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题名: Shortwave radiative closure experiment and direct forcing of dust aerosol over northwestern China
作者: Ge, JM(葛觐铭); Huang, JP(黄建平); Su, J(苏婧); Bi, JR(闭建荣); Fu, Q
收录类别: SCIE ; EI
出版日期: 2011-12-20
刊名: GEOPHYSICAL RESEARCH LETTERS
卷号: 38, 页码:-
出版者: AMER GEOPHYSICAL UNION
出版地: WASHINGTON
英文摘要: Modeled and observed solar diffuse fluxes at the surface usually have unacceptably large discrepancies. It is necessary to address and resolve these discrepancies in order to accurately calculate a reliable aerosol direct radiative forcing (DRF). We present and compare two methods of deriving dust aerosol optical properties from the MFRSR (Multi-Filter Rotating Shadowband Radiometer) observations and the AERONET products. The single-scattering albedo (SSA) values from MFRSR are found to be 10% less than those from the AERONET. This difference is mainly due to the different imaginary part of refractive index retrieved by the MFRSR compared to AERONET. These two sets of dust aerosol optical properties are used in the SBDART model to simulate the shortwave fluxes that are compared with the surface observations to perform the radiative closure experiment. The diffuse simulations using the AERONET-derived aerosol SSA may have significant discrepancies compared with the observed diffuse irradiances. The DRFs at the top of atmosphere (TOA) simulated with the MFRSR-derived aerosol optical properties are positive while the DRFs with the AERONET are negative. The sign of the DRFs at the surface and in the atmosphere using the MFRSR is the same as those using the AERONET while the magnitudes from the MFRSR are much larger. It indicates that dust aerosols with higher absorption as derived from the MFRSR heat the aerosol layer but cool the surface much more than those based on the AERONET, which may have an important impact on the boundary layer processes. Citation: Ge, J. M., J. P. Huang, J. Su, J. R. Bi, and Q. Fu (2011), Shortwave radiative closure experiment and direct forcing of dust aerosol over northwestern China, Geophys. Res. Lett., 38, L24803, doi:10.1029/2011GL049571.
作者部门: [Ge, J. M. ; Huang, J. P. ; Su, J. ; Bi, J. R. ; Fu, Q.] Lanzhou Univ, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China ; [Ge, J. M. ; Huang, J. P. ; Su, J. ; Bi, J. R. ; Fu, Q.] Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China ; [Fu, Q.] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA
通讯作者: Ge, JM (reprint author), Lanzhou Univ, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China.
学科分类: Geology
文章类型: Article
所属项目编号: National Basic Research Program of China [2012CB955302] ; National Science Foundation of China [41105108, 41175042, 40725015] ; Fundamental Research Funds for the Central University [lzujbky-2011-2, lzujbky-2011-4] ; U.S. Department of Energy [DE-FG02-09ER64769]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 中央高校基本科研业务费专项资金 ; 美国能源部项目
项目资助者: NSFC ; MOST ; LZU ; US DOE
语种: 英语
DOI: 10.1029/2011GL049571
ISSN号: 0094-8276
WOS记录号: WOS:000298498800003
EI记录号: 20115214637203
第一机构:
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/119253
Appears in Collections:大气科学学院_期刊论文

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Recommended Citation:
Ge, JM,Huang, JP,Su, J,et al. Shortwave radiative closure experiment and direct forcing of dust aerosol over northwestern China[J]. GEOPHYSICAL RESEARCH LETTERS,2011,38:-.
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