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| DOI | 10.1175/JCLI-D-20-0789.1 |
| Seesawing of winter temperature extremes between East Asia and North America | |
| Sung M.-K.; Son S.-W.; Yoo C.; Hwang J.; An S.-I. | |
| 发表日期 | 2021 |
| ISSN | 08948755 |
| 起始页码 | 4423 |
| 结束页码 | 4434 |
| 卷号 | 34期号:11 |
| 英文摘要 | In recent winters, there have been repeated observations of extreme warm and cold spells in the midlatitude countries. This has evoked questions regarding how winter temperature extremes are induced. In this study, we demonstrate that abnormally warm winter weather in East Asia can drive the onset of extremely cold weather in North America approximately one week forward. These seesawing extremes across the basin are mediated by the North Pacific Oscillation (NPO), one of the recurrent atmospheric patterns over the North Pacific. Budget analysis of the quasigeostrophic geopotential tendency equation shows that intense thermal advection over East Asia is able to trigger the growth of the NPO. Vorticity fluxes associated with the upper-level stationary trough then strengthen and maintain the NPO against thermal damping following the onset of the NPO. Differential diabatic heating accompanied by changes in circulation also positively contribute to the growth and maintenance of the NPO. These results imply that recurrent cold extremes, seemingly contrary to global warming, may be an inherent feature resulting from strengthening warm extremes. © 2021 American Meteorological Society. |
| 英文关键词 | Cold air surges; Extreme events; North Pacific Oscillation |
| 语种 | 英语 |
| scopus关键词 | Global warming; Atmospheric pattern; Diabatic heating; Geopotentials; Quasi-geostrophic; Temperature extremes; Thermal advection; Thermal damping; Vorticity flux; Budget control |
| 来源期刊 | Journal of Climate
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/178545 |
| 作者单位 | Yonsei University, Seoul, South Korea; Seoul National University, Seoul, South Korea; Ewha Womans University, Seoul, South Korea |
| 推荐引用方式 GB/T 7714 | Sung M.-K.,Son S.-W.,Yoo C.,et al. Seesawing of winter temperature extremes between East Asia and North America[J],2021,34(11). |
| APA | Sung M.-K.,Son S.-W.,Yoo C.,Hwang J.,&An S.-I..(2021).Seesawing of winter temperature extremes between East Asia and North America.Journal of Climate,34(11). |
| MLA | Sung M.-K.,et al."Seesawing of winter temperature extremes between East Asia and North America".Journal of Climate 34.11(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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