On the Long-term Stability of Satellite and Ground-based Ozone Profile Records

Autor: Hubert, Daan, Lambert, Jean-Christopher, Verhoelst, Tijl, Keppens, Arno, Granville, José, Bhartia, Pawan K., Bourassa, Adam E., Damadeo, Robert, Degenstein, Doug A., Froidevaux, Lucien, Godin-Beekmann, Sophie, Johnson, Bryan J., Kaempfer, Niklaus, Leblanc, Thierry, Lichtenberg, Günter, Murtagh, Donal P., Maillard Barras, Eliane, Nakane, Hideaki, Nedoluha, Gerald, Portafaix, Thierry, Querel, Richard, Raspollini, Piera, Russell, James-M., Salvador, J., Smit, Herman G. J., Sofieva, Viktoria, Stebel, Kerstin, Steinbrecht, Wolfgang, Stübi, René, Swart, Daan P. J., Tarasick, David W., Thompson, Anne M., van Malderen, Roeland, von Clarmann, Thomas, von Der Gathen, Peter, Walker, Kaley A., Weber, Mark, Witte, Jacquelyn C., Elian, Wolfram, Zawodny, Joseph M.
Přispěvatelé: Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), NASA Goddard Space Flight Center (GSFC), Institute of Space and Atmospheric Studies [Saskatoon] (ISAS), Department of Physics and Engineering Physics [Saskatoon], University of Saskatchewan [Saskatoon] (U of S)-University of Saskatchewan [Saskatoon] (U of S), NASA Langley Research Center [Hampton] (LaRC), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), STRATO - 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), National Oceanic and Atmospheric Administration (NOAA), Oeschger Centre for Climate Change Research (OCCR), University of Bern, DLR Institut für Methodik der Fernerkundung / DLR Remote Sensing Technology Institute (IMF), Deutsches Zentrum für Luft- und Raumfahrt [Oberpfaffenhofen-Wessling] (DLR), Chalmers University of Technology [Göteborg], Federal Office of Meteorology and Climatology MeteoSwiss, National Institute for Environmental Studies (NIES), Naval Research Laboratory (NRL), Laboratoire de l'Atmosphère et des Cyclones (LACy), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Météo-France, National Institute of Water and Atmospheric Research [Lauder] (NIWA), Istituto di Fisica Applicata 'Nello Carrara' (IFAC), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Center for Atmospheric Sciences [Hampton] (CAS), Hampton University, Centro de Investigaciones en Láseres y Aplicaciones [Buenos Aires] (CEILAP), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Instituto de Investigaciones Científicas y Técnicas para la Defensa (CITEDEF), Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association, Finnish Meteorological Institute (FMI), Norwegian Institute for Air Research (NILU), Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), Payerne Aerological Station, National Institute for Public Health and the Environment [Bilthoven] (RIVM), Environment and Climate Change Canada, Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), Karlsruher Institut für Technologie (KIT), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), University of Toronto, University of Bremen, Science Systems and Applications, Inc. [Lanham] (SSAI), Instituto de Investigaciones Científicas y Técnicas para la Defensa (CITEDEF), California Institute of Technology (CALTECH)-NASA, Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Consiglio Nazionale delle Ricerche [Roma] (CNR), Institut Royal Météorologique de Belgique [Bruxelles] (IRM), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Météo France, Cardon, Catherine
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: AGU 2017 Fall Meeting
AGU 2017 Fall Meeting, Dec 2017, New Orleans, United States
Popis: International audience; In recent years, many analyses of space- and ground-based data records reported signs or evidence of increasing ozone concentrations in the extrapolar upper stratosphere since the late 1990s. However, the magnitude and significance of the trend estimates vary from one study to another, prompting the ozone research community to further investigate the causes of these differences. A broader consensus has emerged in the past year, placing the positive trend in the upper stratosphere on solid ground and heralding the start of an observation-based exploration of the recovery of stratospheric ozone. More accurate trend estimates are needed to identify the geophysical processes contributing to the recovery and their relative importance. Uncovering seasonal and spatial trend patterns will be key in reaching this objective, not just in the extrapolar upper stratosphere but elsewhere as well.However, at the moment, it remains unclear whether current ozone profile observing systems are able to provide this information. We address this question with an exploration of the capabilities and limitations of current data records in space (limb/occultation sounders) and on the ground (NDACC/GAW/SHADOZ-affiliated sonde, stratospheric lidar and microwave radiometer sites) to infer decadal trends and their vertical, latitudinal and seasonal patterns. We focus on long-term stability, one of the key drivers of the ability to detect trends. We present updated results of a comprehensive analysis that allowed us to quantify the drift of satellite data relative to the ground-based networks (Hubert et al., 2016). In a companion analysis we exploited the satellite data to uncover temporal and spatial inhomogeneities in the ground-based time series, some of which were traced to known changes occurring at different moments across the network. These changes add to the challenge to derive unbiased ozone trends from ground-based observations and they impede our ability to constrain satellite drift to the level required for current and future ozone trend assessments. We conclude that ongoing efforts to homogenise the ground-based data records are essential.
Databáze: OpenAIRE
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