Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024573 |
Toward Understanding Direct Absorption and Grain Size Feedbacks by Dust Radiative Forcing in Snow With Coupled Snow Physical and Radiative Transfer Modeling | |
Skiles, S. McKenzie1; Painter, Thomas H.2 | |
2019-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:8页码:7362-7378 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The darkening of the snow surface by light-absorbing particles impacts snow albedo directly by increasing absorption of shortwave radiation in the visible wavelengths. This indirectly enhances the rate of snow grain coarsening, which determines absorption in the near-infrared wavelengths. In combination, these processes reduce snow albedo over the full range of snow reflectance, accelerating melt, and impacting regional climate and hydrology. Accurate parameterizations of snow albedo should represent both the direct and indirect radiative impacts. Here dust-influenced snow cover evolution was simulated at Senator Beck Basin Study Area, San Juan Mountains, CO with a multilayer physically based snow process model. The model was modified to track dust stratigraphy, and coupled to a snow/aerosol radiative transfer model to inform reflected shortwave radiation based on snow properties, dust concentrations, and region-specific dust optical properties. This varies from previous efforts to constrain the magnitude of accelerated melt due to dust by directly and physically representing the processes that determine the radiative impacts. Model outputs, including effective grain size, dust stratigraphy, timing of dust emergence, and albedo, were validated with a near daily snow and light-absorbing particle physical and optical property data set, and were well simulated. Daily mean radiative forcing ranged from 2 to 109 W/m(2) and was 30 W/m(2) on average over the full simulation, advancing snowmelt by 30 days. A partitioning of direct and indirect radiative impacts shows that direct absorption by dust contributes similar to 80% of total radiative forcing, with grain coarsening accounting for similar to 20%. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490973700056 |
WOS关键词 | LIGHT-ABSORBING IMPURITIES ; BLACK CARBON ; SIERRA-NEVADA ; ALBEDO ; COVER ; DEPOSITION ; STRATIGRAPHY ; SPECTROSCOPY ; MOUNTAINS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/185896 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Utah, Department Geog, Salt Lake City, UT 84112 USA; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Skiles, S. McKenzie,Painter, Thomas H.. Toward Understanding Direct Absorption and Grain Size Feedbacks by Dust Radiative Forcing in Snow With Coupled Snow Physical and Radiative Transfer Modeling[J]. WATER RESOURCES RESEARCH,2019,55(8):7362-7378. |
APA | Skiles, S. McKenzie,&Painter, Thomas H..(2019).Toward Understanding Direct Absorption and Grain Size Feedbacks by Dust Radiative Forcing in Snow With Coupled Snow Physical and Radiative Transfer Modeling.WATER RESOURCES RESEARCH,55(8),7362-7378. |
MLA | Skiles, S. McKenzie,et al."Toward Understanding Direct Absorption and Grain Size Feedbacks by Dust Radiative Forcing in Snow With Coupled Snow Physical and Radiative Transfer Modeling".WATER RESOURCES RESEARCH 55.8(2019):7362-7378. |
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