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7 results on '"Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO)"'

1. Humidity of the tropical lower stratosphere: Observations and analysis

Author

A. Lukyanov, L. Korshunov, Vladimir Yushkov, Sergey Khaykin, Jean-Pierre Pommereau, Johannes K. Nielsen, Holger Vömel, Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), 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), Danish Meteorological Institute (DMI), Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), and Deutscher Wetterdienst [Offenbach] (DWD)

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Atmospheric Science, 010504 meteorology & atmospheric sciences, Hygrometer, Humidity, Oceanography, Atmospheric sciences, 01 natural sciences, 010309 optics, Troposphere, 13. Climate action, Climatology, Brightness temperature, 0103 physical sciences, Environmental science, Potential temperature, Tropopause, Stratosphere, Water vapor, 0105 earth and related environmental sciences
Abstract

International audience; The results of measurements of water-vapor vertical profiles in the upper troposphere and stratosphere on board a meteorological balloon with a FLASH-B optical fluorescent hygrometer (Russia) are presented. These data were obtained during two international field campaigns in West Africa (August 2006) and Central America (August 2007). Eleven high-resolution water-vapor vertical profiles measured in the course of these works make it possible to characterize the processes controlling humidity in the tropical tropopause region. Layers with increased humidity are detected in the lower stratosphere over West Africa to the level of the potential temperature 450 K. An analysis of satellite maps of the brightness temperature, balloon ozone measurements, and aerosol scattering, as well as trajectory modeling, display the relation between the observed layers with increased humidity and the phenomena of convective overshooting of the tropopause, as a result of which cold and ozone-depleted air penetrates into the lower stratosphere together with ice particles, which, rapidly sublimating, locally increase the water-vapor concentration. A comparison of the humidity data obtained in West Africa in 2006 and in Central America in 2007 reveals substantial distinctions in values and vertical structures of water vapor, both in the tropopause region and in the middle stratosphere.

Published
2010
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2. Arctic stratospheric dehydration - Part 2: Microphysical modeling

Author

Jens-Uwe Grooß, Thomas Peter, Holger Vömel, Rigel Kivi, Christopher R. Hoyle, Frank G. Wienhold, Michael C. Pitts, B. P. Luo, I. Engel, Sergey Khaykin, Institute for Atmospheric and Climate Science [Zürich] (IAC), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), 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), Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Deutscher Wetterdienst [Offenbach] (DWD), Finnish Meteorological Institute (FMI), Laboratory of Atmospheric Chemistry [Paul Scherrer Institute] (LAC), Paul Scherrer Institute (PSI), Institut für Energie- und Klimaforschung - Stratosphäre (IEK-7), Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association, and NASA Langley Research Center [Hampton] (LaRC)

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Atmospheric Science, 010504 meteorology & atmospheric sciences, Nucleation, Atmospheric sciences, 01 natural sciences, 7. Clean energy, lcsh:QC1-999, lcsh:Chemistry, 010309 optics, Arctic, lcsh:QD1-999, 13. Climate action, Wind shear, Climatology, Ozone layer, 0103 physical sciences, Ice nucleus, ddc:550, Polar, Environmental science, Stratosphere, Water vapor, lcsh:Physics, 0105 earth and related environmental sciences
Abstract

Large areas of synoptic-scale ice PSCs (polar stratospheric clouds) distinguished the Arctic winter 2009/2010 from other years and revealed unprecedented evidence of water redistribution in the stratosphere. A unique snapshot of water vapor repartitioning into ice particles was obtained under extremely cold Arctic conditions with temperatures around 183 K. Balloon-borne, aircraft and satellite-based measurements suggest that synoptic-scale ice PSCs and concurrent reductions and enhancements in water vapor are tightly linked with the observed de- and rehydration signatures, respectively. In a companion paper (Part 1), water vapor and aerosol backscatter measurements from the RECONCILE (Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions) and LAPBIAT-II (Lapland Atmosphere–Biosphere Facility) field campaigns have been analyzed in detail. This paper uses a column version of the Zurich Optical and Microphysical box Model (ZOMM) including newly developed NAT (nitric acid trihydrate) and ice nucleation parameterizations. Particle sedimentation is calculated in order to simulate the vertical redistribution of chemical species such as water and nitric acid. Despite limitations given by wind shear and uncertainties in the initial water vapor profile, the column modeling unequivocally shows that (1) accounting for small-scale temperature fluctuations along the trajectories is essential in order to reach agreement between simulated optical cloud properties and observations, and (2) the use of recently developed heterogeneous ice nucleation parameterizations allows the reproduction of the observed signatures of de- and rehydration. Conversely, the vertical redistribution of water measured cannot be explained in terms of homogeneous nucleation of ice clouds, whose particle radii remain too small to cause significant dehydration.

Published
2014
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3. Correlation between equatorial Kelvin waves and the occurrence of extremely thin ice clouds at the tropical tropopause

Author

Markus Rex, Gé Verver, Otto Schrems, Masatomo Fujiwara, Franz Immler, Kirstin Krüger, Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Deutscher Wetterdienst [Offenbach] (DWD), Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR), Hokkaido University [Sapporo, Japan], Royal Netherlands Meteorological Institute (KNMI), Department of Bentho-pelagic processes, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), and EGU, Publication

Subjects
0106 biological sciences, Atmospheric Science, 010504 meteorology & atmospheric sciences, 010502 geochemistry & geophysics, Atmospheric sciences, 01 natural sciences, law.invention, Atmosphere, lcsh:Chemistry, symbols.namesake, law, 0105 earth and related environmental sciences, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, lcsh:QC1-999, Lidar, lcsh:QD1-999, 13. Climate action, Temporal resolution, Climatology, symbols, Radiosonde, Cirrus, Tropopause, Kelvin wave, Geology, Water vapor, lcsh:Physics, 010606 plant biology & botany
Abstract

A number of field-campaigns in the tropics have been conducted in the recent years with two different LIDAR systems at Paramaribo in Suriname (5.8° N, 55.2° W). The lidars detect particles in the atmosphere with high vertical and temporal resolution and are capable of detecting extremely thin cloud layers which frequently occur in the tropical tropopause layer (TTL). Radiosonde as well as operational ECMWF analysis show that temperature anomalies caused by equatorial Kelvin waves propagate downward, well below the cold point tropopause (CPT). We find a clear correlation between the temperature anomalies introduced by these waves and the occurrence of thin cirrus in the TTL. In particular we found that extremely thin ice clouds form regularly where cold anomalies shift the tropopause to high altitudes. This finding suggests an influence of Kelvin wave activity on the dehydration in the TTL and thus on the global stratospheric water vapour concentration.

Published
2008

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

Author

Hennie Kelder, S. Chandra, Pieternel F. Levelt, Holger Vömel, E. Joseph, Esko Kyrö, S. J. Oltmans, Valery Dorokhov, Anne M. Thompson, Lucien Froidevaux, David J. Moore, Signe B. Andersen, John T. Merrill, Gérard Ancellet, René Stübi, Susan E. Strahan, P. Viatte, Jonathan Davies, Georg Hansen, Masatomo Fujiwara, B. Bojkov, Nathaniel J. Livesey, P. von der Gathen, Gert J. R. Coetzee, H. De Backer, G. Koenig-Langlo, Bryan N. Duncan, P. Skrivankova, Hans Claude, David W. Tarasick, Pawan K. Bhartia, Greg Bodeker, Gary A. Morris, Sophie Godin-Beekmann, Margarita Yela, Jacquelyn C. Witte, H. Dier, Beverly J. Johnson, Marc Allaart, M. C. Parrondos, Bertrand Calpini, Emilio Cuevas, G. Zablocki, Susan S. Kulawik, Françoise Posny, Mark R. Schoeberl, Michael J. Newchurch, F. J. Schmidlin, Alberto Redondas, C. P. Leong, Jerald R. Ziemke, Valérie Thouret, NASA Goddard Space Flight Center (GSFC), Goddard Earth Sciences and Technology Center (GEST), University of Maryland [Baltimore County] (UMBC), University of Maryland System-University of Maryland System, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Royal Netherlands Meteorological Institute (KNMI), Science Systems and Applications, Inc. [Lanham] (SSAI), PennState Meteorology Department, Pennsylvania State University (Penn State), Penn State System-Penn State System, Izaña Atmospheric Research Center (IARC), Agencia Estatal de Meteorología (AEMet), Environment Canada (Downsview), National Institute of Water and Atmospheric Research [Lauder] (NIWA), Norwegian Institute for Air Research (NILU), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado [Boulder]-National Oceanic and Atmospheric Administration (NOAA), Department of Atmospheric Science [Huntsville], University of Alabama in Huntsville (UAH), 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), Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), Danish Meteorological Institute (DMI), Arctic Research Centre of Finnish Meteorological Institute, Finnish Meteorological Institute (FMI), Laboratorio de Atmosfera [Madrid], Spanish Space Agency, Centre of Aerology [Poland], Institute of Meteorology and Water Management - National Research Institute (IMGW - PIB), United Kingdom Met Office [Exeter], Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Payerne Aerological Station, Federal Office of Meteorology and Climatology MeteoSwiss, Czech Hydrometeorological Institute (CHMI), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), Department of Environmental Affairs and Tourism, Marine and Coastal Management, South African Government, Graduate School of Environmental Science [Sapporo], Hokkaido University [Sapporo, Japan], 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 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), Department of Physics and Astronomy [Valparaiso], Valparaiso University, Graduate School of Oceanography [Narragansett], University of Rhode Island (URI), Malaysian Meteorological Department (MetMalaysia), Ministry of Science, Technology and Innovation [Malaysia] (MOSTI), Howard University, Institut Royal Météorologique de Belgique [Bruxelles] (IRM), 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, and Fluids and Flows

Subjects
Atmospheric Science, Residual method, 010504 meteorology & atmospheric sciences, Microwave Limb Sounder, Soil Science, 010501 environmental sciences, Aquatic Science, Oceanography, Atmospheric sciences, 01 natural sciences, Troposphere, chemistry.chemical_compound, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), pollution, Tropospheric ozone, Stratosphere, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology, Ozone Monitoring Instrument, tropospheric ozone, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Ecology, Paleontology, Forestry, air quality, Geophysics, Tropospheric Emission Spectrometer, chemistry, 13. Climate action, Space and Planetary Science, Climatology, Middle latitudes, Environmental science, Tropospheric column ozone, Tropopause
Abstract

We estimate the tropospheric column ozone using a forward trajectory model to increase the horizontal resolution of the Aura Microwave Limb Sounder (MLS) derived stratospheric column ozone. Subtracting the MLS stratospheric column from Ozone Monitoring Instrument total column measurements gives the trajectory enhanced tropospheric ozone residual (TTOR). Because of different tropopause definitions, we validate the basic residual technique by computing the 200-hPa-to-surface column and comparing it to the same product from ozonesondes and Tropospheric Emission Spectrometer measurements. Comparisons show good agreement in the tropics and reasonable agreement at middle latitudes, but there is a persistent low bias in the TTOR that may be due to a slight high bias in MLS stratospheric column. With the improved stratospheric column resolution, we note a strong correlation of extratropical tropospheric ozone column anomalies with probable troposphere-stratosphere exchange events or folds. The folds can be identified by their colocation with strong horizontal tropopause gradients. TTOR anomalies due to folds may be mistaken for pollution events since folds often occur in the Atlantic and Pacific pollution corridors. We also compare the 200-hPa-to-surface column with Global Modeling Initiative chemical model estimates of the same quantity. While the tropical comparisons are good, we note that chemical model variations in 200-hPa-to-surface column at middle latitudes are much smaller than seen in the TTOR.

Published
2007
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5. Arctic winter 2005: Implications for stratospheric ozone loss and climate change

Author

J. Davies, Vladimir Yushkov, A. D. Risley, Z. Litynska, M. Gerding, Karl W. Hoppel, Ross J. Salawitch, Christos Zerefos, Geir O. Braathen, M. C. Parrondo, Hans Claude, P. von der Gathen, David J. Moore, Sophie Godin-Beekmann, Beverly J. Johnson, H. De Backer, P. Skrivankova, H. Dier, Hideaki Nakane, Esko Kyrö, René Stübi, Marc Allaart, H. Fast, Richard M. Bevilacqua, P. Viatte, Valery Dorokhov, Barbara Naujokat, Martyn P. Chipperfield, Signe B. Andersen, Neil R. P. Harris, Markus Rex, E. Reimer, H. Deckelmann, Alfred Wegener Institute for Polar and Marine Research (AWI), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), European Ozone Research Coordinating Unit [Cambridge] (EORCU), University of Cambridge [UK] (CAM), School of Earth and Environment [Leeds] (SEE), University of Leeds, Institut für Meteorologie [Berlin], Freie Universität Berlin, Royal Netherlands Meteorological Institute (KNMI), Danish Meteorological Institute (DMI), Naval Research Laboratory (NRL), Norwegian Institute for Air Research (NILU), Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), Meteorological Service of Canada (MSC), Environment and Climate Change Canada, Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Leibniz-Institut für Atmosphärenphysik (IAP), Universität Rostock-Leibniz Association, 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), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), Sodankylä Geophysical Observatory, University of Oulu, Institute of Meteorology and Water Management - National Research Institute (IMGW - PIB), Met Office Hadley Centre for Climate Change (MOHC), United Kingdom Met Office [Exeter], National Institute for Environmental Studies (NIES), Instituto Nacional de Técnica Aeroespacial (INTA), Science Applications International Corporation (SAIC), Czech Hydrometeorological Institute (CHMI), Payerne Aerological Station, Federal Office of Meteorology and Climatology MeteoSwiss, Laboratory of Climatology and Atmospheric Environment [Athens] (LACAE), and National and Kapodistrian University of Athens (NKUA)

Subjects
Arctic sea ice decline, 010504 meteorology & atmospheric sciences, Polar meteorology, Climate change, 010502 geochemistry & geophysics, Atmospheric sciences, Middle atmosphere, 01 natural sciences, Ozone depletion, Arctic geoengineering, Geophysics, Arctic, [SDU]Sciences of the Universe [physics], 13. Climate action, Polar vortex, Climatology, Ozone layer, General Earth and Planetary Sciences, Environmental science, Stratosphere, 0105 earth and related environmental sciences
Abstract

International audience; 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.

Published
2006
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6. Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and lidar measurements

Author

David W. Tarasick, Gert J. R. Coetzee, Hans Claude, P. Skrivankova, F. J. Schmidlin, Sophie Godin-Beekmann, Robert Jarnot, G. Zablocki, R. E. Cofield, Françoise Posny, B. Bojkov, I. S. McDermid, P. Viatte, Michael J. Schwartz, Yan Jiang, Greg Bodeker, R. A. Fuller, Lucien Froidevaux, H. Dier, Hennie Kelder, Nathaniel J. Livesey, Beverly J. Johnson, Thierry Leblanc, Giovanni Laneve, S. J. Oltmans, H. De Backer, Brian Knosp, Marc Allaart, M. C. Parrondos, William H. Daffer, René Stübi, Robert S. Harwood, Michael J. Newchurch, Signe B. Andersen, Gary A. Morris, P. C. Stek, William G. Read, Margarita Yela, Bertrand Calpini, Brian J. Drouin, N. P. Leme, Joe W. Waters, W. V. Snyder, Esko Kyrö, D. T. Cuddy, Gert König-Langlo, Anne M. Thompson, R. P. Thurstans, V. S. Perun, P. von der Gathen, Masatomo Fujiwara, P. A. Wagner, L. S. Fook, Alyn Lambert, John T. Merrill, Holger Vömel, Jonathan Davies, M. J. Filipiak, Valérie Thouret, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), NASA Goddard Space Flight Center (GSFC), 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), Institute of Atmospheric and Environmental Science [Edinburgh], University of Edinburgh, Royal Netherlands Meteorological Institute (KNMI), Danish Meteorological Institute (DMI), Lauder Atmospheric Research Station, National Institute of Water and Atmospheric Research [Auckland] (NIWA), Payerne Aerological Station, Federal Office of Meteorology and Climatology MeteoSwiss, Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), South African Weather Service (SAWS), Environment and Climate Change Canada, Institut Royal Météorologique de Belgique [Bruxelles] (IRM), Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Graduate School of Environmental Science [Sapporo], Hokkaido University [Sapporo, Japan], NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), Instituto Nacional de Pesquisas Espaciais (INPE), Ministério da Ciência, Tecnologia e Inovação, Finnish Meteorological Institute (FMI), Centro di Ricerca Progetto San Marco (CRPSM), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Malaysian Meteorological Department (MetMalaysia), Ministry of Science, Technology and Innovation [Malaysia] (MOSTI), Graduate School of Oceanography [Narragansett], University of Rhode Island (URI), Department of Physics and Astronomy [Valparaiso], Valparaiso University, Department of Atmospheric Science [Huntsville], University of Alabama in Huntsville (UAH), Instituto Nacional de Técnica Aeroespacial (INTA), Laboratoire de l'Atmosphère et des Cyclones (LACy), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Météo France, Czech Hydrometeorological Institute (CHMI), PennState Meteorology Department, Pennsylvania State University (Penn State), Penn State System-Penn State System, Laboratoire d'aérologie (LAERO), 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, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado [Boulder]-National Oceanic and Atmospheric Administration (NOAA), Institute of Meteorology and Water Management - National Research Institute (IMGW - PIB), Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Météo-France, 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), and 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)

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, ozonesonde, 0211 other engineering and technologies, Soil Science, 02 engineering and technology, Aquatic Science, Oceanography, 01 natural sciences, MLS, Troposphere, chemistry.chemical_compound, Altitude, Geochemistry and Petrology, Ozone layer, Earth and Planetary Sciences (miscellaneous), Tropospheric ozone, Stratosphere, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology, validation, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Ecology, Paleontology, Forestry, Microwave Limb Sounder, ozone, Geophysics, Lidar, chemistry, 13. Climate action, Space and Planetary Science, Climatology, Middle latitudes, Environmental science, Aura
Abstract

We present validation studies of MLS version 2.2 upper tropospheric and stratospheric ozone profiles using ozonesonde and lidar data as well as climatological data. Ozone measurements from over 60 ozonesonde stations worldwide and three lidar stations are compared with coincident MLS data. The MLS ozone stratospheric data between 150 and 3 hPa agree well with ozonesonde measurements, within 8% for the global average. MLS values at 215 hPa are biased high compared to ozonesondes by A`20% at middle to high latitude, although there is a lot of variability in this altitude region. Comparisons between MLS and ground-based lidar measurements from Mauna Loa, Hawaii, from the Table Mountain Facility, California, and from the Observatoire de Haute-Provence, France, give very good agreement, within A`5%, for the stratospheric values. The comparisons between MLS and the Table Mountain Facility tropospheric ozone lidar show that MLS data are biased high by A`30% at 215 hPa, consistent with that indicated by the ozonesonde data. We obtain better global average agreement between MLS and ozonesonde partial column values down to 215 hPa, although the average MLS values at low to middle latitudes are higher than the ozonesonde values by up to a few percent. MLS v2.2 ozone data agree better than the MLS v1.5 data with ozonesonde and lidar measurements. MLS tropical data show the wave one longitudinal pattern in the upper troposphere, with similarities to the average distribution from ozonesondes. High upper tropospheric ozone values are also observed by MLS in the tropical Pacific from June to November.

Published
2007
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7. Match observations in the Arctic winter 1996/97: High stratospheric ozone loss rates correlate with low temperatures deep inside the polar vortex

Author

Vladimir Yushkov, E. Reimer, Markus Rex, Hiroshi Kanzawa, P. Viatte, J. Cisneros, Christos Zerefos, Neil R. P. Harris, J. Steger, Geir O. Braathen, Efstratios K. Kosmidis, G. Murphy, H. De Backer, R. Alfier, C. Parrondo, H. Fast, C. Vialle, Valery Dorokhov, B. Kois, Hideaki Nakane, Esko Kyrö, Hans Claude, M. Alpers, Georg Hansen, Sophie Godin, H. Dier, M. J. Molyneux, A. Schulz, Fabrizio Ravegnani, Costas A. Varotsos, Z. Litynska, Yutaka Kondo, A. Beck, P. von der Gathen, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), European Ozone Research Coordinating Unit [Cambridge] (EORCU), University of Cambridge [UK] (CAM), Norwegian Institute for Air Research (NILU), Institut für Meteorologie [Berlin], Freie Universität Berlin, Leibniz-Institut für Atmosphärenphysik (IAP), Universität Rostock-Leibniz Association, Instituto Nacional de Meteorologia [Madrid] (INM), Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), Institut Royal Météorologique de Belgique [Bruxelles] (IRM), Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Environment and Climate Change Canada, Service d'aéronomie (SA), 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), National Institute for Environmental Studies (NIES), Institute of Meteorology and Water Management - National Research Institute (IMGW - PIB), Nagoya University, Aristotle University of Thessaloniki, Finnish Meteorological Institute (FMI), United Kingdom Met Office [Exeter], Irish Meteorological Service (MET ÉIREANN), Instituto Nacional de Técnica Aeroespacial (INTA), Consiglio Nazionale delle Ricerche [Bologna] (CNR), Academy of Athens, Federal Office of Meteorology and Climatology MeteoSwiss, Laboratory of Atmospheric Physics [Thessaloniki], Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute (IRM), and 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)

Subjects
Ozone, 010504 meteorology & atmospheric sciences, Stratospheric ozone, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], 0211 other engineering and technologies, 02 engineering and technology, Atmospheric sciences, 01 natural sciences, chemistry.chemical_compound, Polar vortex, Ozone layer, Low temperatures, Stratosphere, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Global change, Vortex, The arctic, Geophysics, chemistry, 13. Climate action, Climatology, General Earth and Planetary Sciences, Environmental science, Loss rate
Abstract

With the Match technique, which is based on the coordinated release of ozonesondes, chemical ozone loss rates in the Arctic stratospheric vortex in early 1997 have been quantified in a vertical region between 400 K and 550 K. Ozone destruction was observed from mid February to mid March in most of these levels, with maximum loss rates between 25 and 45ppbv/day. The vortex averaged loss rates and the accumulated vertically integrated ozone loss have been smaller than in the previous two winters, indicating that the record low ozone columns observed in spring 1997 were partly caused by dynamical effects. The observed ozone loss is inhomogeneous through the vortex with the highest loss rates located in the vortex centre, coinciding with the lowest temperatures. Here the loss rates per sunlit hour reached 6 ppbv/h, while the corresponding vortex averaged rates did not exceed 3.9 ppbv/h. This work was supported by the Environment and Climate Programme of the Directorate General for Science and Technology (DG-XII) of the European Commission (contract no. ENV4-CT95-0145), the Bundesministeriumff ir Bildung, Wissenschaft, Forschungu nd Technologie(B MBF) of Germany( contract no. 01 LO9508/6) and by all the countrieso f the participating personnel. AWI contribution number: 1549.

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