Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aad5c5 |
A critical assessment of the long-term changes in the wintertime surface Arctic Oscillation and Northern Hemisphere storminess in the ERA20C reanalysis | |
Bloomfield, H. C.1,2; Shaffrey, L. C.2; Hodges, K., I2; Vidale, P. L.1,2 | |
2018-09-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | This study investigates the robustness of the long-term changes in the wintertime surface Arctic Oscillation (AO) in the ERA20C reanalysis. A statistically significant trend in the AO is found in ERA20C over the period 1900-2010. These long-term changes in the AO are not found in two other observational datasets. The long-term change in the AO in ERA20C is associated with statistically significant negative trend (approximately-6 hPa per century) in mean-sea level pressure (MSLP) over the Northern Hemisphere polar regions. This is not seen in the HADSLP2 observational dataset, suggesting that the trends in the ERA20C AO index may be spurious. The spurious long-term changes in MSLP and the AO index in ERA20C result in a strengthening of the meridional MSLP gradient in ERA20C. The strengthening of the meridional MSLP gradient is consistent with increases in wintertime storminess in Northern Europe and the NH high latitudes. |
英文关键词 | ERA20C reanalysis trends Arctic Oscillation extratropical cyclones |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442660400002 |
WOS关键词 | PRESSURE DATA SET ; CLIMATE TRENDS ; VERSION 2 ; PART I ; ATLANTIC ; 20TH-CENTURY ; VARIABILITY ; CIRCULATION ; TRACKING ; INCREASE |
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/35379 |
专题 | 气候变化 |
作者单位 | 1.Univ Reading, Dept Meteorol, Reading RG6 6BB, Berks, England; 2.Univ Reading, Natl Ctr Atmospher Sci, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Bloomfield, H. C.,Shaffrey, L. C.,Hodges, K., I,et al. A critical assessment of the long-term changes in the wintertime surface Arctic Oscillation and Northern Hemisphere storminess in the ERA20C reanalysis[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(9). |
APA | Bloomfield, H. C.,Shaffrey, L. C.,Hodges, K., I,&Vidale, P. L..(2018).A critical assessment of the long-term changes in the wintertime surface Arctic Oscillation and Northern Hemisphere storminess in the ERA20C reanalysis.ENVIRONMENTAL RESEARCH LETTERS,13(9). |
MLA | Bloomfield, H. C.,et al."A critical assessment of the long-term changes in the wintertime surface Arctic Oscillation and Northern Hemisphere storminess in the ERA20C reanalysis".ENVIRONMENTAL RESEARCH LETTERS 13.9(2018). |
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