Significant Effective Radiative Forcing of Stratospheric Wildfire Smoke

Bibliographic Details
Title:	Significant Effective Radiative Forcing of Stratospheric Wildfire Smoke
Authors:	Cheng‐Cheng Liu, Robert W. Portmann, Shang Liu, Karen H. Rosenlof, Yifeng Peng, Pengfei Yu
Source:	Geophysical Research Letters, Vol 49, Iss 17, Pp n/a-n/a (2022)
Publisher Information:	Wiley, 2022.
Publication Year:	2022
Collection:	LCC:Geophysics. Cosmic physics
Subject Terms:	pyroCb, effective radiative forcing, stratosphere, fast adjustments, Geophysics. Cosmic physics, QC801-809
More Details:	Abstract The radiative forcing (RF) of volcanic sulfate is well quantified. However, the RF of pyrocumulonimbus (pyroCb) smoke with absorbing carbonaceous aerosols has not been considered in climate assessment reports. With the Community Earth System Model, we studied two record‐breaking wildfire events, the 2017 Pacific Northwest Event (PNE) and the 2019–2020 Australian New Year event (ANY), that perturbed stratospheric chemistry and the earth's radiation budget. We calculated a global annual‐mean effective RF (ERF) of −0.04 ± 0.02 and −0.17 ± 0.02 W/m2 at the top of the atmosphere (TOA) for PNE and ANY, respectively. The complexity of longwave RF led to an uncertainty of about 50% in the ERF at the TOA among climate models. We found that modeled ERF from wildfire smoke was 70%–270% more negative than the ERF of mass‐equivalent sulfate aerosol, highlighting its important role in the climate radiative budget.
Document Type:	article
File Description:	electronic resource
Language:	English
ISSN:	1944-8007 0094-8276
Relation:	https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007
DOI:	10.1029/2022GL100175
Access URL:	https://doaj.org/article/aec87066f22c4205a76402c2a43158df
Accession Number:	edsdoj.87066f22c4205a76402c2a43158df
Database:	Directory of Open Access Journals

More Details
ISSN:	19448007 00948276
DOI:	10.1029/2022GL100175
Published in:	Geophysical Research Letters
Language:	English