Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1915258116 |
Unraveling driving forces explaining significant reduction in satellite-inferred Arctic surface albedo since the 1980s | |
Rudong Zhang; Hailong Wang; Qiang Fu; Philip J. Rasch; and Xuanji Wang | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
出版年 | 2019 |
英文摘要 | AbstractThe Arctic has warmed significantly since the early 1980s and much of this warming can be attributed to the surface albedo feedback. In this study, satellite observations reveal a 1.25 to 1.51% per decade absolute reduction in the Arctic mean surface albedo in spring and summer during 1982 to 2014. Results from a global model and reanalysis data are used to unravel the causes of this albedo reduction. We find that reductions of terrestrial snow cover, snow cover fraction over sea ice, and sea ice extent appear to contribute equally to the Arctic albedo decline. We show that the decrease in snow cover fraction is primarily driven by the increase in surface air temperature, followed by declining snowfall. Although the total precipitation has increased as the Arctic warms, Arctic snowfall is reduced substantially in all analyzed data sets. Light-absorbing soot in snow has been decreasing in past decades over the Arctic, indicating that soot heating has not been the driver of changes in the Arctic snow cover, ice cover, and surface albedo since the 1980s. |
英文关键词 | Arctic amplification albedo reduction snow cover sea ice soot |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
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/205228 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | Rudong Zhang,Hailong Wang,Qiang Fu,et al. Unraveling driving forces explaining significant reduction in satellite-inferred Arctic surface albedo since the 1980s[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019. |
APA | Rudong Zhang,Hailong Wang,Qiang Fu,Philip J. Rasch,&and Xuanji Wang.(2019).Unraveling driving forces explaining significant reduction in satellite-inferred Arctic surface albedo since the 1980s.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. |
MLA | Rudong Zhang,et al."Unraveling driving forces explaining significant reduction in satellite-inferred Arctic surface albedo since the 1980s".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2019). |
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