A key factor initiating surface ablation of Arctic sea ice: earlier and increasing liquid precipitation
文献类型：期刊论文
| 作者 | Dou, Tingfeng1,2; Xiao, Cunde2,3,4; Liu, Jiping5; Han, Wei6; Du, Zhiheng2; Mahoney, Andrew R.7; Jones, Joshua8; Eicken, Hajo8 |
| 刊名 | CRYOSPHERE
 |
| 出版日期 | 2019-04-15 |
| 卷号 | 13期号:4页码:1233-1246 |
| ISSN号 | 1994-0416 |
| DOI | 10.5194/tc-13-1233-2019 |
| 通讯作者 | Xiao, Cunde(cdxiao@bnu.edu.cn) |
| 英文摘要 | Snow plays an important role in the Arctic climate system, modulating heat transfer in terrestrial and marine environments and controlling feedbacks. Changes in snow depth over Arctic sea ice, particularly in spring, have a strong impact on the surface energy budget, influencing ocean heat loss, ice growth and surface ponding. Snow conditions are sensitive to the phase (solid or liquid) of deposited precipitation. However, variability and potential trends of rain-on-snow events over Arctic sea ice and their role in sea-ice losses are poorly understood. Time series of surface observations at Utqiagvik, Alaska, reveal rapid reduction in snow depth linked to late-spring rain-on-snow events. Liquid precipitation is key in preconditioning and triggering snow ablation through reduction in surface albedo as well as latent heat release determined by rainfall amount, supported by field observations beginning in 2000 and model results Rainfall was found to accelerate warming and ripening of the snowpack, with even small amounts (such as 0.3 mm recorded on 24 May 2017) triggering the transition from the warming phase into the ripening phase. Subsequently, direct heat input drives snowmelt, with water content of the snow-pack increasing until meltwater output occurs, with an associated rapid decrease in snow depth. Rainfall during the ripening phase can further raise water content in the snow layer, prompting onset of the meltwater output phase in the snowpack. First spring rainfall in Utqiagvik has been observed to shift to earlier dates since the 1970s, in particular after the mid-1990s. Early melt season rainfall and its fraction of total annual precipitation also exhibit an increasing trend. These changes of precipitation over sea ice may have profound impacts on ice melt through feedbacks involving earlier onset of surface melt. |
| 收录类别 | SCI |
| WOS关键词 | MELT SEASON ; SNOW DEPTH ; SUMMER ; ALASKA ; PACK |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| WOS记录号 | WOS:000464566700001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555488 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Xiao, Cunde |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 3.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 4.Chinese Acad Meteorol Sci, Inst Polar Meteorol, Beijing 100081, Peoples R China 5.SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA 6.Beijing Meteorol Observat Ctr, Beijing 102600, Peoples R China 7.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA 8.Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA |
| 推荐引用方式 GB/T 7714 | Dou, Tingfeng,Xiao, Cunde,Liu, Jiping,et al. A key factor initiating surface ablation of Arctic sea ice: earlier and increasing liquid precipitation[J]. CRYOSPHERE,2019,13(4):1233-1246. |
| APA | Dou, Tingfeng.,Xiao, Cunde.,Liu, Jiping.,Han, Wei.,Du, Zhiheng.,...&Eicken, Hajo.(2019).A key factor initiating surface ablation of Arctic sea ice: earlier and increasing liquid precipitation.CRYOSPHERE,13(4),1233-1246. |
| MLA | Dou, Tingfeng,et al."A key factor initiating surface ablation of Arctic sea ice: earlier and increasing liquid precipitation".CRYOSPHERE 13.4(2019):1233-1246. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。