Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aaf42b |
Indicators and trends of polar cold airmass | |
Kanno, Yuki1,2,3; Walsh, John E.4; Abdillah, Muhammad R.6; Yamaguchi, Junpei5; Iwasaki, Toshiki5 | |
2019-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Norway; USA; Indonesia |
英文摘要 | Trends and variations in the amount of cold airmass in the Arctic and the Northern Hemisphere are evaluated for the 60 year period, 1959-2018. The two indicators are (1) polar cold air mass (PCAM), which is the amount of air below a potential temperature threshold, and (2) negative heat content (NHC), which includes a weighting by coldness. Because the metrics of coldness are based on multiple layers in the atmosphere, they provide a more comprehensive framework for assessment of warming than is provided by surface air temperatures alone. The negative trends of PCAM and NHC are stronger (as a % per decade) when the threshold is 245 Krather than 280 K, indicating that the loss of extremely cold air is happening at a faster rate than the loss of moderately cold air. The loss of cold air has accelerated, as the most rapid loss of NHC has occurred in recent decades (1989-2018). The spatial patterns of the trends of PCAM and NHC provide another manifestation of Arctic amplification. Of the various teleconnection indices, the Atlantic Multidecadal Oscillation shows the strongest correlations with the spatially integrated metrics of moderate coldness. Several Pacific indices also correlate significantly with these indicators. However, the amount of extremely cold air mass does not correlate significantly with the indices of internal variability used here. |
英文关键词 | climate Arctic indicators cold airmass |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458537700001 |
WOS关键词 | AIR MASS ; NORTHERN ; AMPLIFICATION ; CLIMATE ; IMPACTS ; WINTERS |
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/36486 |
专题 | 气候变化 |
作者单位 | 1.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 2.Univ Bergen, Geophys Inst, Bergen, Norway; 3.Bjerknes Ctr Climate Res, Bergen, Norway; 4.Univ Alaska Fairbanks, Alaska Ctr Climate Assessment & Policy, Fairbanks, AK USA; 5.Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi, Japan; 6.Inst Teknol Bandung, Fac Earth Sci & Technol, Atmospher Sci Res Grp, Bandung, Indonesia |
推荐引用方式 GB/T 7714 | Kanno, Yuki,Walsh, John E.,Abdillah, Muhammad R.,et al. Indicators and trends of polar cold airmass[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(2). |
APA | Kanno, Yuki,Walsh, John E.,Abdillah, Muhammad R.,Yamaguchi, Junpei,&Iwasaki, Toshiki.(2019).Indicators and trends of polar cold airmass.ENVIRONMENTAL RESEARCH LETTERS,14(2). |
MLA | Kanno, Yuki,et al."Indicators and trends of polar cold airmass".ENVIRONMENTAL RESEARCH LETTERS 14.2(2019). |
条目包含的文件 | 条目无相关文件。 |
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