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309 results on '"Godin-Beekmann, S."'

51. Validation of Aura Microwave Limb Sounder Ozone by Ozonesonde and Lidar Measurements

Author

Jiang, Y., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., Mcdermid, I. S., Godin Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König Langlo, G., Kyro, E., Laneve, Giovanni, and Thompson, A.

Subjects
validation, ozone, ozonesonde, MLS, Aura
Published
2007

52. Arctic winter 2005: Implications for stratospheric ozone loss and climate change

Author

Rex, M. Salawitch, R.J. Deckelmann, H. von der Gathen, P. Harris, N.R.P. Chipperfield, M.P. Naujokat, B. Reimer, E. Allaart, M. Andersen, S.B. Bevilacqua, R. Braathen, G.O. Claude, H. Davies, J. De Backer, H. Dier, H. Dorokhov, V. Fast, H. Gerding, M. Godin-Beekmann, S. Hoppel, K. Johnson, B. Kyrö, E. Litynska, Z. Moore, D. Nakane, H. Parrondo, M.C. Risley Jr., A.D. Skrivankova, P. Stübi, R. Viatte, P. Yushkov, V. Zerefos, C.

Abstract

The Arctic polar vortex exhibited widespread regions of low temperatures during the winter of 2005, resulting in significant ozone depletion by chlorine and bromine species. We show that chemical loss of column ozone (ΔO3) and the volume of Arctic vortex air cold enough to support the existence of polar stratospheric clouds (VPSC) both exceed levels found for any other Arctic winter during the past 40 years. Cold conditions and ozone loss in the lowermost Arctic stratosphere (e.g., between potential temperatures of 360 to 400 K) were particularly unusual compared to previous years. Measurements indicate ΔO3 = 121 ± 20 DU and that ΔO3 versus VPSC lies along an extension of the compact, near linear relation observed for previous Arctic winters. The maximum value of VPSC during five to ten year intervals exhibits a steady, monotonic increase over the past four decades, indicating that the coldest Arctic winters have become significantly colder, and hence are more conducive to ozone depletion by anthropogenic halogens. Copyright 2006 by the American Geophysical Union.

Published
2006

53. The NDSC Ozone and Temperature LIDAR Algorithm Intercomparison Initiative (A2I): Project Overview

Author

Leblanc, T., Mcdermid, I. S., Gathen, P., Müller, M., Immler, F., Schrems, O., Stebel, K., Hansen, G., Steinbrecht, W., Claude, H., Pazmino, A., Godin-Beekmann, S., Ancellet, G., Baray, J. -L, Bencherif, H., Meijer, Y., Swart, D., Twigg, L., Mcgee, T., JEFFREY P. THAYER, Livingston, J., Keckhut, P., Hauchecorne, A., Barnes, J. E., Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Norsk Institutt for Luftforskning (NILU), Deutscher Wetterdienst [Offenbach] (DWD), 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), Laboratoire de physique de l'atmosphère (LPA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), National Institute for Public Health and the Environment [Bilthoven] (RIVM), NASA Goddard Space Flight Center (GSFC), SRI International [Menlo Park] (SRI), Mauna Loa Observatory (MLO), ESRL Global Monitoring Laboratory [Boulder] (GML), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA)-NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA), and Gelsomina Pappalardo and Aldo Amodeo

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Abstract

In September 2003, the Lidar Working Group (LWG) of the Network for Detection of Stratospheric Change (NDSC) initiated an extensive project to compare the ozone and temperature algorithms used within NDSC. This initiative, referred to later as Algorithm Intercomparison Initiative (A2I), uses simulated lidar signals to test and compare various parts of the ozone and temperature lidar algorithms. In addition to the fact that it meets the requirement of the NDSC protocols, this exercise allows the detailed assessment, by all the participants, of some of the sources and magnitudes of various uncertainties associated with the algorithms, and/or with the theoretical assumptions made in these algorithms. The outcome of the A2I is to try to find common grounds in the way ozone and temperature can be retrieved in order to reduce and possibly eradicate discrepancies due to algorithm issues alone. Specific issues such as homogenizing the choice of Rayleigh extinction cross-sections, ozone absorption cross-sections, a priori information, and the definition of the vertical resolutions are among the primary targets of the A2I outcome.

Published
2004

54. Pole-to-pole validation of Envisat GOMOS ozone profiles using data from ground-based and balloon sonde measurements

Author

Meijer, Y.J., Swart, D.P.J., Allaart, M., Andersen, S.B., Bodeker, G., Boyd, I., Braathen, G., Calisesi, Y., Claude, H., Dorokhov, V., Gathen, von der, P., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H.M., Koelemeijer, R.B.A., Kois, B., Koopman, R.M., Kopp, G., Lambert, J.-C., Leblanc, T., McDermid, I.S., Pal, S., Schets, H., Stübi, R., Suortti, T., Visconti, G., Yela, M., National Institute of Public Health and the Environment (NIPHE), Royal Netherlands Meteorological Institute (KNMI), Danish Meteorological Institute (DMI), National Institute of Water and Atmospheric Research [Auckland] (NIWA), Department of Astronomy [Amherst], University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS)-University of Massachusetts System (UMASS), Norwegian Institute for Air Research (NILU), Institute of Applied Physics [Bern] (IAP), University of Bern, Deutscher Wetterdienst [Offenbach] (DWD), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Alfred Wegener Institute for Polar and Marine Research (AWI), Instituto Nacional de Técnica Aeroespacial (INTA), 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), Finnish Meteorological Institute (FMI), Eindhoven University of Technology [Eindhoven] (TU/e), Institute of Meteorology and Water Management (IMGW-PIB), Earth Observation Programmes Directorate [Frascati], Agence Spatiale Européenne = European Space Agency (ESA), Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT), Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Meteorological Service of Canada (MSC), Environment and Climate Change Canada, Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), University of L'Aquila [Italy] (UNIVAQ), and Fluids and Flows

Subjects
remote sensing, Envisat, [SDU]Sciences of the Universe [physics], stratosphere, ozone profile, Earth Science, GOMOS
Abstract

International audience; In March 2002 the European Space Agency (ESA) launched the polar-orbiting environmental satellite Envisat. One of its nine instruments is the Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument, which is a medium-resolution stellar occultation spectrometer measuring vertical profiles of ozone. In the first year after launch a large group of scientists performed additional measurements and validation activities to assess the quality of Envisat observations. In this paper, we present validation results of GOMOS ozone profiles from comparisons to microwave radiometer, balloon ozonesonde, and lidar measurements worldwide. Thirty-one instruments/launch sites at twenty-five stations ranging from the Arctic to the Antarctic joined in this activity. We identified 6747 collocated observations that were performed within an 800-km radius and a maximum 20-hour time difference of a satellite observation, for the period between 1 July 2002 and 1 April 2003. The GOMOS data analyzed here have been generated with a prototype processor that corresponds to version 4.02 of the operational GOMOS processor. The GOMOS data initially contained many obviously unrealistic values, most of which were successfully removed by imposing data quality criteria. Analyzing the effect of these criteria indicated, among other things, that for some specific stars, only less than 10% of their occultations yield an acceptable profile. The total number of useful collocated observations was reduced to 2502 because of GOMOS data unavailability, the imposed data quality criteria, and lack of altitude overlap. These collocated profiles were compared, and the results were analyzed for possible dependencies on several geophysical (e.g., latitude) and GOMOS observational (e.g., star characteristics) parameters. We find that GOMOS data quality is strongly dependent on the illumination of the limb through which the star is observed. Data measured under bright limb conditions, and to a certain extent also in twilight limb, should be used with caution, as their usability is doubtful. In dark limb the GOMOS data agree very well with the correlative data, and between 14- and 64-km altitude their differences only show a small (2.5-7.5%) insignificant negative bias with a standard deviation of 11-16% (19-63 km). This conclusion was demonstrated to be independent of the star temperature and magnitude and the latitudinal region of the GOMOS observation, with the exception of a slightly larger bias in the polar regions at altitudes between 35 and 45 km.

Published
2004
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55. Ozone loss rates over the Arctic 2002/03 and Antarctic 2003 measured with the Match approach

Author

Streibel, M., von der Gathen, P., Rex, M., Deckelmann, H., Harris, N., Braathen, G., Chipperfield, M., Millard, G., Reimer, E., Alfier, R., Allaart, M., Andersen, S., Araujo, J., Balis, D., Billet, O., Cambridge, C., Claude, H., Colwell, S., Davis, J., De Backer, H., Deshler, T., Dier, H., Dorokhov, V., Easson, J., Fast, H., Gerding, M., Ginzburg, M., Godin-Beekmann, S., Johnson, B., Karhu, J., Klekociuk, A., Kyrö, E., Moore, D., Moran, E., Nagai, T., Nakane, H., Parrondo, C., Ravegnani, F., Roscoe, H., Sato, K., Shanklin, J., Skrivankova, P., Stübi, R., Tripathi, O., Varotsos, C., Vialle, C., Viatte, P., Yamanouchi, T., Yela, M., Yoshizawa, N., Yushkov, V., and Zerefos, C.

Abstract

To improve our understanding of wintertime polar ozone losses, two ozonesonde Match campaigns were performed. The first one was carried out in the Arctic winter 2002/03. About 450 co-ordinated ozonesondes were launched from late November 2002 to March 2003. Temperatures low enough for the formation of polar stratospheric clouds (PSC) occurred already in the second half of November. At 475 K the Match analysis shows increasing ozone loss rates from early December until the second half of January with peaking loss rates of 35 ppbv/day. Afterwards the rate of ozone loss decreased and stopped after a month. Throughout the whole winter we find accumulated ozone loss of about 1.5 ppmv at the 500 K isentrope and approximately 60 DU in the total ozone column, which is about half of the maximum loss found in past winters. From June to October 2003 an Antarctic Match campaign was carried out for the first time. About 400 sondes were launched by 9 stations. Ozone loss rates of up to 75 ppbv/day were found inside the polar vortex at the 475 K potential temperature level during the first half of September. The timing of the fastest ozone loss coincides with the return of sunlight to the vortex after the Antarctic winter. During the whole time period temperatures were low enough for PSCs, including ice clouds, to form. Results for the potential temperature range between 400 K and 550 K will be presented.

Published
2004

57. Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2

Author

Keppens, A., primary, Lambert, J.-C., additional, Granville, J., additional, Miles, G., additional, Siddans, R., additional, van Peet, J. C. A., additional, van der A, R. J., additional, Hubert, D., additional, Verhoelst, T., additional, Delcloo, A., additional, Godin-Beekmann, S., additional, Kivi, R., additional, Stübi, R., additional, and Zehner, C., additional

Published
2014
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60. Drift-corrected trends and periodic variations in MIPAS IMK/IAA ozone measurements

Author

Eckert, E., primary, von Clarmann, T., additional, Kiefer, M., additional, Stiller, G. P., additional, Lossow, S., additional, Glatthor, N., additional, Degenstein, D. A., additional, Froidevaux, L., additional, Godin-Beekmann, S., additional, Leblanc, T., additional, McDermid, S., additional, Pastel, M., additional, Steinbrecht, W., additional, Swart, D. P. J., additional, Walker, K. A., additional, and Bernath, P. F., additional

Published
2014
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61. Grid Technology and Neural Networks for the Analysis of Atmospheric Ozone from Satellite Data

Author

Stefano Casadio, Del Frate, F., Godin-Beekmann, S., Petitdidier, M., Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Università degli Studi di Roma Tor Vergata [Roma], 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), Centre d'étude des environnements terrestre et planétaires (CETP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), R.A. Harris, and Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Abstract

International audience; The problem of the retrieval of spatial ozone distribution from radiance measurements collected by the GOME (Global Ozone Monitoring Experiment) instrument on board of ERS-2 satellite is addressed. We propose a neural network approach for the implementation of the inversion method in a Grid technology environment

Published
2003

62. Stratospheric aerosols from the Sarychev volcano eruption in the 2009 Arctic summer

Author

Jégou, Fabrice, Berthet, Gwenaël, Brogniez, C., Renard, J.-B., Francois, P., Haywood, J., Jones, A., Bourgeois, Q., Lurton, T., Auriol, F., Godin-Beekmann, S., Guimbaud, C., Krysztofiak, Gisèle, Gaubicher, Betty, Chartier, M., Clarisse, Lieven, Clerbaux, C., Balois, J., Verwaerde, C., Daugeron, D., Jégou, Fabrice, Berthet, Gwenaël, Brogniez, C., Renard, J.-B., Francois, P., Haywood, J., Jones, A., Bourgeois, Q., Lurton, T., Auriol, F., Godin-Beekmann, S., Guimbaud, C., Krysztofiak, Gisèle, Gaubicher, Betty, Chartier, M., Clarisse, Lieven, Clerbaux, C., Balois, J., Verwaerde, C., and Daugeron, D.

Abstract

Aerosols from the Sarychev volcano eruption (Kuril Islands, northeast of Japan) were observed in the Arctic lower stratosphere a few days after the strongest SO2 injection which occurred on 15 and 16 June 2009. From the observations provided by the Infrared Atmospheric Sounding Interferometer (IASI) an estimated 0.9 Tg of sulphur dioxide was injected into the upper troposphere and lower stratosphere (UTLS). The resultant stratospheric sulphate aerosols were detected from satellites by the Optical Spectrograph and Infrared Imaging System (OSIRIS) limb sounder and by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) and from the surface by the Network for the Detection of Atmospheric Composition Changes (NDACC) lidar deployed at OHP (Observatoire de Haute-Provence, France). By the first week of July the aerosol plume had spread out over the entire Arctic region. The Sarychev-induced stratospheric aerosol over the Kiruna region (north of Sweden) was measured by the Stratospheric and Tropospheric Aerosol Counter (STAC) during eight balloon flights planned in August and September 2009. During this balloon campaign the Micro Radiomètre Ballon (MicroRADIBAL) and the Spectroscopie d'Absorption Lunaire pour l'Observation des Minoritaires Ozone et NOx (SALOMON) remote-sensing instruments also observed these aerosols. Aerosol concentrations returned to near-background levels by spring 2010. The effective radius, the surface area density (SAD), the aerosol extinction, and the total sulphur mass from STAC in situ measurements are enhanced with mean values in the range 0.15-0.21 μm, 5.5-14.7 μm2 cm-3, 5.5-29.5 × 10-4 km-1, and 4.9-12.6 × 10-10 kg[S] kg-1[air], respectively, between 14 km and 18 km. The observed and modelled e-folding time of sulphate aerosols from the Sarychev eruption is around 70-80 days, a value much shorter than the 12-14 months calculated for aerosols from the 1991 eruption of Mt Pinatubo. The OSIRIS stratospheric aerosol optical depth (AOD) at 7, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2013

63. Record-breaking ozone loss in the Arctic winter 2010/2011 : comparison with 1996/1997

Author

Kuttippurath, J., Godin-Beekmann, S., Lefevre, F., Nikulin, Grigory, Santee, M. L., Froidevaux, L., Kuttippurath, J., Godin-Beekmann, S., Lefevre, F., Nikulin, Grigory, Santee, M. L., and Froidevaux, L.

Abstract

We present a detailed discussion of the chemical and dynamical processes in the Arctic winters 1996/1997 and 2010/2011 with high resolution chemical transport model (CTM) simulations and space-based observations. In the Arctic winter 2010/2011, the lower stratospheric minimum temperatures were below 195K for a record period of time, from December to mid-April, and a strong and stable vortex was present during that period. Simulations with the Mimosa-Chim CTM show that the chemical ozone loss started in early January and progressed slowly to 1 ppmv (parts per million by volume) by late February. The loss intensified by early March and reached a record maximum of similar to 2.4 ppmv in the late March-early April period over a broad altitude range of 450-550 K. This coincides with elevated ozone loss rates of 2-4 ppbv sh(-1) (parts per billion by volume/sunlit hour) and a contribution of about 30-55% and 30-35% from the ClO-ClO and ClO-BrO cycles, respectively, in late February and March. In addition, a contribution of 30-50% from the HOx cycle is also estimated in April. We also estimate a loss of about 0.7-1.2 ppmv contributed (75%) by the NOx cycle at 550-700 K. The ozone loss estimated in the partial column range of 350-550K exhibits a record value of similar to 148DU (Dobson Unit). This is the largest ozone loss ever estimated in the Arctic and is consistent with the remarkable chlorine activation and strong denitrification (40-50%) during the winter, as the modeled ClO shows similar to 1.8 ppbv in early January and similar to 1 ppbv in March at 450-550 K. These model results are in excellent agreement with those found from the Aura Microwave Limb Sounder observations. Our analyses also show that the ozone loss in 2010/2011 is close to that found in some Antarctic winters, for the first time in the observed history. Though the winter 1996/1997 was also very cold in March-April, the temperatures were higher in December-February, and, therefore, chlorine activation

Published
2012
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64. Record Arctic ozone loss in spring 2011 compared with Antarctic ozone hole conditions

Author

Rex, Markus, Wohltmann, Ingo, Lehmann, Ralph, Deckelmann, Holger, von der Gathen, Peter, Balis, D., De Backer, H., Davis, J., Dorokhov, V., Eriksen, P., Gerding, M., Gernandt, Hartwig, Godin-Beekmann, S., Hardadottic, J., Jepsen, N., Johnson, B., Kivi, R., Kyrö, E., Larsen, N., Livesey, N. J., Makshtas, A., Manney, G. L., McElroy, C. T., Moore, D., Nakajima, H., Parrondo, M., Santee, M. L., Skrivankova, P., Stübi, R., Tarasick, D. W., Varghese, S., Varotsos, C., Vömel, H., Walker, K. A., Yushkov, V., Zerefos, C., Zinoviev, Nikita S., Rex, Markus, Wohltmann, Ingo, Lehmann, Ralph, Deckelmann, Holger, von der Gathen, Peter, Balis, D., De Backer, H., Davis, J., Dorokhov, V., Eriksen, P., Gerding, M., Gernandt, Hartwig, Godin-Beekmann, S., Hardadottic, J., Jepsen, N., Johnson, B., Kivi, R., Kyrö, E., Larsen, N., Livesey, N. J., Makshtas, A., Manney, G. L., McElroy, C. T., Moore, D., Nakajima, H., Parrondo, M., Santee, M. L., Skrivankova, P., Stübi, R., Tarasick, D. W., Varghese, S., Varotsos, C., Vömel, H., Walker, K. A., Yushkov, V., Zerefos, C., and Zinoviev, Nikita S.

Abstract

The Arctic winter 2010/2011 was characterized by an unusually stable and cold polar vortex in the lower stratosphere. Meteorological data shows that conditions for the formation of polar stratospheric clouds, and hence the activation of chlorine from reservoir species through heterogeneous processes, were widespread. Values of Vpsc, a temperature based parameter that characterizes the winter average extent of such conditions were in the range of the extreme values reached in the coldest winters on record, i.e., 2000 and 2005. However, in contrast to these previous winters, when the ozone loss period was ended by major stratospheric warmings in March, in 2011 the very stable polar vortex stayed intact and cold well into April. The combination of extremely cold conditions throughout the winter with a long lived and stable vortex in spring led to record chemical destruction of ozone in the Arctic. Based on the measurements of the Match ozonesonde network and the Microwave Limb Sounder (MLS) instrument on Aura we will discuss the degree and the time evolution of this record loss and compare the Arctic ozone loss in 2011 with the range of ozone losses that occurred in early and recent Antarctic ozone holes.

Published
2012

65. Estimation of Antarctic ozone loss from ground-based total column measurements

Author

Kuttippurath, J., Goutail, F., Pommereau, J.-P., Lefevre, F., Roscoe, H.K., Pazmino, A., Feng, W., Chipperfield, M.P., Godin-Beekmann, S., Kuttippurath, J., Goutail, F., Pommereau, J.-P., Lefevre, F., Roscoe, H.K., Pazmino, A., Feng, W., Chipperfield, M.P., and Godin-Beekmann, S.

Abstract

The passive tracer method is used to estimate ozone loss from ground-based measurements in the Antarctic. A sensitivity study shows that the ozone depletion can be estimated within an accuracy of ~4%. The method is then applied to the ground-based observations from Arrival Heights, Belgrano, Concordia, Dumont d'Urville, Faraday, Halley, Marambio, Neumayer, Rothera, South Pole, Syowa, and Zhongshan for the diagnosis of ozone loss in the Antarctic. On average, the ten-day boxcar average of the vortex mean ozone column loss deduced from the ground-based stations was about 55±5% in 2005–2009. The ozone loss computed from the ground-based measurements is in very good agreement with those derived from satellite measurements (OMI and SCIAMACHY) and model simulations (REPROBUS and SLIMCAT), where the differences are within ±3–5%. The historical ground-based total ozone observations in October show that the depletion started in the late 1970s, reached a maximum in the early 1990s and stabilised afterwards due to saturation. There is no indication of ozone recovery yet. At southern mid-latitudes, a reduction of 20–50% is observed for a few days in October–November at the newly installed Rio Gallegos station. Similar depletion of ozone is also observed episodically during the vortex overpasses at Kerguelen in October–November and at Macquarie Island in July–August of the recent winters. This illustrates the significance of measurements at the edges of Antarctica.

Published
2010

66. Global validation of ENVISAT ozone profiles using lidar measurements

Author

van Gijsel, J. A. E., Swart, D. P. J., Baray, J.-L., Claude, H., Fehr, T., von der Gathen, Peter, Godin-Beekmann, S., Hansen, G. H., Leblanc, T., McDermid, I. S., Meijer, Y. J., Nakane, H., Quel, E. J., Steinbrecht, W., Strawbridge, K. B., Tatarov, B., Wolfram, E. A., van Gijsel, J. A. E., Swart, D. P. J., Baray, J.-L., Claude, H., Fehr, T., von der Gathen, Peter, Godin-Beekmann, S., Hansen, G. H., Leblanc, T., McDermid, I. S., Meijer, Y. J., Nakane, H., Quel, E. J., Steinbrecht, W., Strawbridge, K. B., Tatarov, B., and Wolfram, E. A.

Published
2009

67. Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)

Author

Burrows, J. P., Christensen, T., Dupuy, E., Walker, K. A., Kar, J., Boone, C. D., McElroy, C. T., Bernath, P. F., Drummond, J. R., Skelton, R., McLeod, S. D., Hughes, R. C., Nowlan, C. R., Dufour, D. G., Zou, J., Nichitiu, F., Strong, K., Baron, P., Bevilacqua, R. M., Blumenstock, T., Bodeker, G. E., Borsdorff, T., Bourassa, A. E., Bovensmann, H., Boyd, I. S., Bracher, Astrid, Brogniez, C., Catoire, V., Ceccherini, S., Chabrillat, S., Coffey, M. T., Cortesi, U., Davies, J., De Clercq, C., Degenstein, D. A., De Maziere, M., Demoulin, P., Dodion, J., Firanski, B., Fischer, Hubertus, Forbes, G., Froidevaux, L., Fussen, D., Gerard, P., Godin-Beekmann, S., Goutail, F., Granville, J., Griffith, D., Haley, C. S., Hannigan, J. W., Höpfner, M., Jin, J. J., Jones, A., Jones, N. B., Jucks, K., Kagawa, A., Kasai, Y., Kerzenmacher, T. E., Kleinböhl, A., Klekociuk, A. R., Kramer, I., Küllmann, H., Kuttippurath, J., Kyrölä, E., Lambert, J. C., Livesey, N. J., Llewellyn, E. J., Lloyd, N. D., Mahieu, E., Manney, G. L., Marshall, B. T., McConnell, J. C., McCormick, M. P., McDermid, I. S., McHugh, M., McLinden, C. A., Mellqvist, J., Mizutani, K., Murayama, Y., Murtagh, D. P., Oelhaf, H., Parrish, A., Petelina, S. V., Piccolo, C., Pommereau, J.-P., Randall, C. E., Robert, C., Roth, C., Russell III, J. M., Schneider, M., Senten, C., Steck, T., Strandberg, A., Strawbridge, K. B., Sussmann, R., Swart, D. P. J., Tarasick, D. W., Taylor, James, Tétard, C., Thomason, L. W., Thompson, A. M., Tully, M. B., Urban, J., Vanhellemont, F., von Clarmann, T., von der Gathen, Peter, von Savigny, C., Waters, J. W., Witte, J. C., Wolff, Martha Maria, Zawodny, J. M., Burrows, J. P., Christensen, T., Dupuy, E., Walker, K. A., Kar, J., Boone, C. D., McElroy, C. T., Bernath, P. F., Drummond, J. R., Skelton, R., McLeod, S. D., Hughes, R. C., Nowlan, C. R., Dufour, D. G., Zou, J., Nichitiu, F., Strong, K., Baron, P., Bevilacqua, R. M., Blumenstock, T., Bodeker, G. E., Borsdorff, T., Bourassa, A. E., Bovensmann, H., Boyd, I. S., Bracher, Astrid, Brogniez, C., Catoire, V., Ceccherini, S., Chabrillat, S., Coffey, M. T., Cortesi, U., Davies, J., De Clercq, C., Degenstein, D. A., De Maziere, M., Demoulin, P., Dodion, J., Firanski, B., Fischer, Hubertus, Forbes, G., Froidevaux, L., Fussen, D., Gerard, P., Godin-Beekmann, S., Goutail, F., Granville, J., Griffith, D., Haley, C. S., Hannigan, J. W., Höpfner, M., Jin, J. J., Jones, A., Jones, N. B., Jucks, K., Kagawa, A., Kasai, Y., Kerzenmacher, T. E., Kleinböhl, A., Klekociuk, A. R., Kramer, I., Küllmann, H., Kuttippurath, J., Kyrölä, E., Lambert, J. C., Livesey, N. J., Llewellyn, E. J., Lloyd, N. D., Mahieu, E., Manney, G. L., Marshall, B. T., McConnell, J. C., McCormick, M. P., McDermid, I. S., McHugh, M., McLinden, C. A., Mellqvist, J., Mizutani, K., Murayama, Y., Murtagh, D. P., Oelhaf, H., Parrish, A., Petelina, S. V., Piccolo, C., Pommereau, J.-P., Randall, C. E., Robert, C., Roth, C., Russell III, J. M., Schneider, M., Senten, C., Steck, T., Strandberg, A., Strawbridge, K. B., Sussmann, R., Swart, D. P. J., Tarasick, D. W., Taylor, James, Tétard, C., Thomason, L. W., Thompson, A. M., Tully, M. B., Urban, J., Vanhellemont, F., von Clarmann, T., von der Gathen, Peter, von Savigny, C., Waters, J. W., Witte, J. C., Wolff, Martha Maria, and Zawodny, J. M.

Abstract

This paper presents extensive {bias determination} analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from nearly 20 satellite-borne, airborne, balloon-borne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACE-FTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from 16 to 44 km, the average values of the mean relative differences are nearly all within +1 to +8%. At higher altitudes (4560 km), the ACE-FTS ozone amounts are significantly larger than those of the comparison instruments, with mean relative differences of up to +40% (about +20% on average). For the ACE-MAESTRO version 1.2 ozone data product, mean relative differences are within ±10% (average values within ±6%) between 18 and 40 km for both the sunrise and sunset measurements. At higher altitudes (~3555 km), systematic biases of opposite sign are found between the ACE-MAESTRO sunrise and sunset observations. While ozone amounts derived from the ACE-MAESTRO sunrise occultation data are often smaller than the coincident observations (with mean relative differences down to −10%), the sunset occultation profiles for ACE-MAESTRO show results that are qualitatively similar to ACE-FTS, indicating a large positive bias (mean relative differences within +10 to +30%) in the 4555 km altitude range. In contrast, there is no significant systematic difference in bias found for the ACE-FTS sunrise and sunset measurements.

Published
2009

68. Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)

Author

Jones, Nicholas B, Griffith, David W, Wolff, M, Mahieu, E, Bodeker, G, Boyd, I, De Maziere, M, Demoulin, P, Blumenstock, T, Murayama, Y., Kagawa, A., Jin, J, McElroy, Christopher, Hannigan, J, Coffey, M, Hopfner, M, Fischer, H W, Kerzenmacher, T, Kramer, I, Mellqvist, J, Sussmann, R, Strong, K, Taylor, J R, Mizutani, K, Kasai, Y, Urban, J, Murtagh, D, Dupuy, E, Catoire, V, Chabrillat, S, Baron, P, Brogniez, C, Manney, G L, Piccolo, C, Randall, C, Robert, C, Senten, C, Tetard, C, Livesey, N J, Kleinbohl, A, Godin-Beekmann, S, Borsdorff, T, Drummond, James, De Clercq, C, Lambert, J C, Cortesi, U, Jucks, K W, Boone, C, Oelhaf, H, Schneider, M, Steck, T, Walker, K A, Bernath, P, von Clarmann, T, Hughes, R, Vigouroux, C, Kuttippurath, J, Bracher, A, McConnell, J, McLinden, C, Kullmann, H, Froidevaux, L, Dodion, J, Vanhellemont, F, Burrows, J P, kar, J, Goutail, F, Dufour, D G, Zawodny, J M, Nichitiu, F, Pommereau, J-P, Nowlan, C, Fussen, D, Zou, J, Klekociuk, A R, Forbes, G, Bovensmann, H, Bevilacqua, R M, Haley, C, Ceccherini, S, McLeod, S D, Gerard, P, Skelton, R, Firanski, B, Bourassa, A E, Degenstein, D A, Davies, J, Christensen, T, Granville, J, Parrish, A, Roth, C, Waters, J W, von Savigny, C, Standberg, A, McHugh, M, Thompson, A M, Llewellyn, E J, von der Gathen, P, Tully, M B, Witte, J C, Marshall, B T, Strawbridge, K B, Kyrola, E, McCormick, M P, Swart, D P J, Lloyd, N D, Tarasick, D W, Petelina, S V, Thomason, L W, Jones, A, McDermid, I S, Jones, Nicholas B, Griffith, David W, Wolff, M, Mahieu, E, Bodeker, G, Boyd, I, De Maziere, M, Demoulin, P, Blumenstock, T, Murayama, Y., Kagawa, A., Jin, J, McElroy, Christopher, Hannigan, J, Coffey, M, Hopfner, M, Fischer, H W, Kerzenmacher, T, Kramer, I, Mellqvist, J, Sussmann, R, Strong, K, Taylor, J R, Mizutani, K, Kasai, Y, Urban, J, Murtagh, D, Dupuy, E, Catoire, V, Chabrillat, S, Baron, P, Brogniez, C, Manney, G L, Piccolo, C, Randall, C, Robert, C, Senten, C, Tetard, C, Livesey, N J, Kleinbohl, A, Godin-Beekmann, S, Borsdorff, T, Drummond, James, De Clercq, C, Lambert, J C, Cortesi, U, Jucks, K W, Boone, C, Oelhaf, H, Schneider, M, Steck, T, Walker, K A, Bernath, P, von Clarmann, T, Hughes, R, Vigouroux, C, Kuttippurath, J, Bracher, A, McConnell, J, McLinden, C, Kullmann, H, Froidevaux, L, Dodion, J, Vanhellemont, F, Burrows, J P, kar, J, Goutail, F, Dufour, D G, Zawodny, J M, Nichitiu, F, Pommereau, J-P, Nowlan, C, Fussen, D, Zou, J, Klekociuk, A R, Forbes, G, Bovensmann, H, Bevilacqua, R M, Haley, C, Ceccherini, S, McLeod, S D, Gerard, P, Skelton, R, Firanski, B, Bourassa, A E, Degenstein, D A, Davies, J, Christensen, T, Granville, J, Parrish, A, Roth, C, Waters, J W, von Savigny, C, Standberg, A, McHugh, M, Thompson, A M, Llewellyn, E J, von der Gathen, P, Tully, M B, Witte, J C, Marshall, B T, Strawbridge, K B, Kyrola, E, McCormick, M P, Swart, D P J, Lloyd, N D, Tarasick, D W, Petelina, S V, Thomason, L W, Jones, A, and McDermid, I S

Abstract

This paper presents extensive bias determination analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from nearly 20 satellite-borne, airborne, balloonborne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACEFTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from 16 to 44 km, the average values of the mean relative differences are nearly all within +1 to +8%. At higher altitudes (45¿60 km), the ACE-FTS ozone amounts are significantly larger than those of the comparison instruments, with mean relative differences of up to +40% (about +20% on average). For the ACE-MAESTRO version 1.2 ozone data product, mean relative differences are within +10% (average values within +6%) between 18 and 40 km for both the sunrise and sunset measurements. At higher altitudes (35¿55 km), systematic biases of opposite sign are found between the ACEMAESTRO sunrise and sunset observations. While ozone amounts derived from the ACE-MAESTRO sunrise occultation data are often smaller than the coincident observations (with mean relative differences down to ¿10%), the sunset occultation profiles for ACE-MAESTRO show results that are qualitatively similar to ACE-FTS, indicating a large positive bias (mean relative differences within +10 to +30%) in the 45¿55 km altitude range. In contrast, there is no significant systematic difference in bias found for the ACE-FTS sunrise and sunset measurements.

Published
2009

69. Bipolar ozone loss rates measured by ozonesonde Match campaigns during IPY

Author

von der Gathen, Peter, Rex, Markus, Deckelmann, Holger, Harris, N. R. P., Allaart, M., Andersen, S. B., Eriksen, P., Araujo, J., Claude, H., David, C., Godin-Beekmann, S., Davies, J., Fast, H., Backer, H. de, Deshler, T., Mercer, J., Dier, H., Dorokhov, V., Yushkov, V., Gerding, M., Grunow, K., Reimer, E., Johnson, B., Karhu, J. M., Kivi, R., Kyrö, E., Keckhut, P., Marchand, M., Klekociuk, A., Kois, B., Zablocki, G., König-Langlo, Gert, Moore, D., Nakajima, H., Yamanouchi, T., Parrondo, C., Yela, M., Sato, K., Skrivankova, P., Stübi, R., Viatte, P., Vik, A. F., von der Gathen, Peter, Rex, Markus, Deckelmann, Holger, Harris, N. R. P., Allaart, M., Andersen, S. B., Eriksen, P., Araujo, J., Claude, H., David, C., Godin-Beekmann, S., Davies, J., Fast, H., Backer, H. de, Deshler, T., Mercer, J., Dier, H., Dorokhov, V., Yushkov, V., Gerding, M., Grunow, K., Reimer, E., Johnson, B., Karhu, J. M., Kivi, R., Kyrö, E., Keckhut, P., Marchand, M., Klekociuk, A., Kois, B., Zablocki, G., König-Langlo, Gert, Moore, D., Nakajima, H., Yamanouchi, T., Parrondo, C., Yela, M., Sato, K., Skrivankova, P., Stübi, R., Viatte, P., and Vik, A. F.

Abstract

In the frame of the International Polar Year three ozonesonde Match campaigns have been performed, one in the Antarctic and two in the Arctic. Nine stations participated in the Antarctic campaign: Belgrano, Davis, Dome Concordia, Dumont dUrville, Marambio, McMurdo, Neumayer, South Pole and Syowa. The campaign lasted from early June to end of October 2007. Numerous polar and mid-latitude stations participated in both Arctic campaigns. The first one lasted from early January to early April 2007. The second campaign started mid of December 2007 and was ongoing mid of February. We present ozone loss rates deduced from data of all three campaigns. The ozone loss rates in the Antarctic follow in general those of the first Antarctic Match campaign in 2003 reaching 60 to 80 ppb/day in the range 450 K to 500 K during September. The uncertainty is larger compared to 2003 where maximum loss rates around 60 ppb/day were measured. The Arctic winter 2006/07 was a winter with moderate ozone losses compared to losses in former winters of the last two decades. Together with the winter 2007/08 the data add to the large Match data base currently consisting 14 Arctic and 2 Antarctic winters since 1991/92.

Published
2008

70. SI2N overview paper: ozone profile measurements: techniques, uncertainties and availability

Author

Hassler, B., primary, Petropavlovskikh, I., additional, Staehelin, J., additional, August, T., additional, Bhartia, P. K., additional, Clerbaux, C., additional, Degenstein, D., additional, Mazière, M. De, additional, Dinelli, B. M., additional, Dudhia, A., additional, Dufour, G., additional, Frith, S. M., additional, Froidevaux, L., additional, Godin-Beekmann, S., additional, Granville, J., additional, Harris, N. R. P., additional, Hoppel, K., additional, Hubert, D., additional, Kasai, Y., additional, Kurylo, M. J., additional, Kyrölä, E., additional, Lambert, J.-C., additional, Levelt, P. F., additional, McElroy, C. T., additional, McPeters, R. D., additional, Munro, R., additional, Nakajima, H., additional, Parrish, A., additional, Raspollini, P., additional, Remsberg, E. E., additional, Rosenlof, K. H., additional, Rozanov, A., additional, Sano, T., additional, Sasano, Y., additional, Shiotani, M., additional, Smit, H. G. J., additional, Stiller, G., additional, Tamminen, J., additional, Tarasick, D. W., additional, Urban, J., additional, van der A, R. J., additional, Veefkind, J. P., additional, Vigouroux, C., additional, von Clarmann, T., additional, von Savigny, C., additional, Walker, K. A., additional, Weber, M., additional, Wild, J., additional, and Zawodny, J., additional

Published
2013
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71. Maïdo observatory: a new high-altitude station facility at Reunion Island (21° S, 55° E) for long-term atmospheric remote sensing and in situ measurements

Author

Baray, J.-L., primary, Courcoux, Y., additional, Keckhut, P., additional, Portafaix, T., additional, Tulet, P., additional, Cammas, J.-P., additional, Hauchecorne, A., additional, Godin Beekmann, S., additional, De Mazière, M., additional, Hermans, C., additional, Desmet, F., additional, Sellegri, K., additional, Colomb, A., additional, Ramonet, M., additional, Sciare, J., additional, Vuillemin, C., additional, Hoareau, C., additional, Dionisi, D., additional, Duflot, V., additional, Vérèmes, H., additional, Porteneuve, J., additional, Gabarrot, F., additional, Gaudo, T., additional, Metzger, J.-M., additional, Payen, G., additional, Leclair de Bellevue, J., additional, Barthe, C., additional, Posny, F., additional, Ricaud, P., additional, Abchiche, A., additional, and Delmas, R., additional

Published
2013
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73. Maïdo observatory: a new altitude station facility at Reunion Island (21° S, 55° E) for long-term atmospheric remote sensing and in-situ measurements

Author

Baray, J.-L., primary, Courcoux, Y., additional, Keckhut, P., additional, Portafaix, T., additional, Tulet, P., additional, Cammas, J.-P., additional, Hauchecorne, A., additional, Godin-Beekmann, S., additional, De Mazière, M., additional, Hermans, C., additional, Desmet, F., additional, Sellegri, K., additional, Colomb, A., additional, Ramonet, M., additional, Sciare, J., additional, Vuillemin, C., additional, Hoareau, C., additional, Dionisi, D., additional, Duflot, V., additional, Vérèmes, H., additional, Porteneuve, J., additional, Gabarrot, F., additional, Gaudo, T., additional, Metzger, J.-M., additional, Payen, G., additional, Leclair de Bellevue, J., additional, Barthe, C., additional, Posny, F., additional, Ricaud, P., additional, Abchiche, A., additional, and Delmas, R., additional

Published
2013
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74. Stratospheric aerosols from the Sarychev volcano eruption in the 2009 Arctic summer

Author

Jégou, F., primary, Berthet, G., additional, Brogniez, C., additional, Renard, J.-B., additional, François, P., additional, Haywood, J. M., additional, Jones, A., additional, Bourgeois, Q., additional, Lurton, T., additional, Auriol, F., additional, Godin-Beekmann, S., additional, Guimbaud, C., additional, Krysztofiak, G., additional, Gaubicher, B., additional, Chartier, M., additional, Clarisse, L., additional, Clerbaux, C., additional, Balois, J. Y., additional, Verwaerde, C., additional, and Daugeron, D., additional

Published
2013
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75. Drift-corrected trends and periodic variations in MIPAS IMK/IAA ozone measurements

Author

Eckert, E., primary, von Clarmann, T., additional, Kiefer, M., additional, Stiller, G. P., additional, Lossow, S., additional, Glatthor, N., additional, Degenstein, D. A., additional, Froidevaux, L., additional, Godin-Beekmann, S., additional, Leblanc, T., additional, McDermid, S., additional, Pastel, M., additional, Steinbrecht, W., additional, Swart, D. P. J., additional, Walker, K. A., additional, and Bernath, P. F., additional

Published
2013
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78. Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and Lidar Measurements

Author

Jiang, Yong, Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König-Langlo, Gert, Kyro, E., Laneve, G., Fook, L. S., Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny, F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A., Thouret, V., Viatte, P., Vömel, H., von der Gathen, Peter, Yela, M., Zablocki, G., Jiang, Yong, Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König-Langlo, Gert, Kyro, E., Laneve, G., Fook, L. S., Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny, F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A., Thouret, V., Viatte, P., Vömel, H., von der Gathen, Peter, Yela, M., and Zablocki, G.

Published
2007

79. A trajectory-based estimate of the tropospheric ozone column using the residual method

Author

Schoeberl, M. R., Ziemke, J. R., Bojkov, B., Livesey, N., Duncan, B., Strahan, S., Froidevaux, L., Kulawik, S., Bhartia, P. K., Chandra, S., Levelt, P. F., Witte, J. C., Thompson, A. M., Cuevas, E., Redondas, A., Tarasick, D. W., Davies, J., Bodeker, G., Hansen, G., Johnson, B. J., Oltmans, S. J., Voemel, H., Allaart, M., Kelder, H., Newchurch, M., Godin-Beekmann, S., Ancellet, G., Claude, H., Andersen, S. B., Kyrö, E., Parrondos, M., Yela, M., Zablocki, G., Moore, D., Dier, H., von der Gathen, Peter, Viatte, P., Stübi, R., Calpini, B., Skrivankova, P., Dorokhov, V., De Backer, H., Schmidlin, F. J., Coetzee, G., Fujiwara, M., Thouret, V., Posny, F., Morris, G., Merrill, J., Leong, C. P., König-Langlo, Gert, Joseph, E., Schoeberl, M. R., Ziemke, J. R., Bojkov, B., Livesey, N., Duncan, B., Strahan, S., Froidevaux, L., Kulawik, S., Bhartia, P. K., Chandra, S., Levelt, P. F., Witte, J. C., Thompson, A. M., Cuevas, E., Redondas, A., Tarasick, D. W., Davies, J., Bodeker, G., Hansen, G., Johnson, B. J., Oltmans, S. J., Voemel, H., Allaart, M., Kelder, H., Newchurch, M., Godin-Beekmann, S., Ancellet, G., Claude, H., Andersen, S. B., Kyrö, E., Parrondos, M., Yela, M., Zablocki, G., Moore, D., Dier, H., von der Gathen, Peter, Viatte, P., Stübi, R., Calpini, B., Skrivankova, P., Dorokhov, V., De Backer, H., Schmidlin, F. J., Coetzee, G., Fujiwara, M., Thouret, V., Posny, F., Morris, G., Merrill, J., Leong, C. P., König-Langlo, Gert, and Joseph, E.

Published
2007

80. Comparison of polar ozone loss rates simulated by 1-D and 3-D models with Match observations in recent Antarctic and Arctic winters

Author

Tripathi, O. P., Godin-Beekmann, S., Lefèvre, F., Pazmiño, A., Hauchcorne, A., Chipperfield, M., Feng, W., Millard, G., Rex, Markus, Streibel, M., von der Gathen, Peter, Tripathi, O. P., Godin-Beekmann, S., Lefèvre, F., Pazmiño, A., Hauchcorne, A., Chipperfield, M., Feng, W., Millard, G., Rex, Markus, Streibel, M., and von der Gathen, Peter

Published
2007

81. Geophysical validation of MIPAS-ENVISAT operational ozone data

Author

Cortesi, U, Lambert, J C, De Clercq, C, Bianchini, G., Blumenstock, T, Bracher, A., Castelli, E., Catoire, V., Chance, K. V., De Maziere, M., Demoulin, P., Godin-Beekmann, S., Jones, N. B., Jucks, K., Keim, C., Kerzenmacher, T., Kuellmann, H., Kuttippurath, J., Iarlori, M., Liu, G. Y., Liu, Y., McDermid, I. S., Meijer, Y. J., Mencaraglia, F., Mikuteit, S., Oelhaf, H., Piccolo, C., Pirre, M., Raspollini, P., Ravegnani, F., Reburn, W. J., Redaelli, G., Remedios, J. J., Sembhi, H., Smale, D., Steck, T., Taddei, A., Varotsos, C., Vigouroux, C., Waterfall, A., Wetzel, G., Wood, S., Cortesi, U, Lambert, J C, De Clercq, C, Bianchini, G., Blumenstock, T, Bracher, A., Castelli, E., Catoire, V., Chance, K. V., De Maziere, M., Demoulin, P., Godin-Beekmann, S., Jones, N. B., Jucks, K., Keim, C., Kerzenmacher, T., Kuellmann, H., Kuttippurath, J., Iarlori, M., Liu, G. Y., Liu, Y., McDermid, I. S., Meijer, Y. J., Mencaraglia, F., Mikuteit, S., Oelhaf, H., Piccolo, C., Pirre, M., Raspollini, P., Ravegnani, F., Reburn, W. J., Redaelli, G., Remedios, J. J., Sembhi, H., Smale, D., Steck, T., Taddei, A., Varotsos, C., Vigouroux, C., Waterfall, A., Wetzel, G., and Wood, S.

Abstract

The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS), on-board the European ENVIronmental SATellite (ENVISAT) launched on 1 March 2002, is a middle infrared Fourier Transform spectrometer measuring the atmospheric emission spectrum in limb sounding geometry. The instrument is capable to retrieve the vertical distribution of temperature and trace gases, aiming at the study of climate and atmospheric chemistry and dynamics, and at applications to data assimilation and weather forecasting.

Published
2007

82. Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and lidar measurements

Author

Jiang, Y. B., Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., 1000000360941, Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König-Langlo, G., Kyro, E., Laneve, G., Fook, L. S., Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny, F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A., Thouret, V., Viatte, P., Vömel, H., von Der Gathen, P., Yela, M., Zablocki, G., Jiang, Y. B., Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., 1000000360941, Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König-Langlo, G., Kyro, E., Laneve, G., Fook, L. S., Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny, F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A., Thouret, V., Viatte, P., Vömel, H., von Der Gathen, P., Yela, M., and Zablocki, G.

Published
2007

83. Geophysical Validation of SCIAMACHY Limb Ozone Profiles.

Author

Brinksma, E. J., Bracher, Astrid, Lolkema, D. E., Segers, A. J., Boyd, I. S., Bramstedt, K., Claude, H., Godin-Beekmann, S., Hansen, G., Koop, G., Leblanc, T., McDermid, I. S., Meijer, Y. J., Nakane, H., Parrish, A., von Savigny, C., Swart, D. P. J., Taha, G., Piters, A. J. M., Brinksma, E. J., Bracher, Astrid, Lolkema, D. E., Segers, A. J., Boyd, I. S., Bramstedt, K., Claude, H., Godin-Beekmann, S., Hansen, G., Koop, G., Leblanc, T., McDermid, I. S., Meijer, Y. J., Nakane, H., Parrish, A., von Savigny, C., Swart, D. P. J., Taha, G., and Piters, A. J. M.

Published
2006

84. Ozone profiles in the high-latitude stratosphere and lower mesosphere measured by the Improved Limb Atmospheric Spectrometer (ILAS)-II: Comparison with other satellite sensors and ozonesondes

Author

Sugita, T., Nakajima, H., Yokota, T., Kanzawa, H., Gernandt, Hartwig, Herber, Andreas, von der Gathen, Peter, König-Langlo, Gert, Sato, K., Dorokhov, V., Yushkov, V. A., Murayama, Y., Yamamori, M., Godin-Beekmann, S., Goutail, F., Roscoe, H. K., Deshler, T., Yela, M., Taalas, P., Kyrö, E., Oltmans, S. J., Johnson, B. J., Allaart, M., Litynska, Z., Klekociuk, A., Andersen, S. B., Braathen, G. O., De Backer, H., Randall, C. E., Bevilacqua, R. M., Taha, G., Thomason, L. W., Irie, H., Ejiri, M. K., Saitoh, N., Tanaka, T., Terao, Y., Kobayashi, H., Sasano, Y., Sugita, T., Nakajima, H., Yokota, T., Kanzawa, H., Gernandt, Hartwig, Herber, Andreas, von der Gathen, Peter, König-Langlo, Gert, Sato, K., Dorokhov, V., Yushkov, V. A., Murayama, Y., Yamamori, M., Godin-Beekmann, S., Goutail, F., Roscoe, H. K., Deshler, T., Yela, M., Taalas, P., Kyrö, E., Oltmans, S. J., Johnson, B. J., Allaart, M., Litynska, Z., Klekociuk, A., Andersen, S. B., Braathen, G. O., De Backer, H., Randall, C. E., Bevilacqua, R. M., Taha, G., Thomason, L. W., Irie, H., Ejiri, M. K., Saitoh, N., Tanaka, T., Terao, Y., Kobayashi, H., and Sasano, Y.

Published
2006

85. High resolution simulation of recent Arctic and Antarctic stratospheric chemical ozone loss compared to observations

Author

Tripathi, O.-P., Godin-Beekmann, S., Lefèvre, F., Marchand, M., Pazmiño, A., Hauchecorne, A., Goutail, F., Schlager, H., Volk, C. M., Johnson, B., König-Langlo, Gert, Balestri, S., Stroh, S., Bui, T. P., Jost, H. J., Deshler, T., von der Gathen, Peter, Tripathi, O.-P., Godin-Beekmann, S., Lefèvre, F., Marchand, M., Pazmiño, A., Hauchecorne, A., Goutail, F., Schlager, H., Volk, C. M., Johnson, B., König-Langlo, Gert, Balestri, S., Stroh, S., Bui, T. P., Jost, H. J., Deshler, T., and von der Gathen, Peter

Published
2005

86. The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: a multi-instrument study

Author

Wolfram, E. A., primary, Salvador, J., additional, Orte, F., additional, D'Elia, R., additional, Godin-Beekmann, S., additional, Kuttippurath, J., additional, Pazmiño, A., additional, Goutail, F., additional, Casiccia, C., additional, Zamorano, F., additional, Paes Leme, N., additional, and Quel, E. J., additional

Published
2012
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88. Stratospheric AOD after the 2011 eruption of Nabro volcano measured by lidars over the Northern Hemisphere

Author

Sawamura, P, primary, Vernier, J P, additional, Barnes, J E, additional, Berkoff, T A, additional, Welton, E J, additional, Alados-Arboledas, L, additional, Navas-Guzmán, F, additional, Pappalardo, G, additional, Mona, L, additional, Madonna, F, additional, Lange, D, additional, Sicard, M, additional, Godin-Beekmann, S, additional, Payen, G, additional, Wang, Z, additional, Hu, S, additional, Tripathi, S N, additional, Cordoba-Jabonero, C, additional, and Hoff, R M, additional

Published
2012
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90. Relative drifts and stability of satellite and ground-based stratospheric ozone profiles at NDACC lidar stations

Author

Nair, P. J., primary, Godin-Beekmann, S., additional, Froidevaux, L., additional, Flynn, L. E., additional, Zawodny, J. M., additional, Russell, J. M., additional, Pazmiño, A., additional, Ancellet, G., additional, Steinbrecht, W., additional, Claude, H., additional, Leblanc, T., additional, McDermid, S., additional, van Gijsel, J. A. E., additional, Johnson, B., additional, Thomas, A., additional, Hubert, D., additional, Lambert, J.-C., additional, Nakane, H., additional, and Swart, D. P. J., additional

Published
2012
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92. Pole-to-pole validation of ENVISAT/GOMOS ozone profiles using data from ground-based and balloon-sonde measurements

Author

Meijer, Y. J., Swart, D. P. J., Koelemeijer, R., Allaart, M., Andersen, S., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H., Kois, B., Koopman, R., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Raffalski, U., Schets, H., Stubi, R., Suortti, T., Visconti, G., Yela, M., von der Gathen, Peter, Meijer, Y. J., Swart, D. P. J., Koelemeijer, R., Allaart, M., Andersen, S., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H., Kois, B., Koopman, R., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Raffalski, U., Schets, H., Stubi, R., Suortti, T., Visconti, G., Yela, M., and von der Gathen, Peter

Abstract

In March 2002 the European Space Agency (ESA) launched the polar-orbiting environmental satellite Envisat. One of its nine instruments is the Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument, which is a medium-resolution stellar occultation spectrometer measuring vertical profiles of ozone. In the first year after launch a large group of scientists performed additional measurements and validation activities to assess the quality of Envisat observations. In this paper, we present validation results of GOMOS ozone profiles from comparisons to microwave radiometer, balloon ozonesonde, and lidar measurements worldwide. Thirty-one instruments/launch sites at twenty-five stations ranging from the Arctic to the Antarctic joined in this activity. We identified 6747 collocated observations that were performed within an 800-km radius and a maximum 20-hour time difference of a satellite observation, for the period between 1 July 2002 and 1 April 2003. The GOMOS data analyzed here have been generated with a prototype processor that corresponds to version 4.02 of the operational GOMOS processor. The GOMOS data initially contained many obviously unrealistic values, most of which were successfully removed by imposing data quality criteria. Analyzing the effect of these criteria indicated, among other things, that for some specific stars, only less than 10% of their occultations yield an acceptable profile. The total number of useful collocated observations was reduced to 2502 because of GOMOS data unavailability, the imposed data quality criteria, and lack of altitude overlap. These collocated profiles were compared, and the results were analyzed for possible dependencies on several geophysical (e.g., latitude) and GOMOS observational (e.g., star characteristics) parameters. We find that GOMOS data quality is strongly dependent on the illumination of the limb through which the star is observed. Data measured under bright limb conditions, and to a certain extent a

Published
2004

93. Gomos ozone profile validation using data from ground-based and balloon-sonde measurements

Author

Meijer, Y. J., Swart, D. P. J., Allaart, M., Andersen, S. B., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H. M., Koelemeijer, R., Kois, B., Koopman, R. M., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Kopp, G., Schets, H., Stübi, R., Suortti, T., Visconti, G., Yela, M., von der Gathen, Peter, Meijer, Y. J., Swart, D. P. J., Allaart, M., Andersen, S. B., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H. M., Koelemeijer, R., Kois, B., Koopman, R. M., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Kopp, G., Schets, H., Stübi, R., Suortti, T., Visconti, G., Yela, M., and von der Gathen, Peter

Abstract

One of the nine instruments on-board the polar-orbiting environmental satellite ENVISAT is the Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument. This paper presents validation results of GOMOS ozone profiles (v6.0a) from comparisons to microwave radiometer, balloon ozonesonde and lidar measurements worldwide. Thirty-one instruments/ launch-sites at twenty-five stations ranging from the Arctic to the Antarctic joined in this activity. We identified 3,713 useful collocated observations that were performed within an 800-km radius and a maximum 20hours time difference of a satellite observation, for the period June 2002 and March 2003. These collocated profiles were compared and the results were analyzed for possible dependencies on several geophysical (e.g., latitude) and GOMOS observational (e.g., star characteristics) parameters. In a dark atmospheric limb the GOMOS data agree very well with the correlative data and between 20- to 61-km altitude their differences only show a small (2.5%) insignificant negative bias with a standard deviation of about 14%. This conclusion is demonstrated to be independent of the star temperature and magnitude, and the latitudinal region of the GOMOS observation.

Published
2004

94. Pole-to-pole validation of GOMOS ozone profiles using data from ground-based and balloon-sonde measurements

Author

Meijer, Y. J., Swart, D. P. J., Allaart, M., Andersen, S. B., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H. M., Koelemeijer, R., Kois, B., Koopman, R. M., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Kopp, G., Schets, H., Stübi, R., Suortti, T., Visconti, G., Yela, M., von der Gathen, Peter, Meijer, Y. J., Swart, D. P. J., Allaart, M., Andersen, S. B., Bodeker, G., Boyd, I., Braathen, G. O., Calisesi, Y., Claude, H., Dorokhov, V., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H. M., Koelemeijer, R., Kois, B., Koopman, R. M., Lambert, J. C., Leblanc, T., McDermid, I. S., Pal, S., Kopp, G., Schets, H., Stübi, R., Suortti, T., Visconti, G., Yela, M., and von der Gathen, Peter

Published
2004

95. Assessment of the Version 1.3 ILAS-II ozone data quality in the high lower stratosphere

Author

Sugita, T., Kanzawa, H., Nakajima, H., Yokota, T., Gernandt, Hartwig, Herber, Andreas, König-Langlo, Gert, Murayama, Y., Yamamori, M., Sato, K., Yushkov, V. A., Dorokhov, V., Allaart, M., Litynska, Z., Braathen, G. O., Kyrö, E., Backer, H., Yela, M., Klekociuk, A., Goutail, F., Godin-Beekmann, S., Taalas, P., Deshler, T., Roscoe, H. K., Oltmans, S. J., Johnson, B., Kobayashi, H., Sasano, Y., von der Gathen, Peter, Sugita, T., Kanzawa, H., Nakajima, H., Yokota, T., Gernandt, Hartwig, Herber, Andreas, König-Langlo, Gert, Murayama, Y., Yamamori, M., Sato, K., Yushkov, V. A., Dorokhov, V., Allaart, M., Litynska, Z., Braathen, G. O., Kyrö, E., Backer, H., Yela, M., Klekociuk, A., Goutail, F., Godin-Beekmann, S., Taalas, P., Deshler, T., Roscoe, H. K., Oltmans, S. J., Johnson, B., Kobayashi, H., Sasano, Y., and von der Gathen, Peter

Published
2004

98. Polar Stratospheric Ozone

Author

Newman, P., Pyle, J. A., Austin, J., Braathen, G., Canzini, P., Carslaw, K., Forster, P., Godin-Beekmann, S., Knudsen, B., Kreher, K., Nakane, H., Pawson, S., Ramaswamy, V., Rex, Markus, Salawitch, R., Shindell, D., Tabazadeh, A., Toohey, D., Newman, P., Pyle, J. A., Austin, J., Braathen, G., Canzini, P., Carslaw, K., Forster, P., Godin-Beekmann, S., Knudsen, B., Kreher, K., Nakane, H., Pawson, S., Ramaswamy, V., Rex, Markus, Salawitch, R., Shindell, D., Tabazadeh, A., and Toohey, D.

Published
2003

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