气候变化领域集成服务门户(CCPortal): Aerosol Direct Radiative Effects at the ARM SGP and TWP Sites: Clear Skies

CCPortal

DOI	10.1029/2020JD033663
	Aerosol Direct Radiative Effects at the ARM SGP and TWP Sites: Clear Skies
	Wu X.; Balmes K.A.; Fu Q.
发表日期	2021
ISSN	2169897X
卷号	126 期号:5
英文摘要	The clear-sky aerosol direct radiative effect (DRE) was estimated at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) and Tropical Western Pacific (TWP) sites. The NASA Langley Fu-Liou radiation model was used with observed inputs including aerosol vertical extinction profile from the Raman lidar; spectral aerosol optical depth (AOD), single-scattering albedo and asymmetry factor from Aerosol Robotic Network; temperature and water vapor profiles from radiosondes; and surface shortwave (SW) spectral albedo from radiometers. A radiative closure experiment was conducted for clear-sky conditions. The mean differences of modeled and observed surface downwelling SW total fluxes were 1 W m−2 at SGP and 2 W m−2 at TWP, which are within observational uncertainty. At SGP, the estimated annual mean clear-sky aerosol DRE is −3.00 W m−2 at the top of atmosphere (TOA) and −6.85 W m−2 at the surface. The strongest aerosol DRE of −4.81 (−10.77) W m−2 at the TOA (surface) are in the summer when AODs are largest. The weakest aerosol DRE of −1.28 (−2.77) W m−2 at the TOA (surface) are in November–January when AODs and single-scattering albedos are lowest. At TWP, the annual mean clear-sky DRE is −2.82 W m−2 at the TOA and −10.34 W m−2 at the surface. The strongest aerosol DRE of −5.95 (−22.20) W m−2 at the TOA (surface) are in November (October) due to the biomass burning season’s peak. The weakest aerosol DRE of −0.96 (−4.16) W m−2 at the TOA (surface) are in March (April) when AODs are smallest. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185445
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Wu X.,Balmes K.A.,Fu Q.. Aerosol Direct Radiative Effects at the ARM SGP and TWP Sites: Clear Skies[J],2021,126(5).
APA	Wu X.,Balmes K.A.,&Fu Q..(2021).Aerosol Direct Radiative Effects at the ARM SGP and TWP Sites: Clear Skies.Journal of Geophysical Research: Atmospheres,126(5).
MLA	Wu X.,et al."Aerosol Direct Radiative Effects at the ARM SGP and TWP Sites: Clear Skies".Journal of Geophysical Research: Atmospheres 126.5(2021).