Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere
The tropospheric and stratospheric nitrate aerosol is simulated by a sectional aerosol model coupled to the Community Earth System Model. The simulated nitrate mass fractional contribution to aerosols is significantly higher in the upper troposphere and lower stratosphere (UTLS) than that at the sur...
Published in: | Geophysical Research Letters |
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Language: | English |
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2022
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Online Access: | https://doi.org/10.1029/2022GL100258 |
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ftncar:oai:drupal-site.org:articles_25767 2023-10-01T03:59:30+02:00 Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere Yu, Pengfei (author) Lian, Siying (author) Zhu, Yunqian (author) Toon, Owen B. (author) Höpfner, Michael (author) Borrmann, Stephan (author) 2022-09-28 https://doi.org/10.1029/2022GL100258 en eng Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 articles:25767 doi:10.1029/2022GL100258 ark:/85065/d7tt4vrk Copyright 2022 American Geophysical Union. article Text 2022 ftncar https://doi.org/10.1029/2022GL100258 2023-09-04T18:21:49Z The tropospheric and stratospheric nitrate aerosol is simulated by a sectional aerosol model coupled to the Community Earth System Model. The simulated nitrate mass fractional contribution to aerosols is significantly higher in the upper troposphere and lower stratosphere (UTLS) than that at the surface. Both in situ measurements and simulations show that nitrate aerosol accounts for about 30%-40% of the aerosol mass at the tropopause of the Asian summer monsoon (ASM) region. Furthermore, simulated condensed nitric acid particles account for similar to 20% of the annual mean aerosol mass at the tropical tropopause, and over 95% in the UTLS at the South Pole in June-July-August. Our study suggests that the extremely cold ambient conditions in the UTLS of the tropics, ASM and polar regions thermodynamically favor the condensation of ammonia and nitric acid. The widely distributed nitrate aerosol in the global UTLS may be overlooked by climate models. Article in Journal/Newspaper South pole OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) South Pole Geophysical Research Letters 49 18 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The tropospheric and stratospheric nitrate aerosol is simulated by a sectional aerosol model coupled to the Community Earth System Model. The simulated nitrate mass fractional contribution to aerosols is significantly higher in the upper troposphere and lower stratosphere (UTLS) than that at the surface. Both in situ measurements and simulations show that nitrate aerosol accounts for about 30%-40% of the aerosol mass at the tropopause of the Asian summer monsoon (ASM) region. Furthermore, simulated condensed nitric acid particles account for similar to 20% of the annual mean aerosol mass at the tropical tropopause, and over 95% in the UTLS at the South Pole in June-July-August. Our study suggests that the extremely cold ambient conditions in the UTLS of the tropics, ASM and polar regions thermodynamically favor the condensation of ammonia and nitric acid. The widely distributed nitrate aerosol in the global UTLS may be overlooked by climate models. |
author2 |
Yu, Pengfei (author) Lian, Siying (author) Zhu, Yunqian (author) Toon, Owen B. (author) Höpfner, Michael (author) Borrmann, Stephan (author) |
format |
Article in Journal/Newspaper |
title |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
spellingShingle |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
title_short |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
title_full |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
title_fullStr |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
title_full_unstemmed |
Abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
title_sort |
abundant nitrate and nitric acid aerosol in the upper troposphere and lower stratosphere |
publishDate |
2022 |
url |
https://doi.org/10.1029/2022GL100258 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 articles:25767 doi:10.1029/2022GL100258 ark:/85065/d7tt4vrk |
op_rights |
Copyright 2022 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2022GL100258 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
18 |
_version_ |
1778533604015472640 |