Abundant Nitrate and Nitric Acid Aerosol in the Upper Troposphere and Lower Stratosphere
Abstract 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 a...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-09-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2022GL100258 |
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| author | Pengfei Yu Siying Lian Yunqian Zhu Owen B. Toon Michael Höpfner Stephan Borrmann |
| author_facet | Pengfei Yu Siying Lian Yunqian Zhu Owen B. Toon Michael Höpfner Stephan Borrmann |
| author_sort | Pengfei Yu |
| collection | DOAJ |
| description | Abstract 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 ∼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. |
| format | Article |
| id | doaj-art-cb2e883b34974489a1d70f72dcaeea34 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-cb2e883b34974489a1d70f72dcaeea342025-08-20T02:10:39ZengWileyGeophysical Research Letters0094-82761944-80072022-09-014918n/an/a10.1029/2022GL100258Abundant Nitrate and Nitric Acid Aerosol in the Upper Troposphere and Lower StratospherePengfei Yu0Siying Lian1Yunqian Zhu2Owen B. Toon3Michael Höpfner4Stephan Borrmann5Institute for Environmental and Climate Research Jinan University Guangzhou ChinaInstitute for Environmental and Climate Research Jinan University Guangzhou ChinaLaboratory of Atmospheric and Space Sciences University of Colorado, Boulder Boulder CO USALaboratory of Atmospheric and Space Sciences University of Colorado, Boulder Boulder CO USAInstitute of Meteorology and Climate Research Karlsruhe Institute of Technology Karlsruhe GermanyJohannes Gutenberg University Mainz GermanyAbstract 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 ∼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.https://doi.org/10.1029/2022GL100258nitrateNATUTLSaerosolstratosphere |
| spellingShingle | Pengfei Yu Siying Lian Yunqian Zhu Owen B. Toon Michael Höpfner Stephan Borrmann Abundant Nitrate and Nitric Acid Aerosol in the Upper Troposphere and Lower Stratosphere Geophysical Research Letters nitrate NAT UTLS aerosol stratosphere |
| title | 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_short | 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 |
| topic | nitrate NAT UTLS aerosol stratosphere |
| url | https://doi.org/10.1029/2022GL100258 |
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