DOI: 10.1016/j.gloplacha.2014.11.008
论文题名: Trends and variability of daily temperature extremes during 1960-2012 in the Yangtze River Basin, China
作者: Guan Y. ; Zhang X. ; Zheng F. ; Wang B.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 124 起始页码: 79
结束页码: 94
语种: 英语
英文关键词: Climate indices
; Climate variability
; Temperature extremes
; Trends
; Yangtze River Basin
Scopus关键词: Climate change
; Rivers
; Time series analysis
; Watersheds
; Climate index
; Climate variability
; Temperature extremes
; Trends
; Yangtze River basin
; Atmospheric temperature
; air temperature
; climate forcing
; cooling
; extreme event
; global warming
; regional climate
; river basin
; temperature profile
; trend analysis
; China
; Qinghai-Xizang Plateau
; Yangtze Basin
英文摘要: The variability of surface air temperature extremes has been the focus of attention during the past several decades, and may exert a great influence on the global hydrologic cycle and energy balance through thermal forcing. Based on daily minimum (TN) and maximum temperature (TX) observed by the China Meteorological Administration at 143 meteorological stations in the Yangtze River Basin (YRB), a suite of temperature indices recommended by the Expert Team on Climate Change Detection and Indices, with a primary focus on extreme events, were computed and analyzed for the period of 1960-2012 for this area. The results show widespread significant changes in all temperature indices associated with warming in the YRB during 1960-2012. On the whole, cold-related indices, i.e., cold nights, cold days, frost days, icing days and cold spell duration index significantly decreased by - 3.45, - 1.03, - 3.04, - 0.42 and - 1.6. days/decade, respectively. In contrast, warm-related indices such as warm nights, warm days, summer days, tropical nights and warm spell duration index significantly increased by 2.95, 1.71, 2.16, 1.05 and 0.73. days/decade. Minimum TN, maximum TN, minimum TX and maximum TX increased significantly by 0.42, 0.18, 0.19 and 0.14. °C/decade. Because of a faster increase in minimum temperature than maximum temperature, the diurnal temperature range (DTR) exhibited a significant decreasing trend of - 0.09. °C/decade for the whole YRB during 1960-2012. However, the decreasing trends all occurred in 1960-1985, while increasing trends though insignificant were found in all sub-regions and the whole YRB during 1986-2012. Geographically, stations in the eastern Tibet Plateau and northeastern YRB showed stronger trends in almost all temperature indices. Time series analysis indicated that the YRB was dominated by a general cooling trend before the mid-1980s, but a warming trend afterwards. In general, the overall warming in the YRB was mainly due to the warming in 1986-2012. Strong relationships between temperature trends and elevation were detected in this study. The warming rates increased with elevation when elevation is above 350. m, but decreased with elevation when elevation is below 350 m. © 2014. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84918824065&doi=10.1016%2fj.gloplacha.2014.11.008&partnerID=40&md5=93f4b46af6246a4a5a0da0fcd31cfa2e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11581
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: College of Resources and Environment, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A and F University, No.3 Taicheng Rd., Yangling, Shaanxi, China
Recommended Citation:
Guan Y.,Zhang X.,Zheng F.,et al. Trends and variability of daily temperature extremes during 1960-2012 in the Yangtze River Basin, China[J]. Global and Planetary Change,2015-01-01,124.