Spurious Late Historical‐Era Warming in CESM2 Driven by Prescribed Biomass Burning Emissions

Fasullo, J. T.; Lamarque, Jean‐Francois; Hannay, Cecile; Rosenbloom, Nan; Tilmes, Simone; DeRepentigny, Patricia; Jahn, Alexandra; Deser, Clara

doi:10.1029/2021gl097420

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Spurious Late Historical‐Era Warming in CESM2 Driven by Prescribed Biomass Burning Emissions

2022
By Fasullo, J. T. ; Lamarque, Jean‐Francois ; Hannay, Cecile ; ...
Source: Geophysical Research Letters, 49(2)

[PDF-1.54 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Fasullo, J. T. ; Lamarque, Jean‐Francois ; Hannay, Cecile ; Rosenbloom, Nan ; Tilmes, Simone ; ... More +

Fasullo, J. T. ; Lamarque, Jean‐Francois ; Hannay, Cecile ; Rosenbloom, Nan ; Tilmes, Simone ; DeRepentigny, Patricia ; Jahn, Alexandra ; Deser, Clara Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

A spurious increase in the interannual variability of prescribed biomass burning (BB) emissions in the CMIP6 forcing database during the satellite era of wildfire monitoring (1997–2014) is found to lead to warming in the Northern Hemisphere extratropics in simulations with the Community Earth System Model version 2 (CESM2). Using targeted sensitivity experiments with the CESM2 in which prescribed BB emissions are homogenized and variability is removed, we show that the warming is specifically attributable to BB variability from 40° to 70°N and arises from a net thinning of the cloud field and an associated increase in absorbed solar radiation. Our results also demonstrate the potential pitfalls of introducing discontinuities in
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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 49(2)
DOI:

https://doi.org/10.1029/2021gl097420
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0094-8276;1944-8007;
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:79721512e0da8eff0260be14576309668ec265c0c3096352093f8323cc487660
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https://repository.library.noaa.gov/view/noaa/53099/noaa_53099_DS1.pdf
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