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1. Iaoos Observations of Aerosols and Clouds in the High Arctic by Autonomous Drifting Lidar Platforms

Author

Pelon J., Di Biagio C., Mariage V., Genau P., Loyer L., Raut J.-C., and Ancellet G.

Subjects
Physics, QC1-999
Abstract

New drifting platforms have been deployed within the French project IAOOS (Ice-Atmosphere-Ocean Observing System) in the Arctic since 2014. Radiation and meteorological parameters are measured at the surface and profiles of aerosol and cloud properties are obtained with autonomous backscatter lidar systems. These platforms are indeed equipped for ocean-ice-atmosphere studies over the Arctic to better understand processes and interactions controlling sea-ice changes [1]. As stations in the Arctic are sparse, they can also be used as reference measurements for satellite observations. They are deployed in the Arctic almost every year and allow to perform regular measurements of the vertical structure and optical properties of the atmosphere in complement to satellite observations. Other data on snow, ice and ocean are simultaneously measured. Comparisons were made with CALIPSO/CALIOP observations. Measurements on the atmosphere are presented and results are discussed.

Published
2020
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2. Air Composition over the Russian Arctic: 3—Trace Gases

Author

Antokhina, O. Yu., Antokhin, P. N., Arshinova, V. G., Arshinov, M. Yu., Ancellet, G., Belan, B. D., Belan, S. B., Davydov, D. K., Ivlev, G. A., Kozlov, A. V., Law, K., Nédélec, P., Rasskazchikova, T. M., Paris, J.-D., Savkin, D. E., Simonenkov, D. V., Sklyadneva, T. K., Tolmachev, G. N., and Fofonov, A. V.

Published
2024
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3. Air Composition over the Russian Arctic: 2–Carbon Dioxide

Author

Antokhina, O. Yu., Antokhin, P. N., Arshinova, V. G., Arshinov, M. Yu., Ancellet, G., Belan, B. D., Belan, S. B., Guruleva, E. V., Davydov, D. K., Ivlev, G. A., Kozlov, A. V., Law, K., Nédélec, P., Rasskazchikova, T. M., Paris, J.-D., Savkin, D. E., Simonenkov, D. V., Sklyadneva, T. K., Tolmachev, G. N., and Fofonov, A. V.

Published
2023
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4. Comparison of Long Term Tropospheric Ozone Trends Measured by Lidar and ECC Ozonesondes from 1991 to 2010 in Southern France

Author

Ancellet G., Gaudel A., and Godin-Beekmann S.

Subjects
Physics, QC1-999
Abstract

ECC (Electrochemical Concentration Cell) ozonesondes and UV DIAL (Differential Absorption Lidar) measurements have been carried out simultaneously at OHP (Observatoire de Haute Provence, 44°N, 6.7°E, 690 m) since 1991. A unique long-term trend assessment by two different instruments operated routinely at the same location is possible. Air mass trajectories have been calculated for all the ozone observations available at OHP. The bias between the seasonal mean calculated with lidar and ECC ozone vertical profiles for 4 timeperiods of 5 years is 0.6 ppbv in the free troposphere (4-8 km). Larger differences (> 10 ppbv) are explained by the need for clear sky conditions during lidar observations. The measurements of both instruments have been combined to decrease the impact of short-term atmospheric variability on the trend estimate.

Published
2016
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5. Near- and middle-ultraviolet reconfigurable Raman source using a record-low UV/visible transmission loss inhibited-coupling hollow-core fiber

Author

Chafer, M., Osório, J. H., Dhaybi, A., Ravetta, F., Amrani, F., Delahaye, F., Debord, B., Cailteau-Fischbach, C., Ancellet, G., Gérôme, F., and Benabid, F.

Subjects
Physics - Optics
Abstract

We report on two types of Raman laser sources emitting in the near and middle ultraviolet spectral ranges by the use of a solarization-resilient gas-filled inhibited-coupling (IC) hollow-core photonic-crystal fiber (HCPCF) with record low transmission loss (minimum of 5 dB/km at 480 nm). The first source type emits a Raman comb generated in a hydrogen-filled HCPCF pumped by a 355 nm wavelength microchip nanosecond pulsed laser. The generated comb lines span from 270 nm to the near-infrared region with no less than 20 lines in the 270-400 nm wavelength range. The second type stands for the first dual-wavelength Raman source tuned to the ozone absorption band in the ultraviolet. Such dual-wavelength source emits at either 266 nm and 289 nm, or 266 nm and 299 nm. The relative power of the pair components is set to optimize the sensitivity of ozone detection in differential absorption lidar (DIAL). The source's physical package represents more than 10-fold size-reduction relative to current DIAL lasers, thus opening new opportunities in on-field ozone monitoring and mapping. Both Raman sources exhibit a very small footprint and are solarization-free.

Published
2021
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6. Erratum to: Air Composition over the Russian Arctic: 3—Trace Gases

Author

Antokhina, O. Yu., Antokhin, P. N., Arshinova, V. G., Arshinov, M. Yu., Ancellet, G., Belan, B. D., Belan, S. B., Davydov, D. K., Ivlev, G. A., Kozlov, A. V., Law, K., Nédélec, P., Rasskazchikova, T. M., Paris, J.-D., Savkin, D. E., Simonenkov, D. V., Sklyadneva, T. K., Tolmachev, G. N., and Fofonov, A. V.

Published
2024
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7. Volcanic Emissions, Plume Dispersion, and Downwind Radiative Impacts Following Mount Etna Series of Eruptions of February 21–26, 2021

Author

Sellitto, P., primary, Salerno, G., additional, Corradini, S., additional, Xueref‐Remy, I., additional, Riandet, A., additional, Bellon, C., additional, Khaykin, S., additional, Ancellet, G., additional, Lolli, S., additional, Welton, E. J., additional, Boselli, A., additional, Sannino, A., additional, Cuesta, J., additional, Guermazi, H., additional, Eremenko, M., additional, Merucci, L., additional, Stelitano, D., additional, Guerrieri, L., additional, and Legras, B., additional

Published
2023
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8. Air composition over the Russian sector of the Arctic. 2. Carbon dioxide

Author

Antokhina, O.Yu., primary, Antokhin, P.N., additional, Arshinova, V.G., additional, Arshinov, M.Yu., additional, Ancellet, G., additional, Belan, B.D., additional, Belan, S.B., additional, Guruleva, E.V., additional, Davydov, D.K., additional, Ivlev, G.A., additional, Kozlov, A.V., additional, Law, K., additional, Nédélec, P., additional, Rasskazchikova, T.M., additional, Paris, J.-D., additional, Savkin, D.E., additional, Simonenkov, D.V., additional, Sklyadneva, T.K., additional, Tolmachev, G.N., additional, and Fofonov, A.V., additional

Published
2023
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10. Individual Reports from JETDLAG Contributors

Author

Lambrecht, A., Böttner, H., Tacke, M., Fischer, H., Bonifer, J., Burrows, J. P., Klemp, D., Parchatka, U., Roths, J., Schiller, C., Zenker, T., Zitzelsberger, R., Harris, G. W., Werle, P., Mücke, R., Slemr, F., Baldacchini, G., D’Amato, F., Grisar, Roland, Anders, J., Knothe, M., Riedel, W. J., Brassington, D. J., Leod, Hélène Mac, Poncet, H., Ancellet, G., Carrasco, I., Lubin, O., Mégie, G., Huard, F., Riedel, W., Borrell, Peter, editor, Borrell, Patricia M., editor, Cvitaš, Tomislav, editor, Kelly, Kerry, editor, Seiler, Wolfgang, editor, Bösenberg, Jens, editor, Brassington, David J., editor, and Simon, Paul C., editor

Published
1997
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11. Spatial and Temporal Variability of Tropospheric Ozone over Europe : The Report from TOR Task Group 1

Author

Scheel, H. E., Ancellet, G., Areskoug, H., Beck, J., Bösenberg, J., De Muer, D., Dutot, A. L., Egelov, A. H., Esser, P., Etienne, A., Ferenczi, Z., Geiß, H., Grabbe, G., Granby, K., Gomišcek, B., Haszpra, L., Kezele, N., Klasinc, L., Laurila, T., Lindskog, A., Mowrer, J., Nielsen, T., Perros, P., Roemer, M., Schmitt, R., Simmonds, P., Sladkovic, R., Smit, H., Solberg, S., Toupance, G., Varotsos, C., de Waal, L., Borrell, Peter, editor, Borrell, Patricia M., editor, Cvitaš, Tomislav, editor, Kelly, Kerry, editor, Seiler, Wolfgang, editor, and Hov, Øystein, editor

Published
1997
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12. Stratosphere-Troposphere Exchange: Regional and Global Tropopause Folding Occurrence : The Report from TOR Task Group 3b

Author

Beekmann, M., Ancellet, G., Blonsky, S., De Muer, D., Ebel, A., Elbern, H., Hendricks, J., Kowol, J., Mancier, C., Sladkovic, R., Smit, H. G. J., Speth, P., Trickl, T., Van Haver, Ph., Borrell, Peter, editor, Borrell, Patricia M., editor, Cvitaš, Tomislav, editor, Kelly, Kerry, editor, Seiler, Wolfgang, editor, and Hov, Øystein, editor

Published
1997
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15. Overview: Integrative and Comprehensive Understanding on Polar Environments (iCUPE) — concept and initial results

Author

Petäjä, T., Duplissy, E.-M., Tabakova, K., Schmale, J., Altstädter, B., Ancellet, G., Arshinov, M., Balin, Y., Baltensperger, U., Bange, J., Beamish, A., Belan, B., Berchet, A., Bossi, R., Cairns, W. R. L., Ebinghaus, R., El Haddad, I., Ferreira-Araujo, B., Franck, A., Huang, L., Hyvärinen, A., Humbert, A., Kalogridis, A.-C., Konstantinov, P., Lampert, A., MacLeod, M., Magand, O., Mahura, A., Marelle, L., Masloboev, V., Moisseev, D., Moschos, V., Neckel, N., Onishi, T., Osterwalder, S., Ovaska, A., Paasonen, P., Panchenko, M., Pankratov, F., Pernov, J. B., Platis, A., Popovicheva, O., Raut, J.-C., Riandet, A., Sachs, T., Salvatori, R., Salzano, R., Schröder, L., Schön, M., Shevchenko, V., Skov, H., Sonke, J. E., Spolaor, A., Stathopoulos, V. K., Strahlendorff, M., Thomas, J. L., Vitale, V., Vratolis, S., Barbante, C., Chabrillat, S., Dommergue, A., Eleftheriadis, K., Heilimo, J., Law, K. S., Massling, A., Noe, S. M., Paris, J.-D., Prévôt, A. S. H., Riipinen, I., Wehner, B., Xie, Z., Lappalainen, H. K., Petäjä, T., Duplissy, E.-M., Tabakova, K., Schmale, J., Altstädter, B., Ancellet, G., Arshinov, M., Balin, Y., Baltensperger, U., Bange, J., Beamish, A., Belan, B., Berchet, A., Bossi, R., Cairns, W. R. L., Ebinghaus, R., El Haddad, I., Ferreira-Araujo, B., Franck, A., Huang, L., Hyvärinen, A., Humbert, A., Kalogridis, A.-C., Konstantinov, P., Lampert, A., MacLeod, M., Magand, O., Mahura, A., Marelle, L., Masloboev, V., Moisseev, D., Moschos, V., Neckel, N., Onishi, T., Osterwalder, S., Ovaska, A., Paasonen, P., Panchenko, M., Pankratov, F., Pernov, J. B., Platis, A., Popovicheva, O., Raut, J.-C., Riandet, A., Sachs, T., Salvatori, R., Salzano, R., Schröder, L., Schön, M., Shevchenko, V., Skov, H., Sonke, J. E., Spolaor, A., Stathopoulos, V. K., Strahlendorff, M., Thomas, J. L., Vitale, V., Vratolis, S., Barbante, C., Chabrillat, S., Dommergue, A., Eleftheriadis, K., Heilimo, J., Law, K. S., Massling, A., Noe, S. M., Paris, J.-D., Prévôt, A. S. H., Riipinen, I., Wehner, B., Xie, Z., and Lappalainen, H. K.

Abstract

The role of polar regions is increasing in terms of megatrends such as globalization, new transport routes, demography, and the use of natural resources with consequent effects on regional and transported pollutant concentrations. We set up the ERA-PLANET Strand 4 project “iCUPE – integrative and Comprehensive Understanding on Polar Environments” to provide novel insights and observational data on global grand challenges with an Arctic focus. We utilize an integrated approach combining in situ observations, satellite remote sensing Earth observations (EOs), and multi-scale modeling to synthesize data from comprehensive long-term measurements, intensive campaigns, and satellites to deliver data products, metrics, and indicators to stakeholders concerning the environmental status, availability, and extraction of natural resources in the polar areas. The iCUPE work consists of thematic state-of-the-art research and the provision of novel data in atmospheric pollution, local sources and transboundary transport, the characterization of arctic surfaces and their changes, an assessment of the concentrations and impacts of heavy metals and persistent organic pollutants and their cycling, the quantification of emissions from natural resource extraction, and the validation and optimization of satellite Earth observation (EO) data streams. In this paper we introduce the iCUPE project and summarize initial results arising out of the integration of comprehensive in situ observations, satellite remote sensing, and multi-scale modeling in the Arctic context.

Published
2020

23. Iaoos Observations of Aerosols and Clouds in the High Arctic by Autonomous Drifting Lidar Platforms.

Author

Liu, D., Wang, Y., Wu, Y., Gross, B., Moshary, F., Pelon, J., Di Biagio, C., Mariage, V., Genau, P., Loyer, L., Raut, J.-C., and Ancellet, G.

Subjects
AEROSOLS, RADIATION, METEOROLOGY, OPTICAL properties, ARTIFICIAL satellites
Abstract

New drifting platforms have been deployed within the French project IAOOS (Ice-Atmosphere-Ocean Observing System) in the Arctic since 2014. Radiation and meteorological parameters are measured at the surface and profiles of aerosol and cloud properties are obtained with autonomous backscatter lidar systems. These platforms are indeed equipped for ocean-ice-atmosphere studies over the Arctic to better understand processes and interactions controlling sea-ice changes [1]. As stations in the Arctic are sparse, they can also be used as reference measurements for satellite observations. They are deployed in the Arctic almost every year and allow to perform regular measurements of the vertical structure and optical properties of the atmosphere in complement to satellite observations. Other data on snow, ice and ocean are simultaneously measured. Comparisons were made with CALIPSO/CALIOP observations. Measurements on the atmosphere are presented and results are discussed. [ABSTRACT FROM AUTHOR]

Published
2020
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24. Ozone transport during a cut-off low event studied in the frame of the TOASTE program

Author

Ancellet, G, Beekmann, M, Papayannis, A, and Megie, G

Subjects
Geophysics
Abstract

A study of ozone transfer to the troposphere has been performed during two phases of the evolution of a cut-off low using both ozone vertical profiles and objective analysis of the ECMWF to compute potential vorticity distributions and air mass trajectories. Ozone profiles were measured by a ground based lidar system at the Observatoire de Haute Provence (OHP, 43 deg 55 N, 5 deg 42 E). A stratospheric ozone transport into the troposphere has been observed during a tropopause fold which occurred at the beginning of the cut-off low formation and during the erosion phase of the cut-off low. From the estimate of the maximum ozone content transferred to the troposphere, both mechanisms have the same order of magnitude of influence on the ozone flux to the troposphere. On a time scale of a few days, the correlation is very good between the potential vorticity and the ozone time evolution in the vicinity of the upper level frontal system.

Published
1994

25. A Multi-wavelength Ozone Lidar for the EASOE Experiment

Author

Godin, S, Ancellet, G, David, C, Porteneuve, J, Leroy, C, Mitev, V, Emery, Y, Flesia, C, Rizi, V, and Visconti, G

Subjects
Environment Pollution
Abstract

The study of the ozone layer during winter and springtime in high latitude regions is a major issue in atmospheric research. For a better understanding of these problems, an important experimental campaign called EASOE (European Arctic Stratospheric Ozone Experiment) was organized by the European Community during the winter 1991-1992. Its main objective was to establish a budget of the ozone destruction processes on the whole northern hemisphere. This implied the simultaneous operation of different types of instruments located in both high and mid-latitude regions in order to study the destruction processes as well as the evolution of the ozone layer during the period of the campaign. A description will be given here of a mobile ozone lidar instrument specially designed for operation during the EASOE campaign. This system, which performs ozone measurements in the 5 to 40 km altitude range was located in Sodankyla, Finland as part of the ELSA experiment which also includes operation of another multi-wavelength lidar designed for polar stratospheric cloud measurements.

Published
1992

26. First Results from TROLIX 1991: an Intercomparison of Tropospheric Ozone Lidars

Author

Apituley, A, Boesenberg, J, Ancellet, G, Edner, H, Galle, B, Bergwerff, J. B, Voncossart, G, Fiedler, J, Dejonge, C. N, and Mellquist, J

Subjects
Environment Pollution
Abstract

Within the framework of the European environmental research programme EUROTRAC, lidar systems for routine measurements of vertical ozone profiles throughout the planetary boundary layer and the free troposphere are currently under development. Several of these systems are now operational and an intercomparison experiment was undertaken in the period from June 10 to June 28, 1991 in Bilthoven, the Netherlands. The main scientific objectives defined for the campaign are: (1) compare the lidar measurements to in situ measurements of the ozone concentration; (2) determine how many and which wavelengths are needed for a sufficiently accurate ozone retrieval in the lower troposphere under realistic conditions; (3) assess the accuracy that can be achieved under realistic conditions; and (4) compare the performance of the participating systems.

Published
1992

27. The NDSC Primary Site at the Observatoire De Haute-provence: Ozone and Aerosols Observations (1986-1992)

Author

Megie, G, Godin, S, Ancellet, G, Beekmann, M, and Lacoste, A. M

Subjects
Environment Pollution
Abstract

The primary site of the newly implemented Network for Detection of Stratospheric Changes (NDSC) includes three main sites in the alpine regions of southern Europe. At one of these observatories, a coherent set of experimental systems has been established to monitor on a long-term basis ozone, aerosols, minor constituents, and temperature vertical distributions in the troposphere and stratosphere. Such techniques include several lidar systems, balloon-borne sondes and ultraviolet visible spectrometry. Lidar measurements of stratospheric aerosols are performed on a routine basis, since 1980. These include the vertical distribution of the extinction and backscattering coefficients from the tropopause. Recently, measurements performed following the eruption of Mount Pinatubo, have allowed researchers to follow the time evolution of the aerosol cloud in middle latitude regions.

Published
1992

29. Tropospheric Ozone Assessment Report: Present-day distribution and trends of tropospheric ozone relevant to climate and global atmospheric chemistry model evaluation

Author

Gaudel, A., primary, Cooper, O. R., additional, Ancellet, G., additional, Barret, B., additional, Boynard, A., additional, Burrows, J. P., additional, Clerbaux, C., additional, Coheur, P.-F., additional, Cuesta, J., additional, Cuevas, E., additional, Doniki, S., additional, Dufour, G., additional, Ebojie, F., additional, Foret, G., additional, Garcia, O., additional, Granados-Muñoz, M. J., additional, Hannigan, J. W., additional, Hase, F., additional, Hassler, B., additional, Huang, G., additional, Hurtmans, D., additional, Jaffe, D., additional, Jones, N., additional, Kalabokas, P., additional, Kerridge, B., additional, Kulawik, S., additional, Latter, B., additional, Leblanc, T., additional, Le Flochmoën, E., additional, Lin, W., additional, Liu, J., additional, Liu, X., additional, Mahieu, E., additional, McClure-Begley, A., additional, Neu, J. L., additional, Osman, M., additional, Palm, M., additional, Petetin, H., additional, Petropavlovskikh, I., additional, Querel, R., additional, Rahpoe, N., additional, Rozanov, A., additional, Schultz, M. G., additional, Schwab, J., additional, Siddans, R., additional, Smale, D., additional, Steinbacher, M., additional, Tanimoto, H., additional, Tarasick, D. W., additional, Thouret, V., additional, Thompson, A. M., additional, Trickl, T., additional, Weatherhead, E., additional, Wespes, C., additional, Worden, H. M., additional, Vigouroux, C., additional, Xu, X., additional, Zeng, G., additional, and Ziemke, J., additional

Published
2018
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31. NOx in the Troposphere

Author

Fehsenfeld, F., Hov, Ø., Ancellet, G. A., Cox, R. A., Ehhalt, D., Hakola, H., Legrand, M., Liu, S., and Isaksen, I. S. A., editor

Published
1988
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32. Source identification and airborne chemical characterisation of aerosol pollution from long-range transport over Greenland during POLARCAT summer campaign 2008

Author

Schmale, J., Schneider, J., Ancellet, G., Quennehen, B., Stohl, A., Sodemann, H., Burkhart, J.F., Hamburger, T., Arnold, S.R., Schwarzenboeck, A., Borrmann, S., Law, K.S., Max-Planck-Institut für Chemie (MPIC), Max-Planck-Gesellschaft, TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de météorologie physique (LaMP), Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS), Norwegian Institute for Air Research (NILU), Institute for Atmospheric and Climate Science [Zürich] (IAC), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), DLR Institut für Physik der Atmosphäre (IPA), Deutsches Zentrum für Luft- und Raumfahrt [Oberpfaffenhofen-Wessling] (DLR), Institute for Climate and Atmospheric Science [Leeds] (ICAS), School of Earth and Environment [Leeds] (SEE), University of Leeds-University of Leeds, Johannes Gutenberg - Universität Mainz (JGU), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU)

Subjects
lcsh:Chemistry, 010504 meteorology & atmospheric sciences, lcsh:QD1-999, 13. Climate action, [SDE.MCG]Environmental Sciences/Global Changes, Atmosphärische Spurenstoffe, aerosol pollution, 010501 environmental sciences, 01 natural sciences, lcsh:Physics, lcsh:QC1-999, 0105 earth and related environmental sciences
Abstract

We deployed an aerosol mass spectrometer during the POLARCAT (Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, of Climate, Chemistry, Aerosols, and Transport) summer campaign in Greenland in June/July 2008 on the research aircraft ATR-42. Online size resolved chemical composition data of submicron aerosol were collected up to 7.6 km altitude in the region 60 to 71° N and 40 to 60° W. Biomass burning (BB) and fossil fuel combustion (FF) plumes originating from North America, Asia, Siberia and Europe were sampled. Transport pathways of detected plumes included advection below 700 hPa, air mass uplifting in warm conveyor belts, and high altitude transport in the upper troposphere. By means of the Lagrangian particle dispersion model FLEXPART, trace gas analysis of O3 and CO, particle size distributions and aerosol chemical composition 48 pollution events were identified and classified into five chemically distinct categories. Aerosol from North American BB consisted of 22% particulate sulphate, while with increasing anthropogenic and Asian influence aerosol in Asian FF dominated plumes was composed of up to 37% sulphate category mean value. Overall, it was found that the organic matter fraction was larger (85%) in pollution plumes than for background conditions (71%). Despite different source regions and emission types the particle oxygen to carbon ratio of all plume classes was around 1 indicating low-volatility highly oxygenated aerosol. The volume size distribution of out-of-plume aerosol showed markedly smaller modes than all other distributions with two Aitken mode diameters of 24 and 43 nm and a geometric standard deviation σg of 1.12 and 1.22, respectively, while another very broad mode was found at 490 nm (σg = 2.35). Nearly pure BB particles from North America exhibited an Aitken mode at 66 nm (σg = 1.46) and an accumulation mode diameter of 392 nm (σg = 1.76). An aerosol lifetime, including all processes from emission to detection, in the range between 7 and 11 days was derived for North American emissions.

Published
2011
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34. Multi-model evaluation of short-lived pollutant distributions over east Asia during summer 2008

Author

Quennehen, B., Raut, J.-C., Law, K. S., Daskalakis, N., Ancellet, G., Clerbaux, C., Kim, S.-W., Lund, M. T., Myhre, G., Olivié, D. J. L., Safieddine, S., Skeie, R. B., Thomas, J. L., Tsyro, S., Bazureau, A., Bellouin, N., Hu, M., Kanakidou, M., Klimont, Z., Kupiainen, K., Myriokefalitakis, S., Quaas, J., Rumbold, S. T., Schulz, M., Cherian, R., Shimizu, A., Wang, J., Yoon, S.-C., Zhu, T., Quennehen, B., Raut, J.-C., Law, K. S., Daskalakis, N., Ancellet, G., Clerbaux, C., Kim, S.-W., Lund, M. T., Myhre, G., Olivié, D. J. L., Safieddine, S., Skeie, R. B., Thomas, J. L., Tsyro, S., Bazureau, A., Bellouin, N., Hu, M., Kanakidou, M., Klimont, Z., Kupiainen, K., Myriokefalitakis, S., Quaas, J., Rumbold, S. T., Schulz, M., Cherian, R., Shimizu, A., Wang, J., Yoon, S.-C., and Zhu, T.

Abstract

The ability of seven state-of-the-art chemistry–aerosol models to reproduce distributions of tropospheric ozone and its precursors, as well as aerosols over eastern Asia in summer 2008, is evaluated. The study focuses on the performance of models used to assess impacts of pollutants on climate and air quality as part of the EU ECLIPSE project. Models, run using the same ECLIPSE emissions, are compared over different spatial scales to in situ surface, vertical profiles and satellite data. Several rather clear biases are found between model results and observations, including overestimation of ozone at rural locations downwind of the main emission regions in China, as well as downwind over the Pacific. Several models produce too much ozone over polluted regions, which is then transported downwind. Analysis points to different factors related to the ability of models to simulate VOC-limited regimes over polluted regions and NOx limited regimes downwind. This may also be linked to biases compared to satellite NO2, indicating overestimation of NO2 over and to the north of the northern China Plain emission region. On the other hand, model NO2 is too low to the south and west of this region and over South Korea/Japan. Overestimation of ozone is linked to systematic underestimation of CO particularly at rural sites and downwind of the main Chinese emission regions. This is likely to be due to enhanced destruction of CO by OH. Overestimation of Asian ozone and its transport downwind implies that radiative forcing from this source may be overestimated. Model-observation discrepancies over Beijing do not appear to be due to emission controls linked to the Olympic Games in summer 2008. With regard to aerosols, most models reproduce the satellite-derived AOD patterns over eastern China. Our study nevertheless reveals an overestimation of ECLIPSE model mean surface BC and sulphate aerosols in urban China in summer 2008. The effect of the short-term emission mitigation in Beijing

Published
2016

35. Arctic Air Pollution: 1 New Insights From POLARCAT-IPY

Author

Law, K. S., Stohl, Andreas, Quinn, P.K., Brock, C., Burkhardt, J.F., Paris, J-D., Ancellet, G., Singh, H.B., Roiger, Anke, Schlager, Hans, Dibb, J., Jacob, D.J., Arnold, S.R., Pelon, J., and Thomas, J.L.

Subjects
climate change, Arctic pollution, Int. Polar Year
Published
2014
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36. Measurements of OH and RO2 radicals at Dome C, East Antarctica

Author

Kukui, A., Legrand, M., Preunkert, S., Frey, M., Loisil, R., Gil Roca, J., Jourdain, B., King, M.D., France, J.L., Ancellet, G., TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), British Antarctic Survey (BAS), Natural Environment Research Council (NERC), Division technique INSU/SDU (DTI), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Department of Earth Sciences [Egham], Royal Holloway [University of London] (RHUL), Institut Polaire Français-Paul EmileVictor (IPEV) within programs No. 414 and 903. M. D. Kingand J. L. France wish to thank NERC (NE/F0004796/1 andNE/F0104788) and NERC FSF (555.0608 and 584.0609)., ANR-09-BLAN-0226,OPALE,Oxidant Production over Antarctica Land and its Export(2009), ANR-10-LABX-100-01/10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ANR-09-BLAN-0226,OPALE(2009), ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
lcsh:Chemistry, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], lcsh:QD1-999, lcsh:Physics, lcsh:QC1-999
Abstract

Concentrations of OH radicals and the sum of peroxy radicals, RO2, were measured in the boundary layer for the first time on the East Antarctic Plateau at the Concordia Station (Dome C, 75.10° S, 123.31° E) during the austral summer 2011/2012. The median concentrations of OH and RO2 radicals were 3.1 × 106 molecule cm−3 and 9.9 × 106 molecule cm−3, respectively. These values are comparable to those observed at the South Pole, confirming that the elevated oxidative capacity of the Antarctic atmospheric boundary layer found at the South Pole is not restricted to the South Pole but common over the high Antarctic plateau. At Concordia, the concentration of radicals showed distinct diurnal profiles with the median maximum of 5.2 × 106 molecule cm−3 at 11:00 and the median minimum of 1.1 × 106 molecule cm−3 at 01:00 for OH radicals and 1.7 × 108 molecule cm−3 and 2.5 × 107 molecule cm−3 for RO2 radicals at 13:00 and 23:00, respectively (all times are local times). Concurrent measurements of O3, HONO, NO, NO2, HCHO and H2O2 demonstrated that the major primary source of OH and RO2 radicals at Dome C was the photolysis of HONO, HCHO and H2O2, with the photolysis of HONO contributing ~75% of total primary radical production. However, photochemical modelling with accounting for all these radical sources overestimates the concentrations of OH and RO2 radicals by a factor of 2 compared to field observations. Neglecting the net OH production from HONO in the photochemical modelling results in an underestimation of the concentrations of OH and RO2 radicals by a factor of 2. To explain the observations of radicals in this case an additional source of OH equivalent to about (25–35)% of measured photolysis of HONO is required. Even with a factor of 5 reduction in the concentrations of HONO, the photolysis of HONO represents the major primary radical source at Dome C. To account for a possibility of an overestimation of NO2 observed at Dome C the calculations were also performed with NO2 concentrations estimated by assuming steady-state NO2 / NO ratios. In this case the net radical production from the photolysis of HONO should be reduced by a factor of 5 or completely removed based on the photochemical budget of OH or 0-D modelling, respectively. Another major factor leading to the large concentration of OH radicals measured at Dome C was large concentrations of NO molecules and fast recycling of peroxy radicals to OH radicals.

Published
2014
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37. Multi-model evaluation of short-lived pollutant distributions over east Asia during summer 2008

Author

Quennehen, B., primary, Raut, J.-C., additional, Law, K. S., additional, Daskalakis, N., additional, Ancellet, G., additional, Clerbaux, C., additional, Kim, S.-W., additional, Lund, M. T., additional, Myhre, G., additional, Olivié, D. J. L., additional, Safieddine, S., additional, Skeie, R. B., additional, Thomas, J. L., additional, Tsyro, S., additional, Bazureau, A., additional, Bellouin, N., additional, Hu, M., additional, Kanakidou, M., additional, Klimont, Z., additional, Kupiainen, K., additional, Myriokefalitakis, S., additional, Quaas, J., additional, Rumbold, S. T., additional, Schulz, M., additional, Cherian, R., additional, Shimizu, A., additional, Wang, J., additional, Yoon, S.-C., additional, and Zhu, T., additional

Published
2016
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38. Continental pollution in the Western Mediterranean basin: large variability of the aerosol single scattering albedo and influence on the direct shortwave radiative effect

Author

Di Biagio, C., primary, Formenti, P., additional, Doppler, L., additional, Gaimoz, C., additional, Grand, N., additional, Ancellet, G., additional, Attié, J.-L., additional, Bucci, S., additional, Dubuisson, P., additional, Fierli, F., additional, Mallet, M., additional, and Ravetta, F., additional

Published
2016
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39. Overview of the Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative Forcing on the Mediterranean Climate (ChArMEx/ADRIMED) summer 2013 campaign

Author

Mallet, M., primary, Dulac, F., additional, Formenti, P., additional, Nabat, P., additional, Sciare, J., additional, Roberts, G., additional, Pelon, J., additional, Ancellet, G., additional, Tanré, D., additional, Parol, F., additional, Denjean, C., additional, Brogniez, G., additional, di Sarra, A., additional, Alados-Arboledas, L., additional, Arndt, J., additional, Auriol, F., additional, Blarel, L., additional, Bourrianne, T., additional, Chazette, P., additional, Chevaillier, S., additional, Claeys, M., additional, D'Anna, B., additional, Derimian, Y., additional, Desboeufs, K., additional, Di Iorio, T., additional, Doussin, J.-F., additional, Durand, P., additional, Féron, A., additional, Freney, E., additional, Gaimoz, C., additional, Goloub, P., additional, Gómez-Amo, J. L., additional, Granados-Muñoz, M. J., additional, Grand, N., additional, Hamonou, E., additional, Jankowiak, I., additional, Jeannot, M., additional, Léon, J.-F., additional, Maillé, M., additional, Mailler, S., additional, Meloni, D., additional, Menut, L., additional, Momboisse, G., additional, Nicolas, J., additional, Podvin, T., additional, Pont, V., additional, Rea, G., additional, Renard, J.-B., additional, Roblou, L., additional, Schepanski, K., additional, Schwarzenboeck, A., additional, Sellegri, K., additional, Sicard, M., additional, Solmon, F., additional, Somot, S., additional, Torres, B, additional, Totems, J., additional, Triquet, S., additional, Verdier, N., additional, Verwaerde, C., additional, Waquet, F., additional, Wenger, J., additional, and Zapf, P., additional

Published
2016
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40. Multi-model study of chemical and physical controls on transport of anthropogenic and biomass burning pollution to the Arctic

Author

Monks, S. A., Arnold, S. R., Emmons, L. K., Law, K. S., Turquety, S., Duncan, B. N., Flemming, J., Huijnen, V., Tilmes, S., Langner, Joakim, Mao, J., Long, Y., Thomas, J. L., Steenrod, S. D., Raut, J. C., Wilson, C., Chipperfield, M. P., Diskin, G. S., Weinheimer, A., Schlager, H., Ancellet, G., Monks, S. A., Arnold, S. R., Emmons, L. K., Law, K. S., Turquety, S., Duncan, B. N., Flemming, J., Huijnen, V., Tilmes, S., Langner, Joakim, Mao, J., Long, Y., Thomas, J. L., Steenrod, S. D., Raut, J. C., Wilson, C., Chipperfield, M. P., Diskin, G. S., Weinheimer, A., Schlager, H., and Ancellet, G.

Abstract

Using observations from aircraft, surface stations and a satellite instrument, we comprehensively evaluate multi-model simulations of carbon monoxide (CO) and ozone (O-3) in the Arctic and over lower latitude emission regions, as part of the POLARCAT Model Inter-comparison Project (POLMIP). Evaluation of 11- atmospheric models with chemistry shows that they generally underestimate CO throughout the Arctic troposphere, with the largest biases found during winter and spring. Negative CO biases are also found throughout the Northern Hemisphere, with multi-model mean gross errors (9-12%) suggesting models perform similarly over Asia, North America and Europe. A multi-model annual mean tropospheric OH (10.8 +/- 0.6 x 10(5) molec cm(-3)) is found to be slightly higher than previous estimates of OH constrained by methyl chloroform, suggesting negative CO biases in models may be improved through better constraints on OH. Models that have lower Arctic OH do not always show a substantial improvement in their negative CO biases, suggesting that Arctic OH is not the dominant factor controlling the Arctic CO burden in these models. In addition to these general biases, models do not capture the magnitude of CO enhancements observed in the Arctic free troposphere in summer, suggesting model errors in the simulation of plumes that are transported from anthropogenic and biomass burning sources at lower latitudes. O-3 in the Arctic is also generally underestimated, particularly at the surface and in the upper troposphere. Summer O-3 comparisons over lower latitudes show several models overestimate upper tropospheric concentrations. Simulated CO, O-3 and OH all demonstrate a substantial degree of inter-model variability. Idealised CO-like tracers are used to quantitatively compare the impact of inter-model differences in transport and OH on CO in the Arctic troposphere. The tracers show that model differences in transport from Europe in winter and from Asia throughout the year are imp

Published
2015
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42. Analysis of IASI tropospheric O3 data over the Arctic during POLARCAT campaigns in 2008

Author

Pommier, M., Clerbaux, C., Law, K. S., Ancellet, G., Bernath, P., Coheur, P.-F., Hadji-Lazaro, J., Hurtmans, D., Nédélec, P., Paris, J.-D., Ravetta, F., Ryerson, T. B., Schlager, Hans, Weinheimer, A. J., TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Department of Chemistry [York, UK], University of York [York, UK], Laboratoire d'aérologie (LAERO), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), ICOS-RAMCES (ICOS-RAMCES), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), DLR Institut für Physik der Atmosphäre (IPA), Deutsches Zentrum für Luft- und Raumfahrt [Oberpfaffenhofen-Wessling] (DLR), National Center for Atmospheric Research [Boulder] (NCAR), Laboratoire d'aérologie (LA), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Université Toulouse III - Paul Sabatier (UT3)

Subjects
Environnement et pollution, lcsh:Chemistry, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], ozone, IASI satellite, Spectroscopie [électromagnétisme, optique, acoustique], Aéronomie, lcsh:QD1-999, Télédétection, Chimie, lcsh:Physics, lcsh:QC1-999, air chemistry
Abstract

Ozone data retrieved in the Arctic region from infrared radiance spectra recorded by the Infrared Atmospheric Sounding Interferometer (IASI) on board the MetOp-A European satellite are presented. They are compared with in situ and lidar observations obtained during a series of aircraft measurement campaigns as part of the International Polar Year POLARCAT activities in spring and summer 2008. Different air masses were sampled during the campaigns including clean air, polluted plumes originating from anthropogenic sources, forest fire plumes from the three northern continents, and stratospheric-influenced air masses. The comparison between IASI O 3 [0-8 km], [0-12 km] partial columns and profiles with collocated aircraft observations is achieved by taking into account the different sensitivity and geometry of the sounding instruments. A detailed analysis is provided and the agreement is discussed in terms of vertical sensitivity and surface properties at the location of the observations. Overall, IASI O3 profiles are found to be in relatively good agreement with smoothed in situ and lidar profiles in the free troposphere with differences of less than 40% (25% over sea for both seasons) and 10%, respectively. The correlation between IASI O 3 retrieved partial columns and the smoothed aircraft partial columns is good with DC-8 in situ data in spring over North America (r= Combining double low line 0.68), and over Greenland with ATR-42 lidar measurements in summer (r= Combining double low line 0.67). Correlations with other data are less significant highlighting the difficulty of IASI to capture precisely the O 3 variability in the Arctic upper troposphere and lower stratosphere (UTLS). This is particularly noted in comparison with the [0-12 km] partial columns. The IASI [0-8 km] partial columns display a low negative bias (by less than 26% over snow) compared to columns derived from in situ measurements. Despite the relatively high biases of the IASI retrievals in the Arctic UTLS, our analysis shows that IASI can be used to identify, using O 3/CO ratios, stratospheric intrusions. © 2012 Author(s)., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2012
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43. Ozone trends at remote surface stations in France from the PAES network

Author

Gheusi, F., Colomb, A., Ancellet, G., CODDEVILLE, P., Athier, G., Pichon, J., Tournois, G., SAUVAGE, S., Laboratoire d'aérologie (LA), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Paris (UP)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut de biologie et chimie des protéines [Lyon] (IBCP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Analyse et environnement (LAE), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[INFO]Computer Science [cs], ComputingMilieux_MISCELLANEOUS
Abstract

International audience; abstract simple

Published
2011

44. Airborne DOAS measurements in Arctic: vertical distributions of aerosol extinction coefficient and NO2 concentration

Author

Merlaud, A., Van Roozendael, M., Theys, N., Fayt, C., Hermans, C., Quennehen, B., Schwarzenboeck, A., Ancellet, G., Pommier, M, Pelon, J., Burkhart, John Faulkner, Stohl, Andreas, De Maziere, M, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Laboratoire de météorologie physique (LaMP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Norwegian Institute for Air Research (NILU), and Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)

Subjects
lcsh:Chemistry, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Azote Dioxide, Arctic, lcsh:QD1-999, Differential Optical Absorption Spectroscopy, Troposphere, POLARCAT, DOAS instrument, lcsh:Physics, lcsh:QC1-999
Abstract

We report on airborne Differential Optical Absorption Spectroscopy (DOAS) measurements of aerosol extinction and NO2 tropospheric profiles performed off the North coast of Norway in April 2008. The DOAS instrument was installed on the Safire ATR-42 aircraft during the POLARCAT-France spring campaign and recorded scattered light spectra in near-limb geometry using a scanning telescope. We use O4 slant column measurements to derive the aerosol extinction at 360 nm. Regularization is based on the maximum a posteriori solution, for which we compare a linear and a logarithmic approach. The latter inherently constrains the solution to positive values and yields aerosol extinction profiles more consistent with independently measured size distributions. We present results from two soundings performed on 8 April 2008 above 71° N, 22° E and on 9 April 2008 above 70° N, 17.8° E. The first profile shows aerosol extinction and NO2 in the marine boundary layer with respective values of 0.04 ± 0.005 km−1 and 1.9 ± 0.3 × 109 molec cm−3. A second extinction layer of 0.01 ± 0.003 km−1 is found at 4 km altitude where the NO2 concentration is 0.32 ± 0.2 × 109 molec cm−3. During the second sounding, clouds prevent retrieval of profile parts under 3 km altitude but a layer with enhanced extinction (0.025 ± 0.005 km−1) and NO2 (1.95 ± 0.2 × 109 molec cm−3) is clearly detected at 4 km altitude. From CO and ozone in-situ measurements complemented by back-trajectories, we interpret the measurements in the free troposphere as, for the first sounding, a mix between stratospheric and polluted air from Northern Europe and for the second sounding, polluted air from Central Europe containing NO2. Considering the boundary layer measurements of the first flight, modeled source regions indicate closer sources, especially the Kola Peninsula smelters, which can explain the NO2 enhancement not correlated with a CO increase at the same altitude.

Published
2011
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47. Continental pollution in the western Mediterranean basin: vertical profiles of aerosol and trace gases measured over the sea during TRAQA 2012 and SAFMED 2013

Author

Di Biagio, C., primary, Doppler, L., additional, Gaimoz, C., additional, Grand, N., additional, Ancellet, G., additional, Raut, J.-C., additional, Beekmann, M., additional, Borbon, A., additional, Sartelet, K., additional, Attié, J.-L., additional, Ravetta, F., additional, and Formenti, P., additional

Published
2015
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48. Overview of the Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative Forcing on the Mediterranean Climate (ChArMEx/ADRIMED) summer 2013 campaign

Author

Mallet, M., primary, Dulac, F., additional, Formenti, P., additional, Nabat, P., additional, Sciare, J., additional, Roberts, G., additional, Pelon, J., additional, Ancellet, G., additional, Tanré, D., additional, Parol, F., additional, di Sarra, A., additional, Alados, L., additional, Arndt, J., additional, Auriol, F., additional, Blarel, L., additional, Bourrianne, T., additional, Brogniez, G., additional, Chazette, P., additional, Chevaillier, S., additional, Claeys, M., additional, D'Anna, B., additional, Denjean, C., additional, Derimian, Y., additional, Desboeufs, K., additional, Di Iorio, T., additional, Doussin, J.-F., additional, Durand, P., additional, Féron, A., additional, Freney, E., additional, Gaimoz, C., additional, Goloub, P., additional, Gómez-Amo, J. L., additional, Granados-Muñoz, M. J., additional, Grand, N., additional, Hamonou, E., additional, Jankowiak, I., additional, Jeannot, M., additional, Léon, J.-F., additional, Maillé, M., additional, Mailler, S., additional, Meloni, D., additional, Menut, L., additional, Momboisse, G., additional, Nicolas, J., additional, Podvin, J., additional, Pont, V., additional, Rea, G., additional, Renard, J.-B., additional, Roblou, L., additional, Schepanski, K., additional, Schwarzenboeck, A., additional, Sellegri, K., additional, Sicard, M., additional, Solmon, F., additional, Somot, S., additional, Torres, B., additional, Totems, J., additional, Triquet, S., additional, Verdier, N., additional, Verwaerde, C., additional, Wenger, J., additional, and Zapf, P., additional

Published
2015
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49. Multi-model evaluation of short-lived pollutant distributions over East Asia during summer 2008

Author

Quennehen, B., primary, Raut, J.-C., additional, Law, K. S., additional, Ancellet, G., additional, Clerbaux, C., additional, Kim, S.-W., additional, Lund, M. T., additional, Myhre, G., additional, Olivié, D. J. L., additional, Safieddine, S., additional, Skeie, R. B., additional, Thomas, J. L., additional, Tsyro, S., additional, Bazureau, A., additional, Bellouin, N., additional, Daskalakis, N., additional, Hu, M., additional, Kanakidou, M., additional, Klimont, Z., additional, Kupiainen, K., additional, Myriokefalitakis, S., additional, Quaas, J., additional, Rumbold, S. T., additional, Schulz, M., additional, Cherian, R., additional, Shimizu, A., additional, Wang, J., additional, Yoon, S.-C., additional, and Zhu, T., additional

Published
2015
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