Persistent Stratospheric Warming Due to 2019–2020 Australian Wildfire Smoke
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- Pengfei Yu
- Institute for Environmental and Climate Research Jinan University Guangzhou China
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- Sean M. Davis
- Chemical Science Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Owen B. Toon
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder CO USA
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- Robert W. Portmann
- Chemical Science Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Charles G. Bardeen
- Atmospheric Chemistry Observations and Modeling National Center for Atmospheric Research Boulder CO USA
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- John E. Barnes
- Global Monitoring Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Hagen Telg
- Global Monitoring Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Christopher Maloney
- Chemical Science Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
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- Karen H. Rosenlof
- Chemical Science Laboratory National Oceanic and Atmospheric Administration Boulder CO USA
書誌事項
- 公開日
- 2021-04-07
- 権利情報
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- http://creativecommons.org/licenses/by-nc/4.0/
- DOI
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- 10.1029/2021gl092609
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>Australian wildfires burning from December 2019 to January 2020 injected approximately 0.9 Tg of smoke into the stratosphere; this is the largest amount observed in the satellite era. A comparison of numerical simulations to satellite observations of the plume rise suggests that the smoke mass contained 2.5% black carbon. Model calculations project a 1 K warming in the stratosphere of the Southern Hemisphere midlatitudes for more than 6 months following the injection of black‐carbon containing smoke. The 2020 average global mean clear sky effective radiative forcing at top of atmosphere is estimated to be −0.03 W m<jats:sup>−2</jats:sup> with a surface value of −0.32 W m<jats:sup>−2</jats:sup>. Assuming that smoke particles coat with sulfuric acid in the stratosphere and have similar heterogeneous reaction rates as sulfate aerosol, we estimate a smoke‐induced chemical decrease in total column ozone of 10–20 Dobson units from August to December in mid‐high southern latitudes.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 48 (7), e2021GL092609-, 2021-04-07
American Geophysical Union (AGU)
