O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017
International audience In this study, we present geographical patterns of ozone (O 3 ) variability in the troposphere and the stratosphere derived from 9 years of IASI observations (2008-2017). The instrument provides a unique dataset of global vertically-resolved O 3 profiles with a twice daily glo...
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ftunivnantes:oai:HAL:insu-01644416v1 2023-05-15T17:35:37+02:00 O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 Wespes, Catherine Hurtmans, Daniel Boynard, Anne Clerbaux, Cathy Coheur, Pierre-François Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique Université libre de Bruxelles (ULB) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Rome, Italy 2017-10-02 https://hal-insu.archives-ouvertes.fr/insu-01644416 en eng HAL CCSD insu-01644416 https://hal-insu.archives-ouvertes.fr/insu-01644416 EUMETSAT Meteorological Satellite Conference 2017 https://hal-insu.archives-ouvertes.fr/insu-01644416 EUMETSAT Meteorological Satellite Conference 2017, Oct 2017, Rome, Italy [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/conferenceObject Poster communications 2017 ftunivnantes 2022-10-19T00:09:22Z International audience In this study, we present geographical patterns of ozone (O 3 ) variability in the troposphere and the stratosphere derived from 9 years of IASI observations (2008-2017). The instrument provides a unique dataset of global vertically-resolved O 3 profiles with a twice daily global coverage and a fairly good vertical resolution in both the troposphere and the stratosphere, allowing to monitor the year-to-year variability in these layers. The retrievals are performed using the FORLI software, a fast radiative transfer model based on the optimal estimation method, set up for near real-time and large scale processing of IASI data. Multivariate regressions, which include important geophysical drivers of O 3 variation (e.g. solar flux - SF, quasi biennial oscillations - QBO, El Niño/Southern Oscillation - ENSO, North Atlantic Oscillation-NAO) and a linear trend term, have been performed on time series of spatially gridded averaged O 3 . The performance of the regression models for the different altitude layers is evaluated in terms of the representativeness of the fitted model and explanatory variables. The spatial structures of the resulting covariates and trends are then analyzed. In particular, we will also focus on O 3 trends observed in the upper stratosphere, which possibly point out a recovery of upper stratospheric ozone, and in the troposphere over and downwind anthropogenic polluted areas characterized either by increased (e.g. over Asia) or decreased (e.g. over Europe and the US) O 3 precursor emissions. FORLI O 3 -CO correlations patterns in the troposphere will also be discussed to evaluate the continental influence on tropospheric O 3 trends. Conference Object North Atlantic North Atlantic oscillation Université de Nantes: HAL-UNIV-NANTES |
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Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Wespes, Catherine Hurtmans, Daniel Boynard, Anne Clerbaux, Cathy Coheur, Pierre-François O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience In this study, we present geographical patterns of ozone (O 3 ) variability in the troposphere and the stratosphere derived from 9 years of IASI observations (2008-2017). The instrument provides a unique dataset of global vertically-resolved O 3 profiles with a twice daily global coverage and a fairly good vertical resolution in both the troposphere and the stratosphere, allowing to monitor the year-to-year variability in these layers. The retrievals are performed using the FORLI software, a fast radiative transfer model based on the optimal estimation method, set up for near real-time and large scale processing of IASI data. Multivariate regressions, which include important geophysical drivers of O 3 variation (e.g. solar flux - SF, quasi biennial oscillations - QBO, El Niño/Southern Oscillation - ENSO, North Atlantic Oscillation-NAO) and a linear trend term, have been performed on time series of spatially gridded averaged O 3 . The performance of the regression models for the different altitude layers is evaluated in terms of the representativeness of the fitted model and explanatory variables. The spatial structures of the resulting covariates and trends are then analyzed. In particular, we will also focus on O 3 trends observed in the upper stratosphere, which possibly point out a recovery of upper stratospheric ozone, and in the troposphere over and downwind anthropogenic polluted areas characterized either by increased (e.g. over Asia) or decreased (e.g. over Europe and the US) O 3 precursor emissions. FORLI O 3 -CO correlations patterns in the troposphere will also be discussed to evaluate the continental influence on tropospheric O 3 trends. |
author2 |
Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique Université libre de Bruxelles (ULB) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Wespes, Catherine Hurtmans, Daniel Boynard, Anne Clerbaux, Cathy Coheur, Pierre-François |
author_facet |
Wespes, Catherine Hurtmans, Daniel Boynard, Anne Clerbaux, Cathy Coheur, Pierre-François |
author_sort |
Wespes, Catherine |
title |
O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
title_short |
O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
title_full |
O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
title_fullStr |
O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
title_full_unstemmed |
O 3 variability/trend in the troposphere and the stratosphere from IASI observations in 2008-2017 |
title_sort |
o 3 variability/trend in the troposphere and the stratosphere from iasi observations in 2008-2017 |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal-insu.archives-ouvertes.fr/insu-01644416 |
op_coverage |
Rome, Italy |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
EUMETSAT Meteorological Satellite Conference 2017 https://hal-insu.archives-ouvertes.fr/insu-01644416 EUMETSAT Meteorological Satellite Conference 2017, Oct 2017, Rome, Italy |
op_relation |
insu-01644416 https://hal-insu.archives-ouvertes.fr/insu-01644416 |
_version_ |
1766134843137064960 |