Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations
Although stratospheric ozone loss occurs every year in Antarctica, Arctic ozone loss occurs only when stratospheric temperature gets low. Recently, substantial ozone loss occurred in Arctic in 1997, 2011, and 2020. Especially, the magnitude of Arctic ozone losses in 2011 and 2020 was comparable to t...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5015955 2023-06-11T04:06:54+02:00 Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations Nakajima, H. Ogawa, M. Kita, K. Pitts, M. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015955 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-0468 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015955 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-0468 2023-04-23T23:38:34Z Although stratospheric ozone loss occurs every year in Antarctica, Arctic ozone loss occurs only when stratospheric temperature gets low. Recently, substantial ozone loss occurred in Arctic in 1997, 2011, and 2020. Especially, the magnitude of Arctic ozone losses in 2011 and 2020 was comparable to that of in Antarctica. Satellite CALIPSO was launched in 2006, and is still in operation and measuring global cloud properties using two-wavelength lidars. It measures distribution and characteristics of polar stratospheric clouds (PSC) over both polar regions. In this study, we analyzed characteristics of Arctic PSCs in 2011 and 2020, and their effects on polar ozone loss.In this analysis, distribution and types of Arctic PSC was analyzed for the altitudes of 20, 17.5, and 15 km for each CALIPSO orbit (15 orbits per day in maximum) from January to March in 2011 and 2020. Local temperature and HNO3 amount by Aura/MLS were also analyzed to see the PSC formation condition and the magnitude of denitrification. As a result, there were no major differences between the appearance of PSCs in January and February. However, stratospheric temperature was low in 2020 compared with 2011 in March, and appearance of PSC was greater in 2020. Ozone depletion started to occur in March when sunlight was available over the Arctic, and record-high ozone depletion was observed in 2020. The reason of this low temperature in 2020 could be attributed to the unusually strong polar vortex over the Arctic in this year. Conference Object Antarc* Antarctica Arctic GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic |
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Open Polar |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
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ftgfzpotsdam |
language |
English |
description |
Although stratospheric ozone loss occurs every year in Antarctica, Arctic ozone loss occurs only when stratospheric temperature gets low. Recently, substantial ozone loss occurred in Arctic in 1997, 2011, and 2020. Especially, the magnitude of Arctic ozone losses in 2011 and 2020 was comparable to that of in Antarctica. Satellite CALIPSO was launched in 2006, and is still in operation and measuring global cloud properties using two-wavelength lidars. It measures distribution and characteristics of polar stratospheric clouds (PSC) over both polar regions. In this study, we analyzed characteristics of Arctic PSCs in 2011 and 2020, and their effects on polar ozone loss.In this analysis, distribution and types of Arctic PSC was analyzed for the altitudes of 20, 17.5, and 15 km for each CALIPSO orbit (15 orbits per day in maximum) from January to March in 2011 and 2020. Local temperature and HNO3 amount by Aura/MLS were also analyzed to see the PSC formation condition and the magnitude of denitrification. As a result, there were no major differences between the appearance of PSCs in January and February. However, stratospheric temperature was low in 2020 compared with 2011 in March, and appearance of PSC was greater in 2020. Ozone depletion started to occur in March when sunlight was available over the Arctic, and record-high ozone depletion was observed in 2020. The reason of this low temperature in 2020 could be attributed to the unusually strong polar vortex over the Arctic in this year. |
format |
Conference Object |
author |
Nakajima, H. Ogawa, M. Kita, K. Pitts, M. |
spellingShingle |
Nakajima, H. Ogawa, M. Kita, K. Pitts, M. Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
author_facet |
Nakajima, H. Ogawa, M. Kita, K. Pitts, M. |
author_sort |
Nakajima, H. |
title |
Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
title_short |
Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
title_full |
Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
title_fullStr |
Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
title_full_unstemmed |
Relationship between appearance of PSCs and ozone destruction over Northern polar region in 2011 and 2020 based on CALIPSO observations |
title_sort |
relationship between appearance of pscs and ozone destruction over northern polar region in 2011 and 2020 based on calipso observations |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015955 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarc* Antarctica Arctic |
genre_facet |
Antarc* Antarctica Arctic |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-0468 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015955 |
op_doi |
https://doi.org/10.57757/IUGG23-0468 |
_version_ |
1768379105217085440 |