Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model
<p>Fire emissions influence radiation, climate, and ecosystems through aerosol radiative effects. These can drive rapid atmospheric and land surface adjustments which feed back to affect fire emissions. However, the magnitude of such feedback remains unclear on the global scale. Here, we quant...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-09-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/22/12353/2022/acp-22-12353-2022.pdf |
| _version_ | 1798031875893100544 |
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| author | C. Tian C. Tian X. Yue J. Zhu H. Liao Y. Yang Y. Lei X. Zhou H. Zhou Y. Ma Y. Cao |
| author_facet | C. Tian C. Tian X. Yue J. Zhu H. Liao Y. Yang Y. Lei X. Zhou H. Zhou Y. Ma Y. Cao |
| author_sort | C. Tian |
| collection | DOAJ |
| description | <p>Fire emissions influence radiation, climate, and ecosystems through aerosol
radiative effects. These can drive rapid atmospheric and land surface
adjustments which feed back to affect fire emissions. However, the magnitude
of such feedback remains unclear on the global scale. Here, we quantify the
impacts of fire aerosols on radiative forcing and the fast atmospheric
response through direct, indirect, and albedo effects based on the two-way
simulations using a well-established chemistry–climate–vegetation model.
Globally, fire emissions cause a reduction of 0.565 <span class="inline-formula">±</span> 0.166 <span class="inline-formula">W m<sup>−2</sup></span>
in net radiation at the top of the atmosphere with dominant contributions by the
aerosol indirect effect (AIE). Consequently, terrestrial surface air
temperature decreases by 0.061 <span class="inline-formula">±</span> 0.165 <span class="inline-formula"><sup>∘</sup>C</span> with coolings of
<span class="inline-formula">>0.25</span> <span class="inline-formula"><sup>∘</sup>C</span> over the eastern Amazon, the western US, and boreal
Asia. Both the aerosol direct effect (ADE) and AIE contribute to such cooling,
while the aerosol albedo effect (AAE) exerts an offset warming, especially
at high latitudes. Land precipitation decreases by 0.180 <span class="inline-formula">±</span> 0.966 <span class="inline-formula">mm per month</span> (1.78 %<span class="inline-formula"> ±</span> 9.56 %) mainly due to the inhibition in central
Africa by AIE. Such a rainfall deficit further reduces regional leaf area
index (LAI) and lightning ignitions, leading to changes in fire emissions.
Globally, fire emissions reduce by 2 %–3 % because of the fire-induced
fast responses in humidity, lightning, and LAI. The fire aerosol radiative
effects may cause larger perturbations to climate systems with likely more
fires under global warming.</p> |
| first_indexed | 2024-04-11T20:04:48Z |
| format | Article |
| id | doaj.art-79da65728cc143a49b45797f38fe27d4 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-11T20:04:48Z |
| publishDate | 2022-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-79da65728cc143a49b45797f38fe27d42022-12-22T04:05:23ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242022-09-0122123531236610.5194/acp-22-12353-2022Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation modelC. Tian0C. Tian1X. Yue2J. Zhu3H. Liao4Y. Yang5Y. Lei6X. Zhou7H. Zhou8Y. Ma9Y. Cao10Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaClimate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, 100081, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, ChinaClimate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, ChinaClimate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, ChinaClimate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China<p>Fire emissions influence radiation, climate, and ecosystems through aerosol radiative effects. These can drive rapid atmospheric and land surface adjustments which feed back to affect fire emissions. However, the magnitude of such feedback remains unclear on the global scale. Here, we quantify the impacts of fire aerosols on radiative forcing and the fast atmospheric response through direct, indirect, and albedo effects based on the two-way simulations using a well-established chemistry–climate–vegetation model. Globally, fire emissions cause a reduction of 0.565 <span class="inline-formula">±</span> 0.166 <span class="inline-formula">W m<sup>−2</sup></span> in net radiation at the top of the atmosphere with dominant contributions by the aerosol indirect effect (AIE). Consequently, terrestrial surface air temperature decreases by 0.061 <span class="inline-formula">±</span> 0.165 <span class="inline-formula"><sup>∘</sup>C</span> with coolings of <span class="inline-formula">>0.25</span> <span class="inline-formula"><sup>∘</sup>C</span> over the eastern Amazon, the western US, and boreal Asia. Both the aerosol direct effect (ADE) and AIE contribute to such cooling, while the aerosol albedo effect (AAE) exerts an offset warming, especially at high latitudes. Land precipitation decreases by 0.180 <span class="inline-formula">±</span> 0.966 <span class="inline-formula">mm per month</span> (1.78 %<span class="inline-formula"> ±</span> 9.56 %) mainly due to the inhibition in central Africa by AIE. Such a rainfall deficit further reduces regional leaf area index (LAI) and lightning ignitions, leading to changes in fire emissions. Globally, fire emissions reduce by 2 %–3 % because of the fire-induced fast responses in humidity, lightning, and LAI. The fire aerosol radiative effects may cause larger perturbations to climate systems with likely more fires under global warming.</p>https://acp.copernicus.org/articles/22/12353/2022/acp-22-12353-2022.pdf |
| spellingShingle | C. Tian C. Tian X. Yue J. Zhu H. Liao Y. Yang Y. Lei X. Zhou H. Zhou Y. Ma Y. Cao Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model Atmospheric Chemistry and Physics |
| title | Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model |
| title_full | Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model |
| title_fullStr | Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model |
| title_full_unstemmed | Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model |
| title_short | Fire–climate interactions through the aerosol radiative effect in a global chemistry–climate–vegetation model |
| title_sort | fire climate interactions through the aerosol radiative effect in a global chemistry climate vegetation model |
| url | https://acp.copernicus.org/articles/22/12353/2022/acp-22-12353-2022.pdf |
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