Persistent stratospheric warming due to 2019-20 Australian wildfire smoke

Yu, Pengfei; Davis, Sean M.; Toon, Owen B.; Portmann, Robert W.; Bardeen, Charles G.; Barnes, John E.; Telg, Hagen; Maloney, Christopher; Rosenlof, Karen H.

doi:10.1029/2021GL092609

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Persistent stratospheric warming due to 2019-20 Australian wildfire smoke

2021
By Yu, Pengfei ; Davis, Sean M. ; Toon, Owen B. ; ...
Source: Geophysical Research Letters, 48, e2021GL092609

[PDF-996.75 KB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Yu, Pengfei ; Davis, Sean M. ; Toon, Owen B. ; Portmann, Robert W. ; Bardeen, Charles G. ; ... More +

Yu, Pengfei ; Davis, Sean M. ; Toon, Owen B. ; Portmann, Robert W. ; Bardeen, Charles G. ; Barnes, John E. ; Telg, Hagen ; Maloney, Christopher ; Rosenlof, Karen H. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CSL (Chemical Sciences Laboratory) ; GML (Global Monitoring Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; CSL (Chemical Sciences Laboratory) ; GML (Global Monitoring Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

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−2 with a surface value of −0.32 W m−2. 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.
Keywords:

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Stratosphere Wildfires
Source:

Geophysical Research Letters, 48, e2021GL092609
DOI:

https://doi.org/10.1029/2021GL092609
Document Type:

Journal Article
Place as Subject:

Australia
Rights Information:

CC BY-NC
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Submitted
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urn:sha256:3c04a2ed5798e38ab395fedaf954a14ebf3764dee0ebf1db9070c7d53dae25ea
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https://repository.library.noaa.gov/view/noaa/40175/noaa_40175_DS1.pdf
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Persistent stratospheric warming due to 2019-20 Australian wildfire smoke

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