Short- and medium-term atmospheric constituent effects of very large solar proton events
International audience Solar eruptions sometimes produce protons, which impact the Earth's atmosphere. These solar proton events (SPEs) generally last a few days and produce high energy particles that precipitate into the Earth's atmosphere. The protons cause ionization and dissociation pr...
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ftccsdartic:oai:HAL:hal-00296446v1 2023-05-15T18:02:18+02:00 Short- and medium-term atmospheric constituent effects of very large solar proton events Jackman, C. H. Marsh, D. R. Vitt, F. M. Garcia, R. R. Fleming, E. L. Labow, G. J. Randall, C. E. López-Puertas, M. Funke, B. Von Clarmann, T. Stiller, G. P. NASA Goddard Space Flight Center (GSFC) National Center for Atmospheric Research Boulder (NCAR) University of Colorado Boulder Instituto de Astrofísica de Andalucía (IAA) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) 2008-02-14 https://hal.archives-ouvertes.fr/hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446/document https://hal.archives-ouvertes.fr/hal-00296446/file/acp-8-765-2008.pdf en eng HAL CCSD European Geosciences Union hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446/document https://hal.archives-ouvertes.fr/hal-00296446/file/acp-8-765-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-00296446 Atmospheric Chemistry and Physics, European Geosciences Union, 2008, 8 (3), pp.765-785 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2021-09-12T01:06:47Z International audience Solar eruptions sometimes produce protons, which impact the Earth's atmosphere. These solar proton events (SPEs) generally last a few days and produce high energy particles that precipitate into the Earth's atmosphere. The protons cause ionization and dissociation processes that ultimately lead to an enhancement of odd-hydrogen and odd-nitrogen in the polar cap regions (>60° geomagnetic latitude). We have used the Whole Atmosphere Community Climate Model (WACCM3) to study the atmospheric impact of SPEs over the period 1963?2005. The very largest SPEs were found to be the most important and caused atmospheric effects that lasted several months after the events. We present the short- and medium-term (days to a few months) atmospheric influence of the four largest SPEs in the past 45 years (August 1972; October 1989; July 2000; and October?November 2003) as computed by WACCM3 and observed by satellite instruments. Polar mesospheric NO x (NO+NO 2 ) increased by over 50 ppbv and mesospheric ozone decreased by over 30% during these very large SPEs. Changes in HNO 3 , N 2 O 5 , ClONO 2 , HOCl, and ClO were indirectly caused by the very large SPEs in October?November 2003, were simulated by WACCM3, and previously measured by Envisat Michelson Interferometer for Passive Atmospheric Sounding (MIPAS). WACCM3 output was also represented by sampling with the MIPAS averaging kernel for a more valid comparison. Although qualitatively similar, there are discrepancies between the model and measurement with WACCM3 predicted HNO 3 and ClONO 2 enhancements being smaller than measured and N 2 O 5 enhancements being larger than measured. The HOCl enhancements were fairly similar in amounts and temporal variation in WACCM3 and MIPAS. WACCM3 simulated ClO decreases below 50 km, whereas MIPAS mainly observed increases, a very perplexing difference. Upper stratospheric and lower mesospheric NO x increased by over 10 ppbv and was transported during polar night down to the middle stratosphere in several weeks ... Article in Journal/Newspaper polar night Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Jackman, C. H. Marsh, D. R. Vitt, F. M. Garcia, R. R. Fleming, E. L. Labow, G. J. Randall, C. E. López-Puertas, M. Funke, B. Von Clarmann, T. Stiller, G. P. Short- and medium-term atmospheric constituent effects of very large solar proton events |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Solar eruptions sometimes produce protons, which impact the Earth's atmosphere. These solar proton events (SPEs) generally last a few days and produce high energy particles that precipitate into the Earth's atmosphere. The protons cause ionization and dissociation processes that ultimately lead to an enhancement of odd-hydrogen and odd-nitrogen in the polar cap regions (>60° geomagnetic latitude). We have used the Whole Atmosphere Community Climate Model (WACCM3) to study the atmospheric impact of SPEs over the period 1963?2005. The very largest SPEs were found to be the most important and caused atmospheric effects that lasted several months after the events. We present the short- and medium-term (days to a few months) atmospheric influence of the four largest SPEs in the past 45 years (August 1972; October 1989; July 2000; and October?November 2003) as computed by WACCM3 and observed by satellite instruments. Polar mesospheric NO x (NO+NO 2 ) increased by over 50 ppbv and mesospheric ozone decreased by over 30% during these very large SPEs. Changes in HNO 3 , N 2 O 5 , ClONO 2 , HOCl, and ClO were indirectly caused by the very large SPEs in October?November 2003, were simulated by WACCM3, and previously measured by Envisat Michelson Interferometer for Passive Atmospheric Sounding (MIPAS). WACCM3 output was also represented by sampling with the MIPAS averaging kernel for a more valid comparison. Although qualitatively similar, there are discrepancies between the model and measurement with WACCM3 predicted HNO 3 and ClONO 2 enhancements being smaller than measured and N 2 O 5 enhancements being larger than measured. The HOCl enhancements were fairly similar in amounts and temporal variation in WACCM3 and MIPAS. WACCM3 simulated ClO decreases below 50 km, whereas MIPAS mainly observed increases, a very perplexing difference. Upper stratospheric and lower mesospheric NO x increased by over 10 ppbv and was transported during polar night down to the middle stratosphere in several weeks ... |
author2 |
NASA Goddard Space Flight Center (GSFC) National Center for Atmospheric Research Boulder (NCAR) University of Colorado Boulder Instituto de Astrofísica de Andalucía (IAA) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) |
format |
Article in Journal/Newspaper |
author |
Jackman, C. H. Marsh, D. R. Vitt, F. M. Garcia, R. R. Fleming, E. L. Labow, G. J. Randall, C. E. López-Puertas, M. Funke, B. Von Clarmann, T. Stiller, G. P. |
author_facet |
Jackman, C. H. Marsh, D. R. Vitt, F. M. Garcia, R. R. Fleming, E. L. Labow, G. J. Randall, C. E. López-Puertas, M. Funke, B. Von Clarmann, T. Stiller, G. P. |
author_sort |
Jackman, C. H. |
title |
Short- and medium-term atmospheric constituent effects of very large solar proton events |
title_short |
Short- and medium-term atmospheric constituent effects of very large solar proton events |
title_full |
Short- and medium-term atmospheric constituent effects of very large solar proton events |
title_fullStr |
Short- and medium-term atmospheric constituent effects of very large solar proton events |
title_full_unstemmed |
Short- and medium-term atmospheric constituent effects of very large solar proton events |
title_sort |
short- and medium-term atmospheric constituent effects of very large solar proton events |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446/document https://hal.archives-ouvertes.fr/hal-00296446/file/acp-8-765-2008.pdf |
genre |
polar night |
genre_facet |
polar night |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-00296446 Atmospheric Chemistry and Physics, European Geosciences Union, 2008, 8 (3), pp.765-785 |
op_relation |
hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446 https://hal.archives-ouvertes.fr/hal-00296446/document https://hal.archives-ouvertes.fr/hal-00296446/file/acp-8-765-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766172111198486528 |