Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028557 |
Impacts of Snow Darkening by Deposition of Light-Absorbing Aerosols on Hydroclimate of Eurasia During Boreal Spring and Summer | |
Lau, William K. M.1; Sang, Jeong2; Kim, M. K.2; Kim, K. M.3; Koster, R. D.4; Yasunari, T. J.5,6 | |
2018-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:16页码:8441-8461 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Korea; Japan |
英文摘要 | In this study, we used the NASA GEOS-5 climate model to investigate the impact of snow darkening by deposition of light-absorbing aerosols on the hydroclimate of Eurasia during boreal spring and summer. Two sets of 10-member ensemble model integrations with prescribed sea surface temperature were carried out for 10 simulated years (2002-2011); one includes snow-darkening effects (SDE) by light-absorbing aerosols and one does not (NSDE). Differences between the two experiments in the hydroclimates over Eurasia were evaluated. Results show that SDE warming is most pronounced during the melting season due to strong snow-albedo feedback in the vicinity of the retreating seasonal snowline. SDE spurs a wet-first-dry-later modulation of the surface energy and water balances, characterized by an accelerated (days-to-weeks) snowmelt, accompanied by excessive runoff and a warming and wetting of the land (relative to NSDE) during the early melting season. The snowmelt is followed by a fast desiccation of the land during the late melting, and early warming season, and then a prolonged warmer and drier land, through the boreal summer. The prolonged warming is sustained by atmospheric conditions favorable for the development of atmospheric blocking, that is, higher middle-to-upper-tropospheric geopotential height, lower relative humidity, reduced cloudiness, and enhanced atmospheric subsidence. Overall, SDE by light-absorbing aerosols leads to a warmer and drier boreal summer hydroclimate, increasing the frequency of the top 5 and 1% extreme hot days (as defined by NSDE statistics) over western and northern Eurasia by approximately threefold and tenfold, respectively. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445331900005 |
WOS关键词 | CATCHMENT-BASED APPROACH ; BLACK CARBON DEPOSITION ; LAND-SURFACE PROCESSES ; CLIMATE-CHANGE ; HEAT WAVES ; TIBETAN PLATEAU ; HIMALAYAN GLACIERS ; EUROPEAN SUMMER ; SOIL-MOISTURE ; GOCART MODEL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/33027 |
专题 | 气候变化 |
作者单位 | 1.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA; 2.Kongju Natl Univ, Dept Atmospher Sci, Gongju, South Korea; 3.NASA, Goddard Space Flight Ctr, Lab Atmospheres, Greenbelt, MD USA; 4.NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD USA; 5.Hokkaido Univ, Fac Engn, Sapporo, Hokkaido, Japan; 6.Hokkaido Univ, Arctic Res Ctr, Sapporo, Hokkaido, Japan |
推荐引用方式 GB/T 7714 | Lau, William K. M.,Sang, Jeong,Kim, M. K.,et al. Impacts of Snow Darkening by Deposition of Light-Absorbing Aerosols on Hydroclimate of Eurasia During Boreal Spring and Summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(16):8441-8461. |
APA | Lau, William K. M.,Sang, Jeong,Kim, M. K.,Kim, K. M.,Koster, R. D.,&Yasunari, T. J..(2018).Impacts of Snow Darkening by Deposition of Light-Absorbing Aerosols on Hydroclimate of Eurasia During Boreal Spring and Summer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(16),8441-8461. |
MLA | Lau, William K. M.,et al."Impacts of Snow Darkening by Deposition of Light-Absorbing Aerosols on Hydroclimate of Eurasia During Boreal Spring and Summer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.16(2018):8441-8461. |
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