Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-4118-2 |
The Karakoram/Western Tibetan vortex: seasonal and year-to-year variability | |
Li, Xiao-Feng; Fowler, Hayley J.; Forsythe, Nathan; Blenkinsop, Stephen; Pritchard, David | |
2018-11-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:3883-3906 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The "Karakoram Vortex" (KV), hereafter also referred to as the "Western Tibetan Vortex" (WTV), has recently been recognized as a large-scale atmospheric circulation system related to warmer (cooler) near-surface and mid-lower troposphere temperatures above the Karakoram in the western Tibetan Plateau (TP). It is characterized by a deep, anti-cyclonic (cyclonic) wind anomaly associated with higher (lower) geopotential height in the troposphere, during winter and summer seasons. In this study, we further investigate the seasonality and basic features of the WTV in all four seasons, and explore its year-to-year variability and influence on regional climate. We find the WTV accounts for the majority of year-to-year circulation variability over the WTP as it can explain over 50% (R-2 >= 0.5) variance of the WTP circulation on multiple levels throughout the troposphere, which declines towards the eastern side of the TP in most seasons. The WTV is not only more (less) active but also has a bigger (smaller) domain area, with a deeper (shallower) structure, in winter and spring (summer and autumn). We find that the WTV is sensitive to both the location and intensity of the Subtropical Westerly Jet (SWJ), but the relationship is highly dependent on the climatological mean location of SWJ axes relative to the TP in different seasons. We also show that the WTV significantly modulates surface and stratospheric air temperatures, north-south precipitation patterns and total column ozone surrounding the western TP. As such, the WTV has important implications for the understanding of atmospheric, hydrological and glaciological variability over the TP. |
英文关键词 | Karakoram vortex Western Tibetan vortex Subtropical westerly jet Precipitation Ozone Temperature Tibetan plateau |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447366100041 |
WOS关键词 | ULTRAVIOLET-RADIATION ; WINTER PRECIPITATION ; SUMMER MONSOON ; ASIAN MONSOON ; OZONE HOLE ; PLATEAU ; CLIMATE ; CIRCULATION ; GLACIERS ; HIMALAYA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/36234 |
专题 | 气候变化 |
作者单位 | Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England |
推荐引用方式 GB/T 7714 | Li, Xiao-Feng,Fowler, Hayley J.,Forsythe, Nathan,et al. The Karakoram/Western Tibetan vortex: seasonal and year-to-year variability[J]. CLIMATE DYNAMICS,2018,51:3883-3906. |
APA | Li, Xiao-Feng,Fowler, Hayley J.,Forsythe, Nathan,Blenkinsop, Stephen,&Pritchard, David.(2018).The Karakoram/Western Tibetan vortex: seasonal and year-to-year variability.CLIMATE DYNAMICS,51,3883-3906. |
MLA | Li, Xiao-Feng,et al."The Karakoram/Western Tibetan vortex: seasonal and year-to-year variability".CLIMATE DYNAMICS 51(2018):3883-3906. |
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