| 我国南方地区1960-2009年冬季气温分析 |
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| 引用本文： | 曾波,闫彩霞,余莲.我国南方地区1960-2009年冬季气温分析[J].高原山地气象研究,2016,36(2):46-52. |
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| 作者姓名： | 曾波 闫彩霞 余莲 |
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| 作者单位： | 1. 中国气象局成都高原气象研究所/高原与盆地暴雨旱涝灾害四川省重点实验室, 成都 610072; |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2012CB417202)、国家自然科学基金项目(91337215)、成都高原气象开放实验室基金课题(BROP201612)、四川省气象局科学技术研究开放课题(川气课题2014-青年-03) |
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| 摘 要： | 利用1960~2009年我国南方地区277个测站逐日气温资料,通过旋转经验正交函数(REOF)将南方冬季(12月、1月、2月)地区划分成4个区域,采用气候趋势系数、气候倾向率和Mann-kendall(MK)法对日平均气温,日最高气温和日最低气温的时空分布特征进行研究。结果发现:三类气温整体皆自东南往西北方向递减;昼夜温差为减小趋势,减小显著区域为青藏高原、川西高原、川东、江淮地区及沿海局部区域;南方地区冬季整体呈升温趋势,上升趋势最大的为日最低气温0.411℃/10a,其次是日平均气温0.316℃/10a,最小的是日最高气温0.228℃/10a,而上升幅度最大为地形复杂海拔较高的青藏高原、云南和川西地区,其次是沿海地区、长江和黄河中下游地区,升温幅度最小的为川东、贵州、重庆、广西等地,而青海省河南站近50年为降温;日最低气温突变比日平均气温突变发生早,在1990年左右,而突变发生最晚的是日最高气温,在1997~1999年。
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| 关 键 词： | 南方地区 冬季气温 REOF 气候趋势系数 MK检验 |
| 收稿时间： | 2016-04-28 |
Analysis of Winter Temperature in South China during 1960-2009 |
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| Affiliation: | 1. Chengdu Institute of Plateau Meteorological, China Meteorology Administration/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China;2. Xiangyang Meteorological Buerau, Xiangyang 441000, China |
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| Abstract: | Based on the daily temperature data at 277 observational stations in Southern China from 1960 to 2009,the Southern China can be divided into four subareas of temperature in winter by using method of rotated empirical orthogonal function(REOF). The spatial and temporal distribution of daily mean temperature,maximum and minimum temperature were analyzed by methods of climate trend coefficient,climate tendency rate and Mann-Kendall(MK) test. The results show that the three types of temperature are in a decreasing trend from southeast to northwest; the tendency of day-and-night temperature tends to decrease,salient region is located in the area of Western Sichuan Plateau,Tibet Plateau,eastern Sichuan province,Jianghuai and the coastal local area. The temperatures in Sothern China are in an increasing trend in winter,the daily minimum temperature has the largest trend of 0.411℃/10a,followed by the daily mean temperature of 0.316℃ /10a,and the daily maximum temperature has the smallest trend of 0.228℃/10a. Largest increasing trend of temperature appeared in Qinghai-Tibet Plateau,Yunnan and Western Sichuan which is in areas of complex terrain and high elevation,followed by costal area,Yangtze River and the middle and lower reaches of the Yellow River,minimum increasing amplitude located in East Sichuan,Guizhou,Chongqing,Guangxi,and Henan station in Qinghai Province is in an decreasing trend nearly the 50 years. Mutation of the daily minimum temperature occurred in 1990 which is earlier than that of the daily mean temperature,mutation of the daily maximum temperature occurred in the period of 1997~1999 which is the latest. |
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