Title :

Aerosol solar radiative forcing near the Taklimakan Desert based on radiative transfer and regional meteorological simulations during the Dust Aerosol Observation-Kashi campaign

Author(s) :

Li, Li [Auteur]
Aerospace Information Research Institute [AIRICAS]
Li, Zhengqiang [Auteur]
Aerospace Information Research Institute [AIRICAS]
Chang, Wenyuan [Auteur]
Institute of Atmospheric Physics [Beijing] [IAP]
Ou, Yang [Auteur]
Aerospace Information Research Institute [AIRICAS]
Goloub, Philippe [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Li, Chengzhe [Auteur]
University of Iowa [Iowa City]
Li, Kaito [Auteur]
Aerospace Information Research Institute [AIRICAS]
Hu, Qiaoyun [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Wang, Jianping [Auteur]
Aerospace Information Research Institute [AIRICAS]
Wendisch, Manfred [Auteur]
Leipziger Institut für Meteorologie [LIM]

Journal title :

Atmospheric Chemistry and Physics

Abbreviated title :

Atmos. Chem. Phys.

Volume number :

20

Pages :

-

Publication date :

2021-03-10

ISSN :

1680-7316

HAL domain(s) :

Planète et Univers [physics]/Océan, Atmosphère

English abstract : [en]

The Taklimakan Desert is a main and continuous source of Asian dust particles causing significant direct radiative effects, which are commonly quantified by the aerosol solar radiative forcing (ASRF). To improve the accuracy ...
Show more >The Taklimakan Desert is a main and continuous source of Asian dust particles causing significant direct radiative effects, which are commonly quantified by the aerosol solar radiative forcing (ASRF). To improve the accuracy of estimates of dust ASRF, the Dust Aerosol Observation-Kashi (DAO-K) campaign was carried out near the Taklimakan Desert in April 2019. The objective of the DAO-K campaign is to provide crucial parameters needed for the calculation of ASRF, such as dust optical and microphysical properties, vertical distribution, and surface albedo. The ASRF was calculated using radiative transfer (RT) simulations based on the observed aerosol parameters, additionally considering the measured atmospheric profiles and diurnal variations of surface albedo. As a result, daily average values of ASRF of -19 W m-2 at the top of the atmosphere and -36 W m-2 at the bottom of the atmosphere were derived from the simulations conducted during the DAO-K campaign. Furthermore, the Weather Research and Forecasting model with Chemistry (WRF-Chem), with assimilation of measurements of the aerosol optical depth and particulate matter (PM) mass concentrations of particles with aerodynamic diameter smaller than 2.5 µm (PM2.5) and 10 µm (PM10), is employed to estimate the dust ASRF for comparison. The results of the ASRF simulations (RT and WRF-Chem) were evaluated using ground-based downward solar irradiance measurements, which have confirmed that the RT simulations are in good agreement with simultaneous observations, whereas the WRF-Chem estimations reveal obvious discrepancies with the solar irradiance measurements.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

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

Submission date :

2024-01-16T22:10:37Z
2024-02-12T10:48:10Z