional, Kurz, Armin, additional, L'Hégaret, Pierre, additional, Labaste, Matthieu, additional, Lachlan-Cope, Tom, additional, Laing, Arlene, additional, Landschützer, Peter, additional, Lang, Theresa, additional, Lange, Diego, additional, Lange, Ingo, additional, Laplace, Clément, additional, Lavik, Gauke, additional, Laxenaire, Rémi, additional, Le Bihan, Caroline, additional, Leandro, Mason, additional, Lefevre, Nathalie, additional, Lena, Marius, additional, Lenschow, Donald, additional, Li, Qiang, additional, Lloyd, Gary, additional, Los, Sebastian, additional, Losi, Niccolò, additional, Lovell, Oscar, additional, Luneau, Christopher, additional, Makuch, Przemyslaw, additional, Malinowski, Szymon, additional, Manta, Gaston, additional, Marinou, Eleni, additional, Marsden, Nicholas, additional, Masson, Sebastien, additional, Maury, Nicolas, additional, Mayer, Bernhard, additional, Mayers-Als, Margarette, additional, Mazel, Christophe, additional, McGeary, Wayne, additional, McWilliams, James C., additional, Mech, Mario, additional, Mehlmann, Melina, additional, Meroni, Agostino Niyonkuru, additional, Mieslinger, Theresa, additional, Minikin, Andreas, additional, Minnett, Peter, additional, Möller, Gregor, additional, Morfa Avalos, Yanmichel, additional, Muller, Caroline, additional, Musat, Ionela, additional, Napoli, Anna, additional, Neuberger, Almuth, additional, Noisel, Christophe, additional, Noone, David, additional, Nordsiek, Freja, additional, Nowak, Jakub L., additional, Oswald, Lothar, additional, Parker, Douglas J., additional, Peck, Carolyn, additional, Person, Renaud, additional, Philippi, Miriam, additional, Plueddemann, Albert, additional, Pöhlker, Christopher, additional, Pörtge, Veronika, additional, Pöschl, Ulrich, additional, Pologne, Lawrence, additional, Posyniak, Michał, additional, Prange, Marc, additional, Quiñones Meléndez, Estefanía, additional, Radtke, Jule, additional, Ramage, Karim, additional, Reimann, Jens, additional, Renault, Lionel, additional, Reus, Klaus, additional, Reyes, Ashford, additional, Ribbe, Joachim, additional, Ringel, Maximilian, additional, Ritschel, Markus, additional, Rocha, Cesar B., additional, Rochetin, Nicolas, additional, Röttenbacher, Johannes, additional, Rollo, Callum, additional, Royer, Haley, additional, Sadoulet, Pauline, additional, Saffin, Leo, additional, Sandiford, Sanola, additional, Sandu, Irina, additional, Schäfer, Michael, additional, Schemann, Vera, additional, Schirmacher, Imke, additional, Schlenczek, Oliver, additional, Schmidt, Jerome, additional, Schröder, Marcel, additional, Schwarzenboeck, Alfons, additional, Sealy, Andrea, additional, Senff, Christoph J., additional, Serikov, Ilya, additional, Shohan, Samkeyat, additional, Siddle, Elizabeth, additional, Smirnov, Alexander, additional, Späth, Florian, additional, Spooner, Branden, additional, Stolla, M. Katharina, additional, Szkółka, Wojciech, additional, de Szoeke, Simon P., additional, Tarot, Stéphane, additional, Tetoni, Eleni, additional, Thompson, Elizabeth, additional, Thomson, Jim, additional, Tomassini, Lorenzo, additional, Totems, Julien, additional, Ubele, Alma Anna, additional, Villiger, Leonie, additional, von Arx, Jan, additional, Wagner, Thomas, additional, Walther, Andi, additional, Webber, Ben, additional, Wendisch, Manfred, additional, Whitehall, Shanice, additional, Wiltshire, Anton, additional, Wing, Allison A., additional, Wirth, Martin, additional, Wiskandt, Jonathan, additional, Wolf, Kevin, additional, Worbes, Ludwig, additional, Wright, Ethan, additional, Wulfmeyer, Volker, additional, Young, Shanea, additional, Zhang, Chidong, additional, Zhang, Dongxiao, additional, Ziemen, Florian, additional, Zinner, Tobias, additional, and Zöger, Martin, additional
Published: 2021
Full Text: View/download PDF

22. EUREC4A

Author: Stevens, Bjorn, Bony, Sandrine, Farrell, David, Ament, Felix, Blyth, Alan, Fairall, Christopher, Karstensen, Johannes, Quinn, Patricia K., Speich, Sabrina, Acquistapace, Claudia, Aemisegger, Franziska, Albright, Anna Lea, Bellenger, Hugo, Bodenschatz, Eberhard, Caesar, Kathy-ann, Chewitt-lucas, Rebecca, De Boer, Gijs, Delanoe, Julien, Denby, Leif, Ewald, Florian, Fildier, Benjamin, Forde, Marvin, George, Geet, Gross, Silke, Hagen, Martin, Hausold, Andrea, Heywood, Karen J., Hirsch, Lutz, Jacob, Marek, Jansen, Friedhelm, Kinne, Stefan, Klocke, Daniel, Kolling, Tobias, Konow, Heike, Lothon, Marie, Mohr, Wiebke, Naumann, Ann Kristin, Nuijens, Louise, Olivier, Lea, Pincus, Robert, Pohlker, Mira, Reverdin, Gilles, Roberts, Gregory, Schnitt, Sabrina, Schulz, Hauke, Siebesma, A. Pier, Stephan, Claudia Christine, Sullivan, Peter, Touze-peiffer, Ludovic, Vial, Jessica, Vogel, Raphaela, Zuidema, Paquita, Alexander, Nicola, Alves, Lyndon, Arixi, Sophian, Asmath, Hamish, Bagheri, Gholamhossein, Baier, Katharina, Bailey, Adriana, Baranowski, Dariusz, Baron, Alexandre, Barrau, Sebastien, Barrett, Paul A., Batier, Frederic, Behrendt, Andreas, Bendinger, Arne, Beucher, Florent, Bigorre, Sebastien, Blades, Edmund, Blossey, Peter, Bock, Olivier, Boing, Steven, Bosser, Pierre, Bourras, Denis, Bouruet-aubertot, Pascale, Bower, Keith, Branellec, Pierre, Branger, Hubert, Brennek, Michal, Brewer, Alan, Brilouet, Pierre Etienne, Brugmann, Bjorn, Buehler, Stefan A., Burke, Elmo, Burton, Ralph, Calmer, Radiance, Canonici, Jean-christophe, Carton, Xavier, Cato, Gregory, Jr., Charles, Jude Andre, Chazette, Patrick, Chen, Yanxu, Chilinski, Michal T., Choularton, Thomas, Chuang, Patrick, Clarke, Shamal, Coe, Hugh, Cornet, Celine, Coutris, Pierre, Couvreux, Fleur, Crewell, Susanne, Cronin, Timothy, Cui, Zhiqiang, Cuypers, Yannis, Daley, Alton, Damerell, Gillian M., Dauhut, Thibaut, Deneke, Hartwig, Desbios, Jean-philippe, Dorner, Steffen, Donner, Sebastian, Douet, Vincent, Drushka, Kyla, Dutsch, Marina, Ehrlich, Andre, Emanuel, Kerry, Emmanouilidis, Alexandros, Etienne, Jean-claude, Etienne-leblanc, Sheryl, Faure, Ghislain, Feingold, Graham, Ferrero, Luca, Fix, Andreas, Flamant, Cyrille, Flatau, Piotr Jacek, Foltz, Gregory R., Forster, Linda, Furtuna, Iulian, Gadian, Alan, Galewsky, Joseph, Gallagher, Martin, Gallimore, Peter, Gaston, Cassandra, Gentemann, Chelle, Geyskens, Nicolas, Giez, Andreas, Gollop, John, Gouirand, Isabelle, Gourbeyre, Christophe, De Graaf, Dorte, De Groot, Geiske E., Grosz, Robert, Guttler, Johannes, Gutleben, Manuel, Hall, Kashawn, Harris, George, Helfer, Kevin C., Henze, Dean, Herbert, Calvert, Holanda, Bruna, Ibanez-landeta, Antonio, Intrieri, Janet, Iyer, Suneil, Julien, Fabrice, Kalesse, Heike, Kazil, Jan, Kellman, Alexander, Kidane, Abiel T., Kirchner, Ulrike, Klingebiel, Marcus, Korner, Mareike, Kremper, Leslie Ann, Kretzschmar, Jan, Kruger, Ovid, Kumala, Wojciech, Kurz, Armin, L'Hegaret, Pierre, Labaste, Matthieu, Lachlan-cope, Tom, Laing, Arlene, Landschutzer, Peter, Lang, Theresa, Lange, Diego, Lange, Ingo, Laplace, Clement, Lavik, Gauke, Laxenaire, Remi, Le Bihan, Caroline, Leandro, Mason, Lefevre, Nathalie, Lena, Marius, Lenschow, Donald, Li, Qiang, Lloyd, Gary, Los, Sebastian, Losi, Niccolo, Lovell, Oscar, Luneau, Christopher, Makuch, Przemyslaw, Malinowski, Szymon, Manta, Gaston, Marinou, Eleni, Marsden, Nicholas, Masson, Sebastien, Maury, Nicolas, Mayer, Bernhard, Mayers-als, Margarette, Mazel, Christophe, Mcgeary, Wayne, Mcwilliams, James C., Mech, Mario, Mehlmann, Melina, Meroni, Agostino Niyonkuru, Mieslinger, Theresa, Minikin, Andreas, Minnett, Peter, Moller, Gregor, Avalos, Yanmichel Morfa, Muller, Caroline, Musat, Ionela, Napoli, Anna, Neuberger, Almuth, Noisel, Christophe, Noone, David, Nordsiek, Freja, Nowak, Jakub L., Oswald, Lothar, Parker, Douglas J., Peck, Carolyn, Person, Renaud, Philippi, Miriam, Plueddemann, Albert, Pohlker, Christopher, Portge, Veronika, Poschl, Ulrich, Pologne, Lawrence, Posyniak, Michal, Prange, Marc, Melendez, Estefania Quinones, Radtke, Jule, Ramage, Karim, Reimann, Jens, Renault, Lionel, Reus, Klaus, Reyes, Ashford, Ribbe, Joachim, Ringel, Maximilian, Ritschel, Markus, Rocha, Cesar B., Rochetin, Nicolas, Rottenbacher, Johannes, Rollo, Callum, Royer, Haley, Sadoulet, Pauline, Saffin, Leo, Sandiford, Sanola, Sandu, Irina, Schafer, Michael, Schemann, Vera, Schirmacher, Imke, Schlenczek, Oliver, Schmidt, Jerome, Schroder, Marcel, Schwarzenboeck, Alfons, Sealy, Andrea, Senff, Christoph J., Serikov, Ilya, Shohan, Samkeyat, Siddle, Elizabeth, Smirnov, Alexander, Spath, Florian, Spooner, Branden, Stolla, M. Katharina, Szkolka, Wojciech, De Szoeke, Simon P., Tarot, Stephane, Tetoni, Eleni, Thompson, Elizabeth, Thomson, Jim, Tomassini, Lorenzo, Totems, Julien, Ubele, Alma Anna, Villiger, Leonie, Von Arx, Jan, Wagner, Thomas, Walther, Andi, Webber, Ben, Wendisch, Manfred, Whitehall, Shanice, Wiltshire, Anton, Wing, Allison A., Wirth, Martin, Wiskandt, Jonathan, Wolf, Kevin, Worbes, Ludwig, Wright, Ethan, Wulfmeyer, Volker, Young, Shanea, Zhang, Chidong, Zhang, Dongxiao, Ziemen, Florian, Zinner, Tobias, Zoger, Martin, Stevens, Bjorn, Bony, Sandrine, Farrell, David, Ament, Felix, Blyth, Alan, Fairall, Christopher, Karstensen, Johannes, Quinn, Patricia K., Speich, Sabrina, Acquistapace, Claudia, Aemisegger, Franziska, Albright, Anna Lea, Bellenger, Hugo, Bodenschatz, Eberhard, Caesar, Kathy-ann, Chewitt-lucas, Rebecca, De Boer, Gijs, Delanoe, Julien, Denby, Leif, Ewald, Florian, Fildier, Benjamin, Forde, Marvin, George, Geet, Gross, Silke, Hagen, Martin, Hausold, Andrea, Heywood, Karen J., Hirsch, Lutz, Jacob, Marek, Jansen, Friedhelm, Kinne, Stefan, Klocke, Daniel, Kolling, Tobias, Konow, Heike, Lothon, Marie, Mohr, Wiebke, Naumann, Ann Kristin, Nuijens, Louise, Olivier, Lea, Pincus, Robert, Pohlker, Mira, Reverdin, Gilles, Roberts, Gregory, Schnitt, Sabrina, Schulz, Hauke, Siebesma, A. Pier, Stephan, Claudia Christine, Sullivan, Peter, Touze-peiffer, Ludovic, Vial, Jessica, Vogel, Raphaela, Zuidema, Paquita, Alexander, Nicola, Alves, Lyndon, Arixi, Sophian, Asmath, Hamish, Bagheri, Gholamhossein, Baier, Katharina, Bailey, Adriana, Baranowski, Dariusz, Baron, Alexandre, Barrau, Sebastien, Barrett, Paul A., Batier, Frederic, Behrendt, Andreas, Bendinger, Arne, Beucher, Florent, Bigorre, Sebastien, Blades, Edmund, Blossey, Peter, Bock, Olivier, Boing, Steven, Bosser, Pierre, Bourras, Denis, Bouruet-aubertot, Pascale, Bower, Keith, Branellec, Pierre, Branger, Hubert, Brennek, Michal, Brewer, Alan, Brilouet, Pierre Etienne, Brugmann, Bjorn, Buehler, Stefan A., Burke, Elmo, Burton, Ralph, Calmer, Radiance, Canonici, Jean-christophe, Carton, Xavier, Cato, Gregory, Jr., Charles, Jude Andre, Chazette, Patrick, Chen, Yanxu, Chilinski, Michal T., Choularton, Thomas, Chuang, Patrick, Clarke, Shamal, Coe, Hugh, Cornet, Celine, Coutris, Pierre, Couvreux, Fleur, Crewell, Susanne, Cronin, Timothy, Cui, Zhiqiang, Cuypers, Yannis, Daley, Alton, Damerell, Gillian M., Dauhut, Thibaut, Deneke, Hartwig, Desbios, Jean-philippe, Dorner, Steffen, Donner, Sebastian, Douet, Vincent, Drushka, Kyla, Dutsch, Marina, Ehrlich, Andre, Emanuel, Kerry, Emmanouilidis, Alexandros, Etienne, Jean-claude, Etienne-leblanc, Sheryl, Faure, Ghislain, Feingold, Graham, Ferrero, Luca, Fix, Andreas, Flamant, Cyrille, Flatau, Piotr Jacek, Foltz, Gregory R., Forster, Linda, Furtuna, Iulian, Gadian, Alan, Galewsky, Joseph, Gallagher, Martin, Gallimore, Peter, Gaston, Cassandra, Gentemann, Chelle, Geyskens, Nicolas, Giez, Andreas, Gollop, John, Gouirand, Isabelle, Gourbeyre, Christophe, De Graaf, Dorte, De Groot, Geiske E., Grosz, Robert, Guttler, Johannes, Gutleben, Manuel, Hall, Kashawn, Harris, George, Helfer, Kevin C., Henze, Dean, Herbert, Calvert, Holanda, Bruna, Ibanez-landeta, Antonio, Intrieri, Janet, Iyer, Suneil, Julien, Fabrice, Kalesse, Heike, Kazil, Jan, Kellman, Alexander, Kidane, Abiel T., Kirchner, Ulrike, Klingebiel, Marcus, Korner, Mareike, Kremper, Leslie Ann, Kretzschmar, Jan, Kruger, Ovid, Kumala, Wojciech, Kurz, Armin, L'Hegaret, Pierre, Labaste, Matthieu, Lachlan-cope, Tom, Laing, Arlene, Landschutzer, Peter, Lang, Theresa, Lange, Diego, Lange, Ingo, Laplace, Clement, Lavik, Gauke, Laxenaire, Remi, Le Bihan, Caroline, Leandro, Mason, Lefevre, Nathalie, Lena, Marius, Lenschow, Donald, Li, Qiang, Lloyd, Gary, Los, Sebastian, Losi, Niccolo, Lovell, Oscar, Luneau, Christopher, Makuch, Przemyslaw, Malinowski, Szymon, Manta, Gaston, Marinou, Eleni, Marsden, Nicholas, Masson, Sebastien, Maury, Nicolas, Mayer, Bernhard, Mayers-als, Margarette, Mazel, Christophe, Mcgeary, Wayne, Mcwilliams, James C., Mech, Mario, Mehlmann, Melina, Meroni, Agostino Niyonkuru, Mieslinger, Theresa, Minikin, Andreas, Minnett, Peter, Moller, Gregor, Avalos, Yanmichel Morfa, Muller, Caroline, Musat, Ionela, Napoli, Anna, Neuberger, Almuth, Noisel, Christophe, Noone, David, Nordsiek, Freja, Nowak, Jakub L., Oswald, Lothar, Parker, Douglas J., Peck, Carolyn, Person, Renaud, Philippi, Miriam, Plueddemann, Albert, Pohlker, Christopher, Portge, Veronika, Poschl, Ulrich, Pologne, Lawrence, Posyniak, Michal, Prange, Marc, Melendez, Estefania Quinones, Radtke, Jule, Ramage, Karim, Reimann, Jens, Renault, Lionel, Reus, Klaus, Reyes, Ashford, Ribbe, Joachim, Ringel, Maximilian, Ritschel, Markus, Rocha, Cesar B., Rochetin, Nicolas, Rottenbacher, Johannes, Rollo, Callum, Royer, Haley, Sadoulet, Pauline, Saffin, Leo, Sandiford, Sanola, Sandu, Irina, Schafer, Michael, Schemann, Vera, Schirmacher, Imke, Schlenczek, Oliver, Schmidt, Jerome, Schroder, Marcel, Schwarzenboeck, Alfons, Sealy, Andrea, Senff, Christoph J., Serikov, Ilya, Shohan, Samkeyat, Siddle, Elizabeth, Smirnov, Alexander, Spath, Florian, Spooner, Branden, Stolla, M. Katharina, Szkolka, Wojciech, De Szoeke, Simon P., Tarot, Stephane, Tetoni, Eleni, Thompson, Elizabeth, Thomson, Jim, Tomassini, Lorenzo, Totems, Julien, Ubele, Alma Anna, Villiger, Leonie, Von Arx, Jan, Wagner, Thomas, Walther, Andi, Webber, Ben, Wendisch, Manfred, Whitehall, Shanice, Wiltshire, Anton, Wing, Allison A., Wirth, Martin, Wiskandt, Jonathan, Wolf, Kevin, Worbes, Ludwig, Wright, Ethan, Wulfmeyer, Volker, Young, Shanea, Zhang, Chidong, Zhang, Dongxiao, Ziemen, Florian, Zinner, Tobias, and Zoger, Martin
Abstract: The science guiding the \EURECA campaign and its measurements are presented. \EURECA comprised roughly five weeks of measurements in the downstream winter trades of the North Atlantic — eastward and south-eastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, \EURECA marked a turning point in our ability to observationally study factors influencing clouds in the trades, how they will respond to warming, and their link to other components of the earth system, such as upper-ocean processes or, or the life-cycle of particulate matter. This characterization was made possible by thousands (2500) of sondes distributed to measure circulations on meso (200 km) and larger (500 km) scales, roughly four hundred hours of flight time by four heavily instrumented research aircraft, four global-ocean class research vessels, an advanced ground-based cloud observatory, a flotilla of autonomous or tethered measurement devices operating in the upper ocean (nearly 10000 profiles), lower atmosphere (continuous profiling), and along the air-sea interface, a network of water stable isotopologue measurements, complemented by special programmes of satellite remote sensing and modeling with a new generation of weather/climate models. In addition to providing an outline of the novel measurements and their composition into a unified and coordinated campaign, the six distinct scientific facets that \EURECA explored — from Brazil Ring Current Eddies to turbulence induced clustering of cloud droplets and its influence on warm-rain formation — are presented along with an overview \EURECA’s outreach activities, environmental impact, and guidelines for scientific practice.
Published: 2021
Full Text: View/download PDF

23. Overview: Fusion of radar polarimetry and numerical atmospheric modelling towards an improved understanding of cloud and precipitation processes

Author: Troemel, Silke, Simmer, Clemens, Blahak, Ulrich, Blanke, Armin, Doktorowski, Sabine, Ewald, Florian, Frech, Michael, Gergely, Mathias, Hagen, Martin, Janjic, Tijana, Kalesse-Los, Heike, Kneifel, Stefan, Knote, Christoph, Mendrok, Jana, Moser, Manuel, Koecher, Gregor, Muehlbauer, Kai, Myagkov, Alexander, Pejcic, Velibor, Seifert, Patric, Shrestha, Prabhakar, Teisseire, Audrey, von Terzi, Leonie, Tetoni, Eleni, Vogl, Teresa, Voigt, Christiane, Zeng, Yuefei, Zinner, Tobias, Quaas, Johannes, Troemel, Silke, Simmer, Clemens, Blahak, Ulrich, Blanke, Armin, Doktorowski, Sabine, Ewald, Florian, Frech, Michael, Gergely, Mathias, Hagen, Martin, Janjic, Tijana, Kalesse-Los, Heike, Kneifel, Stefan, Knote, Christoph, Mendrok, Jana, Moser, Manuel, Koecher, Gregor, Muehlbauer, Kai, Myagkov, Alexander, Pejcic, Velibor, Seifert, Patric, Shrestha, Prabhakar, Teisseire, Audrey, von Terzi, Leonie, Tetoni, Eleni, Vogl, Teresa, Voigt, Christiane, Zeng, Yuefei, Zinner, Tobias, and Quaas, Johannes
Abstract: Cloud and precipitation processes are still a main source of uncertainties in numerical weather prediction and climate change projections. The Priority Programme Polarimetric Radar Observations meet Atmospheric Modelling (PROM), funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG), is guided by the hypothesis that many uncertainties relate to the lack of observations suitable to challenge the representation of cloud and precipitation processes in atmospheric models. Such observations can, however, at present be provided by the recently installed dual-polarization C-band weather radar network of the German national meteorological service in synergy with cloud radars and other instruments at German supersites and similar national networks increasingly available worldwide. While polarimetric radars potentially provide valuable in-cloud information on hydrometeor type, quantity, and microphysical cloud and precipitation processes, and atmospheric models employ increasingly complex microphysical modules, considerable knowledge gaps still exist in the interpretation of the observations and in the optimal microphysics model process formulations. PROM is a coordinated interdisciplinary effort to increase the use of polarimetric radar observations in data assimilation, which requires a thorough evaluation and improvement of parameterizations of moist processes in atmospheric models. As an overview article of the inter-journal special issue Fusion of radar polarimetry and numerical atmospheric modelling towards an improved understanding of cloud and precipitation processes, this article outlines the knowledge achieved in PROM during the past 2 years and gives perspectives for the next 4 years.
Published: 2021

24. Advantages and limitations on combining radar dual - wavelength and polarimetric observations for ice microphysics retrievals

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Möller, Gregor, additional, Hagen, Martin, additional, Zinner, Tobias, additional, Mayer, Bernhard, additional, Knote, Christoph, additional, and Gross, Silke, additional
Published: 2021
Full Text: View/download PDF

25. The Life-Cycle of Cloud and Precipitation Microphysics in Radar Observation and Numerical Model

Author: Möller, Gregor, primary, Ewald, Florian, additional, Groß, Silke, additional, Hagen, Martin, additional, Knote, Christoph, additional, Mayer, Bernhard, additional, Tetoni, Eleni, additional, and Zinner, Tobias, additional
Published: 2021
Full Text: View/download PDF

26. The Potential of GRASP/GARRLiC Retrievals for Dust Aerosol Model Evaluation: Case Study during the PreTECT Campaign

Author: Konsta, Dimitra, primary, Tsekeri, Alexandra, additional, Solomos, Stavros, additional, Siomos, Nikolaos, additional, Gialitaki, Anna, additional, Tetoni, Eleni, additional, Lopatin, Anton, additional, Goloub, Philippe, additional, Dubovik, Oleg, additional, Amiridis, Vassilis, additional, and Nastos, Panagiotis, additional
Published: 2021
Full Text: View/download PDF

27. EUREC4A

Author: Stevens, Bjorn, primary, Bony, Sandrine, additional, Farrell, David, additional, Ament, Felix, additional, Blyth, Alan M., additional, Fairall, Christopher W., additional, Karstensen, Johannes, additional, Quinn, Patricia K., additional, Speich, Sabrina, additional, Acquistapace, Claudia, additional, Aemisegger, Franziska, additional, Albright, Anna Lea, additional, Bellenger, Hugo, additional, Bodenschatz, Eberhard, additional, Caesar, Kathy-Ann, additional, Chewitt-Lucas, Rebecca, additional, de Boer, Gijs, additional, Delanoë, Julien, additional, Denby, Leif Christopher, additional, Ewald, Florian, additional, Fildier, Benjamin, additional, Forde, Marvin, additional, George, Geet, additional, Gross, Silke, additional, Hagen, Martin, additional, Hausold, Andrea, additional, Heywood, Karen J., additional, Hirsch, Lutz, additional, Jacob, Marek, additional, Jansen, Friedhelm, additional, Kinne, Stefan, additional, Klocke, Daniel, additional, Kölling, Tobias, additional, Konow, Heike, additional, Lothon, Marie, additional, Mohr, Wiebke, additional, Naumann, Ann Kristin, additional, Nuijens, Louise, additional, Olivier, Léa, additional, Pincus, Robert, additional, Pöhlker, Mira L., additional, Reverdin, Gilles, additional, Roberts, Gregory, additional, Schnitt, Sabrina, additional, Schulz, Hauke, additional, Siebesma, Pier, additional, Stephan, Claudia Christine, additional, Sullivan, Peter P, additional, Touzé-Peiffer, Ludovic, additional, Vial, Jessica, additional, Vogel, Raphaela, additional, Zuidema, Paquita, additional, Alexander, Nicola, additional, Alves, Lyndon, additional, Arixi, Sophian, additional, Asmath, Hamish, additional, Bagheri, Gholamhossein, additional, Baier, Katharina, additional, Bailey, Adriana, additional, Baranowski, Dariusz B., additional, Baron, Alexandre, additional, Barrau, Sébastien, additional, Barrett, Paul Alan, additional, Batier, Frédéric, additional, Behrendt, Andreas, additional, Bendinger, Arne, additional, Beucher, Florent, additional, Bigorre, Sebastien, additional, Blades, Edmund, additional, Bock, Olivier, additional, Boeing, Steven J, additional, Bosser, Pierre, additional, Bourras, Denis, additional, Bouruet-Aubertot, Pascale, additional, Bower, Keith, additional, Branellec, Pierre, additional, Branger, Hubert, additional, Brennek, Michal, additional, Brewer, Alan, additional, Brilouet, Pierre-Etienne, additional, Brügmann, Björn, additional, Buehler, Stefan Alexander, additional, Burke, Elmo, additional, Burton, Ralph, additional, Calmer, Radiance, additional, Canonici, Jean-Christophe, additional, Carton, Xavier J., additional, Cato, Gregory, additional, Charles, Jude Andre, additional, Chazette, Patrick, additional, Chen, Yanxu, additional, Chiliński, Michał T, additional, Choularton, Tom, additional, Chuang, Patrick Y., additional, Clarke, Shamal, additional, Coe, Hugh, additional, Cornet, Céline, additional, Coutris, Pierre, additional, Couvreux, Fleur, additional, Crewell, Susanne, additional, Cronin, Timothy Wallace, additional, Cui, Zhiqiang, additional, Cuypers, Yannis, additional, Daley, Alton, additional, Damerell, Gillian Mary, additional, Dauhut, Thibaut, additional, Deneke, Hartwig M, additional, Desbios, Jean-Philippe, additional, Dörner, Steffen, additional, Donner, Sebastian, additional, Douet, Vincent, additional, Drushka, Kyla, additional, Dütsch, Marina, additional, Ehrlich, André, additional, Emanual, Kerry, additional, Emmanouilidis, Alexandros, additional, Etienne, Jean-Claude, additional, Etienne-Leblanc, Sheryl, additional, Faure, Ghislain, additional, Feingold, Graham, additional, Ferrero, Luca, additional, Fix, Andreas, additional, Flamant, Cyrille, additional, Flatau, Piotr J., additional, Foltz, Gregory R., additional, Forster, Linda, additional, Furtuna, Iulian, additional, Gadian, Alan, additional, Galewsky, Joseph, additional, Gallagher, Martin, additional, Gallimore, Peter, additional, Gaston, Cassandra J., additional, Gentemann, Chelle, additional, Geyskens, Nicolas, additional, Giez, Andreas, additional, Gollop, John, additional, Gouirand, Isabelle, additional, Gourbeyre, Christophe, additional, de Graaf, Dörte, additional, de Groot, Geiske E., additional, Grosz, Robert, additional, Güttler, Johannes, additional, Gutleben, Manuel, additional, Hall, Kashawn, additional, Harris, George, additional, Helfer, Kevin Christopher, additional, Henze, Dean, additional, Herbert, Calvert, additional, Holanda, Bruna, additional, Ibanez-Landeta, Antonio, additional, Intrieri, Janet M., additional, Iyer, Suneil, additional, Julien, Fabrice, additional, Kalesse, Heike, additional, Kazil, Jan, additional, Kellman, Alexander, additional, Kidane, Abiel T., additional, Kirchner, Ulrike, additional, Klingebiel, Marcus, additional, Körner, Mareike, additional, Kremper, Leslie Ann, additional, Kretzschmar, Jan, additional, Krüger, Ovid, additional, Kumala, Wojciech, additional, Kurz, Armin, additional, L'Hégaret, Pierre, additional, Labaste, Matthieu, additional, Lachlan-Cope, Tom A., additional, Laing, Arlene, additional, Landschützer, Peter, additional, Lang, Theresa, additional, Lange Vega, Diego, additional, Lange, Ingo, additional, Laplace, Clément, additional, Lavik, Gaute, additional, LAXENAIRE, Rémi, additional, Le Bihan, Caroline, additional, Leandro, Mason, additional, Lefèvre, Nathalie, additional, Lena, Marius, additional, Leschow, Donald, additional, Li, Qiang, additional, Lloyd, Gary, additional, Los, Sebastian, additional, Losi, Niccolò, additional, Lovell, Oscar, additional, Luneau, Christopher, additional, Makuch, Przemysław, additional, Malinowski, Szymon P, additional, Manta, Gaston, additional, Marinou, Eleni, additional, Marsden, Nicholas, additional, Masson, Sebastien, additional, Maury, Nicolas, additional, Mayer, Bernhard, additional, Mayers-Als, Margarette, additional, Mazel, Christophe, additional, McGeary, Wayne, additional, McWilliams, James C., additional, Mech, Mario, additional, Mehlmann, Melina, additional, Meroni, Agostino Niyonkuru, additional, Mieslinger, Theresa, additional, Minikin, Andreas, additional, Minnett, Peter, additional, Möller, Gregor, additional, Morfa Avalos, Yanmichel, additional, Muller, Caroline, additional, Musat, Ionela, additional, Napoli, Anna, additional, Neuberger, Almuth, additional, Noisel, Christophe, additional, Noone, David C, additional, Nordsiek, Freja, additional, Nowak, Jakub L, additional, Oswald, Lothar, additional, Parker, Douglas J., additional, Peck, Carolyn, additional, Person, Renaud, additional, Philippi, Miriam, additional, Plueddemann, Albert J., additional, Pöhlker, Christopher, additional, Pörtge, Veronika, additional, Pöschl, Ulrich, additional, Pologne, Lawrence, additional, Posyniak, Michal, additional, Prange, Marc, additional, Quiñones Meléndez, Estefanía, additional, Radtke, Jule, additional, Ramage, Karim, additional, Reimann, Jens, additional, Renault, Lionel, additional, Reus, Klaus, additional, Reyes, Ashford, additional, Ribbe, Joachim, additional, Ringel, Maximilian, additional, Ritschel, Markus, additional, Rocha, Cesar Barbedo, additional, Rochetin, Nicolas, additional, Röttenbacher, Johannes, additional, Rollo, Callum, additional, Royer, Haley, additional, Sadoulet, Pauline, additional, Saffin, Leo, additional, Sandiford, Sanola, additional, Sandu, Irina, additional, Schäfer, Michael, additional, Schemann, Vera, additional, Schirmacher, Imke, additional, Schlenczek, Oliver, additional, Schmidt, Jerome, additional, Schröder, Marcel, additional, Schwarzenboeck, Alfons, additional, Sealy, Andrea, additional, Senff, Christoph J, additional, Serikov, Ilya, additional, Shohan, Samkeyat, additional, Siddle, Elizabeth, additional, Smirnov, Alexander, additional, Späth, Florian, additional, Spooner, Branden, additional, Stolla, M. Katharina, additional, Szkółka, Wojciech, additional, de Szoeke, Simon P., additional, Tarot, Stéphane, additional, Tetoni, Eleni, additional, Thompson, Elizabeth J, additional, Thomson, Jim, additional, Tomassini, Lorenzo, additional, Totems, Julien, additional, Ubele, Alma Anna, additional, Villiger, Leonie, additional, von Arx, Jan, additional, Wagner, Thomas, additional, Walther, Andi, additional, Webber, Benjamin G. M., additional, Wendisch, Manfred, additional, Whitehall, Shanice, additional, Wiltshire, Anton, additional, Wing, Allison A., additional, Wirth, Martin, additional, Wiskandt, Jonathan, additional, Wolf, Kevin, additional, Worbes, Ludwig, additional, Wright, Ethan, additional, Wulfmeyer, Volker, additional, Young, Shanea, additional, Zhang, Chidong, additional, Zhang, Dongxiao, additional, Ziemen, Florian, additional, Zinner, Tobias, additional, and Zöger, Martin, additional
Published: 2020
Full Text: View/download PDF

28. Characterizing precipitation in convective cloud regimes in the trades with the polarimetric C-band radar POLDIRAD

Author: Hagen, Martin, primary, Ewald, Florian, additional, Groß, Silke, additional, Li, Qiang, additional, Oswald, Lothar, additional, and Tetoni, Eleni, additional
Published: 2020
Full Text: View/download PDF

29. Investigating the contribution of polarimetry in retrieving ice microphysical properties using Dual-Wavelength radar observations

Author: Tetoni, Eleni, primary, Ewald, Florian, additional, Möller, Gregor, additional, Hagen, Martin, additional, Zinner, Tobias, additional, Knote, Christoph, additional, Mayer, Bernhard, additional, Li, Qiang, additional, and Groß, Silke, additional
Published: 2020
Full Text: View/download PDF

30. Cloud vertical structure studied with synergetic measurements of Radiosonde, ceilometer and Ka-band radar in Munich

Author: Li, Qiang, primary, Ewald, Florian, additional, Groß, Silke, additional, Hagen, Martin, additional, Tetoni, Eleni, additional, and Mayer, Bernhard, additional
Published: 2020
Full Text: View/download PDF

31. Retrievals of ice microphysics using dual- wavelength polarimetric radar observations during stratiform precipitation events.

Author: Tetoni, Eleni, Ewald, Florian, Hagen, Martin, Köcher, Gregor, Zinner, Tobias, and Groß, Silke
Subjects: *ICE clouds, *MICROPHYSICS, *RADAR, *RAYLEIGH scattering, *RADAR meteorology, *PARTICLE size distribution
Abstract: Ice growth processes within clouds affect the type as well as the amount of precipitation. Hence, the importance of an accurate representation of ice microphysics in numerical weather and numerical climate models has been confirmed by several studies. To better constrain ice processes in models, we need to study ice cloud regions before and during monitored precipitation events. For this purpose, two radar instruments facing each other were used to collect complementary measurements. The C-band POLDIRAD weather radar from the German Aerospace Center (DLR), Oberpfaffenhofen and the Ka-band MIRA-35 cloud radar from the Ludwig Maximilians University of Munich (LMU) were used to monitor stratiform precipitation in the vertical cross-section area between both instruments. The logarithmic difference of radar reflectivities at two different wavelengths (54.5 and 8.5 mm), known as dual-wavelength ratio, was exploited to provide information about the size of the detected ice hydrometeors, taking advantage of the different scattering behavior in the Rayleigh and Mie regime. Along with the dual-wavelength ratio, differential radar reflectivity measurements from POLDIRAD provided information about the apparent shape of the detected ice hydrometeors. Scattering simulations using the T-matrix method were performed for oblate and horizontally aligned prolate ice spheroids of varying shape and size using a realistic particle size distribution and a well-established mass-size relationship. The combination of dual-wavelength ratio, radar reflectivity and differential radar reflectivity measurements as well as scattering simulations was used for the development of a novel retrieval for ice cloud microphysics. The development of the retrieval scheme also comprised a method to estimate the hydrometeor attenuation in both radar bands. To demonstrate this approach, a feasibility study was conducted on three stratiform snow events which were monitored over Munich in January 2019. The ice retrieval can obtain ice particle shape, size and mass which are in line with differential radar reflectivity, dual-wavelength ratio and radar reflectivity observations when a suitable mass-size relation is used and when ice hydrometeors are assumed to be represented by oblate ice spheroids. A furthermore finding was the importance of the differential radar reflectivity for the particle size retrieval directly above the MIRA-35 cloud radar. Especially for that observation geometry, the simultaneous slantwise observation from the polarimetric weather radar POLDIRAD could reduce ambiguities in retrieval of the ice particle size by constraining the ice particle shape. [ABSTRACT FROM AUTHOR]
Published: 2021
Full Text: View/download PDF

32. Evaluation of convective cloud microphysics in numerical weather prediction model with dual-wavelength polarimetric radar observations: methods and examples.

Author: Köcher, Gregor, Zinner, Tobias, Knote, Christoph, Tetoni, Eleni, Ewald, Florian, and Hagen, Martin
Subjects: NUMERICAL weather forecasting, CONVECTIVE clouds, MICROPHYSICS, RADAR, PREDICTION models
Abstract: The representation of cloud microphysical processes contributes substantially to the uncertainty of numerical weather simulations. In part, this is owed to some fundamental knowledge gaps in the underlying processes due to the difficulty to observe them directly. On the path to close these gaps we present a setup for the systematic characterization of differences between numerical weather model and radar observations for convective weather situations. Radar observations are introduced which provide targeted dual-wavelength and polarimetric measurements of convective clouds with the potential to provide more detailed information about hydrometeor shapes and sizes. A convection permitting regional weather model setup is established using 5 different microphysics schemes (double-moment, spectral bin (FSBM), and particle property prediction (P3)). Observations are compared to hindcasts which are created with a polarimetric radar forward simulator for all measurement days. A cell-tracking algorithm applied to radar and model data facilitates comparison on a cell object basis. Statistical comparisons of radar observations and numerical weather model runs are presented on a dataset of 30 convection days. In general, simulations show too few weak and small-scale convective cells. Contoured frequency by altitude distributions of radar signatures reveal deviations between the schemes and observations in ice and liquid phase. Apart from the P3 scheme, simulated reflectivities in the ice phase are too high. Dual-wavelength signatures demonstrate issues of most schemes to correctly represent ice particle size distributions, producing overly large graupel particles. Comparison of polarimetric radar signatures reveal issues of all schemes except the FSBM to correctly represent rain particle size distributions. [ABSTRACT FROM AUTHOR]
Published: 2021
Full Text: View/download PDF

33. Deployment of the C-band radar Poldirad on Barbados during EUREC4A.

Author: Hagen, Martin, Ewald, Florian, Groß, Silke, Oswald, Lothar, Farrell, David A., Forde, Marvin, Gutleben, Manuel, Heumos, Johann, Reimann, Jens, Tetoni, Eleni, Marinou, Eleni, Möller, Gregor, Kiemle, Christoph, Li, Qiang, Chewitt-Lucas, Rebecca, Daley, Alton, Grant, Delando, and Hall, Kashawn
Subjects: BARBADOS
Abstract: The German polarimetric C-band weather radar Poldirad (Polarization Diversity Radar) was deployed for the international field campaign EUREC4A (ElUcidating the RolE of Cloud-Circulation Coupling in ClimAte) on the island of Barbados. Poldirad was operated on Barbados from February until August 2020. Focus of the installation was monitoring clouds and precipitation in the trade wind region east of Barbados. Different scanning modes were used with a temporal sequence of 5 minutes and a maximum range of 375 km. In addition to built-in quality control performed by the radar signal processor, it was found that the copoloar correlation coefficient ρHV can be used to remove contamination of radar products by sea clutter. Radar images were available in real-time for all campaign participants and onboard of research aircraft. Examples of mesoscale precipitation patterns, rain rate accumulation, diurnal cycle, and vertical distribution are given to show the potential of the radar measurements for further studies on the life cycle of precipitating shallow cumulus clouds and other related aspects. Poldirad data from the EUREC4A campaign are available on the EUREC4A AERIS database: https://doi.org/10.25326/218 (Hagen et al., 2021a) for raw data and https://doi.org/10.25326/217 (Hagen et al., 2021b) for gridded data. [ABSTRACT FROM AUTHOR]
Published: 2021
Full Text: View/download PDF

34. Lidar Based Separation of Polluted Dust Observed Over Warsaw (Case Study on 09 August 2013).

Author: Liu, D., Wang, Y., Wu, Y., Gross, B., Moshary, F., Szczepanik, Dominika, Tetoni, Eleni, Wang, Dongxiang, and Stachlewska, Iwona S.
Subjects: LIDAR, DUST, AEROSOLS, BACKSCATTERING, POLLUTION
Abstract: This paper presents preliminary results of using an extended POLIPHON method for separation of dust and non-dust aerosol backscatter coefficient, applied on a case study of 9th August 2013. That day, long-range transport of mineral dust over EARLINET-ACTRIS lidar site in Warsaw was observed with the 8-channel PollyXT-UW lidar. The dust particles were also observed by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on board the CALIPSO satellite. The backward trajectories calculated using the HYSPLIT model confirmed the air-mass transport from Northern Africa. Results yield possible dust separation for the mixture of dust with other aerosol types, such as pollution, marine type, etc. [ABSTRACT FROM AUTHOR]
Published: 2020
Full Text: View/download PDF

35. Tropospheric and stratospheric smoke over Europe as observed within EARLINET/ACTRIS in summer 2017

Author: Baars, Holger, Acheson, Karen, Althausen, Dietrich, Amiridis, Vassilis, Amodeo, Aldo, Ansmann, Albert, Apituley, Arnoud, Alados Arboledas, Lucal, Baldasano, José M., Baray, Jean-Luc, Barragán, Rubén, Belegante, Livio, Antonio Benavent-Oltra, Jose, Bortoli, Daniele, Bühl, Johannes, Comeron, Adolfo, Córdoba, Carmen, D'Amico, Guiseppe, Aguila, Ana del, Dionisi, Davide, Ene, Dragos, Engelmann, Ronny, Fernández García, Alfonso Javier, Fréville, Patrick, Gausa, Michael, Gialitaki, Anna, Goloub, Philippe, Grigorov, Ivan, Guerrero-Rascado, Jean Luis, Haarig, Moritz, Haefele, Alexander, Haeffelin, Martial, Hanuš, Vlastimil, Heese, Birgit, Hervo, Maxime, Hofer, Julian, Hu, Qiaoyun, Iarlori, Marco, Jimenez, Cristofer, Liberti, Gianluigi, Marinou, Eleni, Martucci, Giovanni, Mattis, Ina, Mona, Lucia, Montoux, Nadège, Müller, Detlef, Mylonaki, Maria, Nicolae, Doina, Ortiz-Amezcua, Pablo, Papagiannopoulos, Nikos, Papayannis, Alex, Perrone, Maria Rita, Pietras, Christophe, Pietruczuk, Aleksander, Podvin, Thierry, Popovici, Ioana, Proestakis, Emmanouil, Radenz, Martin, Romano, Salvatore, Schechner, Yoav, Seifert, Patric, Sicard, Michael, Skupin, Annett, Soupiona, Ourania, Stachlewska, Iwona S., Tetoni, Eleni, Trickl, Thomas, Vesselovski, Igor, Vladimir, Zdimal, Vogelmann, Hannes, and Wandinger, Ulla
Subjects: Earth sciences, EARLINET, stratospheric smoke, ddc:550, ACTRIS, lidar
Abstract: For several weeks in summer 2017, strong smoke layers were observed over Europe at numerous EARLINET stations. EARLINET is the European research lidar network and part of ACTRIS and comprises more than 30 ground-based lidars. The smoke layers were observed in the troposphere as well as in the stratosphere up to 25 km from Northern Scandinavia over whole western and central Europe to the Mediterranean regions. Backward trajectory analysis among other tools revealed that these smoke layers originated from strong wild fires in western Canada in combination with pyrocumulus convection. An extraordinary fire event in the mid of August caused intense smoke layers that were observed across Europe for several weeks starting on 18 August 2017. Maximum aerosol optical depths up to 1.0 at 532 nm were observed at Leipzig, Germany, on 22 August 2017 during the peak of this event. The stratospheric smoke layers reached extinction coefficient values of more than 600 Mm−1 at 532 nm, a factor of 10 higher than observed for volcanic ash after the Pinatubo eruption in the 1990s. First analyses of the intensive optical properties revealed low particle depolarization values at 532 nm for the tropospheric smoke (spherical particles) and rather high values (up to 20%) in the stratosphere. However, a strong wavelength dependence of the depolarization ratio was measured for the stratospheric smoke. This indicates irregularly shaped stratospheric smoke particles in the size range of the accumulation mode. This unique depolarization feature makes it possible to distinguish clearly smoke aerosol from cirrus clouds or other aerosol types by polarization lidar measurements. Particle extinction-to-backscatter ratios were rather low in the order of 40 to 50 sr at 355 nm, while values between 70-90 sr were measured at higher wavelengths. In the western and central Mediterranean, stratospheric smoke layers were most prominent in the end of August at heights between 16 and 20 km. In contrast, stratospheric smoke started to occur in the eastern Mediterranean (Cyprus and Israel) in the beginning of September between 18 and 23 km. Stratospheric smoke was still visible in the beginning of October at certain locations (e.g. Evora, Portugal), while tropospheric smoke was mainly observed until the end of August within Europe. An overview of the smoke layers measured at several EARLINET sites will be given. The temporal development of these layers as well as their geometrical and optical properties will be presented.
Published: 2018
Full Text: View/download PDF

36. Microphysical characterization of smoke from Canadian fires

Author: Gialitaki, Anna G., Tsekeri, Alexandra, Vassilis Amiridis, Samaras, Stefanos, Marinou, Eleni, Haarig, Moritz, Baars, Holger, Tetoni, Eleni, and Ansmann, Albert
Published: 2018
Full Text: View/download PDF

37. Earlinet validation of CATS L2 product

Author: Proestakis, Emmanouil, Amiridis, Vassilis, Kottas, Michael, Marinou, Eleni, Binietoglou, Ioannis, Ansmann, Albert, Wandinger, Ulla, Yorks, John, Nowottnick, Edward, Makhmudov, Abduvosit, Papayannis, Alexandros, Pietruczuk, Aleksander, Gialitaki, Anna, Apituley, Arnoud, Muñoz-Porcar, Constantino, Bortoli, Daniele, Dionisi, Davide, Althausen, Dietrich, Mamali, D., Balis, Dimitris, Nicolae, Doina, Tetoni, Eleni, Luigi Liberti, Gian, Baars, Holger, Stachlewska, Iwona S., Voudouri, Kalliopi Artemis, Mona, Lucia, Mylonaki, Maria, Rita Perrone, Maria, João Costa, Maria, Sicard, Michael, Papagiannopoulos, Nikolaos, Siomos, Nikolaos, Burlizzi, Pasquale, Engelmann, Ronny, Abdullaev, Sabur F., Hofer, Julian, Pappalardo, Gelsomina, Nicolae, D., Makoto, A., Vassilis, A., Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, and Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
Subjects: validation, Aerosols, 010504 meteorology & atmospheric sciences, EARLINET, Physics, QC1-999, Enginyeria de la telecomunicació [Àrees temàtiques de la UPC], 01 natural sciences, International Space Station, Aerosol, 010309 optics, Lidar, Product (mathematics), 0103 physical sciences, Particle, Earlinet, Backscatter coefficient, Aeronàutica i espai [Àrees temàtiques de la UPC], Estació Espacial Internacional, lidar, Transport system, 0105 earth and related environmental sciences, Remote sensing
Abstract: The Cloud-Aerosol Transport System (CATS) onboard the International Space Station (ISS), is a lidar system providing vertically resolved aerosol and cloud profiles since February 2015. In this study, the CATS aerosol product is validated against the aerosol profiles provided by the European Aerosol Research Lidar Network (EARLINET). This validation activity is based on collocated CATS-EARLINET measurements and the comparison of the particle backscatter coefficient at 1064nm.
Published: 2018

38. EARLINET evaluation of the CATS Level 2 aerosol backscatter coefficient product

Author: Proestakis, Emmanouil, primary, Amiridis, Vassilis, additional, Marinou, Eleni, additional, Binietoglou, Ioannis, additional, Ansmann, Albert, additional, Wandinger, Ulla, additional, Hofer, Julian, additional, Yorks, John, additional, Nowottnick, Edward, additional, Makhmudov, Abduvosit, additional, Papayannis, Alexandros, additional, Pietruczuk, Aleksander, additional, Gialitaki, Anna, additional, Apituley, Arnoud, additional, Szkop, Artur, additional, Muñoz Porcar, Constantino, additional, Bortoli, Daniele, additional, Dionisi, Davide, additional, Althausen, Dietrich, additional, Mamali, Dimitra, additional, Balis, Dimitris, additional, Nicolae, Doina, additional, Tetoni, Eleni, additional, Liberti, Gian Luigi, additional, Baars, Holger, additional, Mattis, Ina, additional, Stachlewska, Iwona Sylwia, additional, Voudouri, Kalliopi Artemis, additional, Mona, Lucia, additional, Mylonaki, Maria, additional, Perrone, Maria Rita, additional, Costa, Maria João, additional, Sicard, Michael, additional, Papagiannopoulos, Nikolaos, additional, Siomos, Nikolaos, additional, Burlizzi, Pasquale, additional, Pauly, Rebecca, additional, Engelmann, Ronny, additional, Abdullaev, Sabur, additional, and Pappalardo, Gelsomina, additional
Published: 2019
Full Text: View/download PDF

39. EARLINET evaluation of the CATS L2 aerosol backscatter coefficient product

Author: Proestakis, Emmanouil, primary, Amiridis, Vassilis, additional, Marinou, Eleni, additional, Binietoglou, Ioannis, additional, Ansmann, Albert, additional, Wandinger, Ulla, additional, Hofer, Julian, additional, Yorks, John, additional, Nowottnick, Edward, additional, Makhmudov, Abduvosit, additional, Papayannis, Alexandros, additional, Pietruczuk, Aleksander, additional, Gialitaki, Anna, additional, Apituley, Arnoud, additional, Szkop, Artur, additional, Muñoz Porcar, Constantino, additional, Bortoli, Daniele, additional, Dionisi, Davide, additional, Althausen, Dietrich, additional, Mamali, Dimitra, additional, Balis, Dimitris, additional, Nicolae, Doina, additional, Tetoni, Eleni, additional, Liberti, Gian Luigi, additional, Baars, Holger, additional, Mattis, Ina, additional, Stachlewska, Iwona, additional, Voudouri, Kalliopi Artemis, additional, Mona, Lucia, additional, Mylonaki, Maria, additional, Perrone, Maria Rita, additional, Costa, Maria João, additional, Sicard, Michael, additional, Papagiannopoulos, Nikolaos, additional, Siomos, Nikolaos, additional, Burlizzi, Pasquale, additional, Pauly, Rebecca, additional, Engelmann, Ronny, additional, Abdullaev, Sabur, additional, and Pappalardo, Gelsomina, additional
Published: 2019
Full Text: View/download PDF

40. Earlinet validation of CATS L2 product

Author: Proestakis, Emmanouil (author), Amiridis, Vassilis (author), Kottas, Michael (author), Marinou, Eleni (author), Binietoglou, Ioannis (author), Ansmann, Albert (author), Wandinger, Ulla (author), Yorks, John (author), Nowottnick, Edward (author), Makhmudov, Abduvosit (author), Papayannis, Alexandros (author), Pietruczuk, Aleksander (author), Gialitaki, Anna (author), Apituley, Arnoud (author), Muñoz-Porcar, Constantino (author), Bortoli, Daniele (author), Dionisi, Davide (author), Althausen, Dietrich (author), Mamali, D. (author), Balis, Dimitris (author), Nicolae, Doina (author), Tetoni, Eleni (author), Luigi Liberti, Gian (author), Baars, Holger (author), Stachlewska, Iwona S. (author), Voudouri, Kalliopi Artemis (author), Mona, Lucia (author), Mylonaki, Maria (author), Rita Perrone, Maria (author), João Costa, Maria (author), Sicard, Michael (author), Papagiannopoulos, Nikolaos (author), Siomos, Nikolaos (author), Burlizzi, Pasquale (author), Engelmann, Ronny (author), Abdullaev, Sabur F. (author), Hofer, Julian (author), Pappalardo, Gelsomina (author), Proestakis, Emmanouil (author), Amiridis, Vassilis (author), Kottas, Michael (author), Marinou, Eleni (author), Binietoglou, Ioannis (author), Ansmann, Albert (author), Wandinger, Ulla (author), Yorks, John (author), Nowottnick, Edward (author), Makhmudov, Abduvosit (author), Papayannis, Alexandros (author), Pietruczuk, Aleksander (author), Gialitaki, Anna (author), Apituley, Arnoud (author), Muñoz-Porcar, Constantino (author), Bortoli, Daniele (author), Dionisi, Davide (author), Althausen, Dietrich (author), Mamali, D. (author), Balis, Dimitris (author), Nicolae, Doina (author), Tetoni, Eleni (author), Luigi Liberti, Gian (author), Baars, Holger (author), Stachlewska, Iwona S. (author), Voudouri, Kalliopi Artemis (author), Mona, Lucia (author), Mylonaki, Maria (author), Rita Perrone, Maria (author), João Costa, Maria (author), Sicard, Michael (author), Papagiannopoulos, Nikolaos (author), Siomos, Nikolaos (author), Burlizzi, Pasquale (author), Engelmann, Ronny (author), Abdullaev, Sabur F. (author), Hofer, Julian (author), and Pappalardo, Gelsomina (author)
Abstract: The Cloud-Aerosol Transport System (CATS) onboard the International Space Station (ISS), is a lidar system providing vertically resolved aerosol and cloud profiles since February 2015. In this study, the CATS aerosol product is validated against the aerosol profiles provided by the European Aerosol Research Lidar Network (EARLINET). This validation activity is based on collocated CATS-EARLINET measurements and the comparison of the particle backscatter coefficient at 1064nm., Atmospheric Remote Sensing
Published: 2018
Full Text: View/download PDF

41. Modification of Local Urban Aerosol Properties by Long-Range Transport of Biomass Burning Aerosol

Author: Stachlewska, Iwona, primary, Samson, Mateusz, additional, Zawadzka, Olga, additional, Harenda, Kamila, additional, Janicka, Lucja, additional, Poczta, Patryk, additional, Szczepanik, Dominika, additional, Heese, Birgit, additional, Wang, Dongxiang, additional, Borek, Karolina, additional, Tetoni, Eleni, additional, Proestakis, Emmanouil, additional, Siomos, Nikolaos, additional, Nemuc, Anca, additional, Chojnicki, Bogdan, additional, Markowicz, Krzysztof, additional, Pietruczuk, Aleksander, additional, Szkop, Artur, additional, Althausen, Dietrich, additional, Stebel, Kerstin, additional, Schuettemeyer, Dirk, additional, and Zehner, Claus, additional
Published: 2018
Full Text: View/download PDF

42. CCN estimates from CALIOP/CALIPSO observations during the EUFAR-ACEMED campaign.

Author: Amiridis, Vassilis, Georgoulias, Aristeidis K., Marinou, Eleni, Tsekeri, Alexandra, Proestakis, Emmanouil, Tetoni, Eleni, Zanis, Prodromos, and Marenco, Franco
Published: 2019

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Region

Database

Publisher

42 results on '"Tetoni, Eleni"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources