Title :

Multi-angular polarimetric remote sensing to pinpoint global aerosol absorption and direct radiative forcing.

Author(s) :

Chen, Cheng [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Doubovik, Oleg [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Schuster, Gregory L. [Auteur]
NASA Langley Research Center [Hampton] [LaRC]
Chin, Mian [Auteur]
NASA Goddard Space Flight Center [GSFC]
Henze, Daven K. [Auteur]
Department of Mechanical Engineering [Boulder]
Lapyonok, Tatyana [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Li, Zhengqiang [Auteur]
Aerospace Information Research Institute [AIRICAS]
Derimian, Yevgeny [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Zhang, Ying [Auteur]
Aerospace Information Research Institute [AIRICAS]

Journal title :

Nature Communications

Abbreviated title :

Nat Commun

Volume number :

13

Pages :

7459

Publication date :

2022-12-10

ISSN :

2041-1723

English abstract : [en]

Abstract Quantitative estimations of atmospheric aerosol absorption are rather uncertain due to the lack of reliable information about the global distribution. Because the information about aerosol properties is commonly ...
Show more >Abstract Quantitative estimations of atmospheric aerosol absorption are rather uncertain due to the lack of reliable information about the global distribution. Because the information about aerosol properties is commonly provided by single-viewing photometric satellite sensors that are not sensitive to aerosol absorption. Consequently, the uncertainty in aerosol radiative forcing remains one of the largest in the Assessment Reports of the Intergovernmental Panel on Climate Change (IPCC AR5 and AR6). Here, we use multi-angular polarimeters (MAP) to provide constraints on emission of absorbing aerosol species and estimate global aerosol absorption optical depth (AAOD) and its climate effect. Our estimate of modern-era mid-visible AAOD is 0.0070 that is higher than IPCC by a factor of 1.3-1.8. The black carbon instantaneous direct radiative forcing (BC DRF) is +0.33 W/m 2 [+0.17, +0.54]. The MAP constraint narrows the 95% confidence interval of BC DRF by a factor of 2 and boosts confidence in its spatial distribution.Show less >

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Submission date :

2024-01-16T22:02:39Z
2024-02-09T14:16:27Z