Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns
International audience Inthispaper,weexploitthefirst10-yeardatarecord(2008–2017)ofnitricacid(HNO3)totalcolumns measured by the IASI-A/MetOp infrared sounder, characterized by an exceptional daily sampling and a good vertical sensitivity in the lower-to-mid stratosphere (around 50 hPa), to monitor th...
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Online Access: | https://insu.hal.science/insu-02911744 https://insu.hal.science/insu-02911744v2/document https://insu.hal.science/insu-02911744v2/file/acp-22-10993-2022.pdf https://doi.org/10.5194/acp-22-10993-2022 |
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ftinsu:oai:HAL:insu-02911744v2 2023-11-05T03:35:27+01:00 Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns Wespes, Catherine Ronsmans, Gaétane Clarisse, Lieven Solomon, Susan Hurtmans, Daniel Clerbaux, Cathy Coheur, Pierre-François Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES) Université libre de Bruxelles (ULB) Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2022 https://insu.hal.science/insu-02911744 https://insu.hal.science/insu-02911744v2/document https://insu.hal.science/insu-02911744v2/file/acp-22-10993-2022.pdf https://doi.org/10.5194/acp-22-10993-2022 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-10993-2022 insu-02911744 https://insu.hal.science/insu-02911744 https://insu.hal.science/insu-02911744v2/document https://insu.hal.science/insu-02911744v2/file/acp-22-10993-2022.pdf doi:10.5194/acp-22-10993-2022 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-02911744 Atmospheric Chemistry and Physics, 2022, 22 (16), pp.10993-11007. ⟨10.5194/acp-22-10993-2022⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.5194/acp-22-10993-2022 2023-10-11T16:28:01Z International audience Inthispaper,weexploitthefirst10-yeardatarecord(2008–2017)ofnitricacid(HNO3)totalcolumns measured by the IASI-A/MetOp infrared sounder, characterized by an exceptional daily sampling and a good vertical sensitivity in the lower-to-mid stratosphere (around 50 hPa), to monitor the relationship between the temperature decrease and the observed HNO3 loss that occurs each year in the Antarctic stratosphere during the polar night. Since the HNO3 depletion results from the formation of polar stratospheric clouds (PSCs), which trigger the development of the ozone (O3) hole, its continuous monitoring is of high importance. We verify here, from the 10-year time evolution of HNO3 together with temperature (taken from reanalysis at 50 hPa), the recurrence of specific regimes in the annual cycle of IASI HNO3 and identify (for each year) the day and the 50 hPa temperature (“drop temperature”) corresponding to the onset of strong HNO3 depletion in the Antarctic winter. Although the measured HNO3 total column does not allow for the uptake of HNO3 by different types of PSC particles along the vertical profile to be differentiated, an average drop temperature of 194.2 ± 3.8 K, close to the nitric acid trihydrate (NAT) existence threshold (∼ 195 K at 50 hPa), is found in the region of potential vorticity lower than −10 × 10−5 K m2 kg−1 s−1 (similar to the 70–90◦ S equivalent latitude region during winter). The spatial distribution and interannual variability of the drop temperature are investigated and discussed. This paper highlights the capability of the IASI sounder to monitor the evolution of polar stratospheric HNO3, a key player in the processes involved in the depletion of stratospheric O3. Article in Journal/Newspaper Antarc* Antarctic polar night Institut national des sciences de l'Univers: HAL-INSU Atmospheric Chemistry and Physics 22 16 10993 11007 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Wespes, Catherine Ronsmans, Gaétane Clarisse, Lieven Solomon, Susan Hurtmans, Daniel Clerbaux, Cathy Coheur, Pierre-François Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Inthispaper,weexploitthefirst10-yeardatarecord(2008–2017)ofnitricacid(HNO3)totalcolumns measured by the IASI-A/MetOp infrared sounder, characterized by an exceptional daily sampling and a good vertical sensitivity in the lower-to-mid stratosphere (around 50 hPa), to monitor the relationship between the temperature decrease and the observed HNO3 loss that occurs each year in the Antarctic stratosphere during the polar night. Since the HNO3 depletion results from the formation of polar stratospheric clouds (PSCs), which trigger the development of the ozone (O3) hole, its continuous monitoring is of high importance. We verify here, from the 10-year time evolution of HNO3 together with temperature (taken from reanalysis at 50 hPa), the recurrence of specific regimes in the annual cycle of IASI HNO3 and identify (for each year) the day and the 50 hPa temperature (“drop temperature”) corresponding to the onset of strong HNO3 depletion in the Antarctic winter. Although the measured HNO3 total column does not allow for the uptake of HNO3 by different types of PSC particles along the vertical profile to be differentiated, an average drop temperature of 194.2 ± 3.8 K, close to the nitric acid trihydrate (NAT) existence threshold (∼ 195 K at 50 hPa), is found in the region of potential vorticity lower than −10 × 10−5 K m2 kg−1 s−1 (similar to the 70–90◦ S equivalent latitude region during winter). The spatial distribution and interannual variability of the drop temperature are investigated and discussed. This paper highlights the capability of the IASI sounder to monitor the evolution of polar stratospheric HNO3, a key player in the processes involved in the depletion of stratospheric O3. |
author2 |
Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES) Université libre de Bruxelles (ULB) Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Wespes, Catherine Ronsmans, Gaétane Clarisse, Lieven Solomon, Susan Hurtmans, Daniel Clerbaux, Cathy Coheur, Pierre-François |
author_facet |
Wespes, Catherine Ronsmans, Gaétane Clarisse, Lieven Solomon, Susan Hurtmans, Daniel Clerbaux, Cathy Coheur, Pierre-François |
author_sort |
Wespes, Catherine |
title |
Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
title_short |
Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
title_full |
Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
title_fullStr |
Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
title_full_unstemmed |
Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns |
title_sort |
polar stratospheric nitric acid depletion surveyed from a decadal dataset of iasi total columns |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://insu.hal.science/insu-02911744 https://insu.hal.science/insu-02911744v2/document https://insu.hal.science/insu-02911744v2/file/acp-22-10993-2022.pdf https://doi.org/10.5194/acp-22-10993-2022 |
genre |
Antarc* Antarctic polar night |
genre_facet |
Antarc* Antarctic polar night |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-02911744 Atmospheric Chemistry and Physics, 2022, 22 (16), pp.10993-11007. ⟨10.5194/acp-22-10993-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-10993-2022 insu-02911744 https://insu.hal.science/insu-02911744 https://insu.hal.science/insu-02911744v2/document https://insu.hal.science/insu-02911744v2/file/acp-22-10993-2022.pdf doi:10.5194/acp-22-10993-2022 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-22-10993-2022 |
container_title |
Atmospheric Chemistry and Physics |
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22 |
container_issue |
16 |
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10993 |
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