Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-9949-2019 |
The remote sensing of radiative forcing by light-absorbing particles (LAPs) in seasonal snow over northeastern China | |
Pu, Wei1; Cui, Jiecan1; Shi, Tenglong1; Zhang, Xuelei3; He, Cenlin4; Wang, Xin1,2 | |
2019-08-08 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:15页码:9949-9968 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Light-absorbing particles (LAPs) deposited on snow can decrease snow albedo and affect climate through snow-albedo radiative forcing. In this study, we use MODIS observations combined with a snow-albedo model (SNICAR - Snow, Ice, and Aerosol Radiative) and a radiative transfer model (SBDART - Santa Barbara DISORT Atmospheric Radiative Transfer) to retrieve the instantaneous spectrally integrated radiative forcing at the surface by LAPs in snow (RFMODISLAPs) under clear-sky conditions at the time of MODIS Aqua overpass across northeastern China (NEC) in JanuaryFebruary from 2003 to 2017. RFMODISLAPs presents distinct spatial variability, with the minimum (22.3 W m(-2)) in western NEC and the maximum (64.6 W m(-2)) near industrial areas in central NEC. The regional mean RFMODISLAPs is similar to 45.1 +/- 6.8 W m(-2) in NEC. The positive (negative) uncertainties of retrieved RFMODISLAPs due to atmospheric correction range from 14% to 57% (14% to 47 %), and the uncertainty value basically decreases with the increased RFMODISLAPs. We attribute the variations of radiative forcing based on remote sensing and find that the spatial variance of RFMODISLAPs in NEC is 74.6% due to LAPs and 21.2% and 4.2% due to snow grain size and solar zenith angle. Furthermore, based on multiple linear regression, the BC dry and wet deposition and snowfall could explain 84% of the spatial variance of LAP contents, which confirms the reasonability of the spatial patterns of retrieved RFMODISLAPs in NEC. We validate RFMODISLAPs using in situ radiative forcing estimates. We find that the biases in RFMODISLAPs are negatively correlated with LAP concentrations and range from similar to 5% to similar to 350% in NEC. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000480289900002 |
WOS关键词 | BLACK-CARBON ; GRAIN-SIZE ; OPTICAL-PROPERTIES ; MULTIPLE-SCATTERING ; SPECTRAL ALBEDO ; ORGANIC-CARBON ; COVERED AREA ; DUST ; IMPURITIES ; CLIMATE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185930 |
专题 | 地球科学 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Gansu, Peoples R China; 2.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China; 3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China; 4.Natl Ctr Atmospher Res, Boulder, CO 80301 USA |
推荐引用方式 GB/T 7714 | Pu, Wei,Cui, Jiecan,Shi, Tenglong,et al. The remote sensing of radiative forcing by light-absorbing particles (LAPs) in seasonal snow over northeastern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(15):9949-9968. |
APA | Pu, Wei,Cui, Jiecan,Shi, Tenglong,Zhang, Xuelei,He, Cenlin,&Wang, Xin.(2019).The remote sensing of radiative forcing by light-absorbing particles (LAPs) in seasonal snow over northeastern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(15),9949-9968. |
MLA | Pu, Wei,et al."The remote sensing of radiative forcing by light-absorbing particles (LAPs) in seasonal snow over northeastern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.15(2019):9949-9968. |
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