DOI: 10.1002/joc.5866
Scopus记录号: 2-s2.0-85054480416
论文题名: Tropopause trend across China from 1979 to 2016: A revisit with updated radiosonde measurements
作者: Chen X. ; Guo J. ; Yin J. ; Zhang Y. ; Miao Y. ; Yun Y. ; Liu L. ; Li J. ; Xu H. ; Hu K. ; Zhai P.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 2 起始页码: 1117
结束页码: 1127
语种: 英语
英文关键词: lapse rate tropopause
; radiosonde
; seasonal variation
; spatial distribution
; trend
Scopus关键词: Expansion
; Global warming
; Radiosondes
; Spatial distribution
; Tropics
; Bimodal distribution
; Frequency distributions
; High-latitude regions
; Lapse rate
; Large-scale circulation
; Radiosonde measurements
; Seasonal variation
; trend
; Clouds
; global warming
; measurement method
; radiosonde
; seasonal variation
; spatial distribution
; trend analysis
; tropopause
; China
英文摘要: The long-term trend in tropopause has profound implications for the expansion of tropical zone and the variation of large-scale circulation. However, the changes of tropopause in China have not been explicitly investigated as yet. In this study, the trend of lapse rate tropopause (LRT) height over China has been comprehensively revisited for the period of 1979–2016, using the newly released quality-controlled radiosonde data from China Meteorological Administration. Results show that the LRT height in most parts of China shows a significant upwards trend with a rate of 370 m/decade, most likely due to global warming. The fastest increase occurs in northwest region, followed by the low-latitude regions (15°–25°N), while the slowest increase occurs in the high-latitude regions (45°–55°N). Overall, the LRT height varies with latitudes, exhibiting a “south high and north low” pattern. In particular, high LRT height over low latitudes is found to be expanding rapidly polewards in recent years, in contrast to almost constant LRT height over mid and high latitudes. In terms of the seasonality, tropopause height reaches the peak in summer and bottom in winter. The frequency distribution in the vertical direction exhibits a bimodal pattern with the major peak mostly occurring at around 15 km and a secondary peak occurring between 8 and 12 km. This bimodal distribution is similar to the findings revealed in previous studies. Our findings offer important circumstantial observational evidence for the polewards expansion of the Tropics under global warming. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116566
Appears in Collections: 全球变化的国际研究计划
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作者单位: State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; Meteorological Observation Center, China Meteorological Administration, Beijing, China; National Meteorological Information Center, China Meteorological Administration, Beijing, China
Recommended Citation:
Chen X.,Guo J.,Yin J.,et al. Tropopause trend across China from 1979 to 2016: A revisit with updated radiosonde measurements[J]. International Journal of Climatology,2019-01-01,39(2)