Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosres.2015.12.004 |
Aerosol direct radiative forcing in desert and semi-desert regions of northwestern China | |
Xin, Jinyuan4,5; Gong, Chongshui1,2,3,5; Wang, Shigong4; Wang, Yuesi5 | |
通讯作者 | Xin, Jinyuan ; Gong, Chongshui |
来源期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2016 |
卷号 | 171页码:56-65 |
英文摘要 | The optical properties of dust aerosols were measured using narrow-band data from a portable sun photometer at four desert and semi-desert stations in northwestern China from 2004 to 2007. Ground-based and satellite observations indicated absorbing dust aerosol loading over the region surrounded by eight large-scale deserts. Radiation forcing was identified by using the Santa Barbara DISORT Atmospheric Radiative Transfer (SBDART) model. The ranges of annual mean aerosol optical depth (AOD), Angstrom exponents, and single-scattering albedo (SSA) were from 025 to 035, from -0.73 to 1.18, and from 0.77 to 0.86, respectively. The ranges of annual mean aerosol direct radiative forcing values at the top of the atmosphere (TOA), mid-atmosphere, and on the surface were from 3.9 to 12.0, from 50.0 to 53.1, and from -39.1 to -48.1 W/m(2), respectively. The aerosols’ optical properties and radiative characteristics showed strong seasonal variations in both the desert and semi-desert regions. Strong winds and relatively low humidity will lead dust aerosols in the atmosphere to an increase, which played greatly affected these optical properties during spring and winter in northwestern China. Based on long-term observations and retrieved data, aerosol direct radiative forcing was confirmed to heat the atmosphere (50-53 W/m(2)) and cool the surface (-39 to -48 W/m(2)) above the analyzed desert. Radiative forcing in the atmosphere in spring and winter was 18 to 21 W/m(2) higher than other two seasons. Based on the dust sources around the sites, the greater the AOD, the more negative the forcing. The annual averaged heating rates for aerosols close to the ground (1 km) were approximately 0.80-0.85 K/day. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Aerosol optical depth (AOD) Angstrom exponent Single scattering albedo (SSA) Aerosol radiative forcing Dust aerosol |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000369681200006 |
WOS关键词 | OPTICAL-PROPERTIES ; ANTHROPOGENIC AEROSOLS ; NORTHERN CHINA ; DUST AEROSOLS ; WORLDWIDE LOCATIONS ; CLIMATE RESPONSE ; SAHARAN DUST ; PRECIPITATION ; ABSORPTION ; ATMOSPHERE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源机构 | 中国科学院大气物理研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/191640 |
作者单位 | 1.China Meteorol Adm, Inst Arid Meteorol, Lanzhou 730020, Peoples R China; 2.China Meteorol Adm, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou 730020, Peoples R China; 3.China Meteorol Adm, Key Lab Arid Climat Chance & Disaster Reduct, Lanzhou 730020, Peoples R China; 4.Chengdu Univ Informat Technol, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Peoples R China; 5.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Xin, Jinyuan,Gong, Chongshui,Wang, Shigong,et al. Aerosol direct radiative forcing in desert and semi-desert regions of northwestern China[J]. 中国科学院大气物理研究所,2016,171:56-65. |
APA | Xin, Jinyuan,Gong, Chongshui,Wang, Shigong,&Wang, Yuesi.(2016).Aerosol direct radiative forcing in desert and semi-desert regions of northwestern China.ATMOSPHERIC RESEARCH,171,56-65. |
MLA | Xin, Jinyuan,et al."Aerosol direct radiative forcing in desert and semi-desert regions of northwestern China".ATMOSPHERIC RESEARCH 171(2016):56-65. |
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