1960-2013年云南地面温度时空变化特征

发布时间：2018-12-13 18:32

【摘要】：利用云南省1960—2013年逐日0cm地面温度观测资料,运用Mann-Kendall趋势和突变检验法、小波分析法等分析了云南地面温度的空间分布、变化趋势及突变特征、周期变化及可能的影响因素。结果表明:年平均地温、年平均最低地温整体上呈现"南高北低"的分布特点,年平均最高地温呈现出"西北、东北低,中部、南部高;深切河谷高,高原面较低,高耸山地更低"的分布特点;同时,也表现出明显的区域性差异;年平均地温、年平均最高(低)地温高值中心主要分布在元江河谷(元江站),金沙江河谷(元谋站),滇南澜沧江及其支流河谷(景洪站、勐腊站);平均地温、平均最高(低)地温季节分布特点与年际分布大致相似。平均地温、平均最高(低)地温年际、季节及不同气候带均呈增温趋势;年平均地温、年平均最高(低)地温均以冬季增温幅度最大;年平均地温、年平均最低地温以高原气候带增温幅度最大,年平均最高地温以北热带增温幅度最大。年平均地温、年平均最高(低)地温及不同气候带地温均发生显著突变;其中,年平均地温、年平均最高(低)地温显著突变点分别为2000年、2004年、1997年;年平均地温、年平均最高(低)和不同气候带地温均以长周期变化为主周期;其中,年平均地温、年平均最高(低)地温主周期分别为28a,26a,26a。年平均地温、年平均最高(低)地温与纬度和海拔呈极其显著的负相关;1960—2013年亚洲区极涡面积(强度),西太平洋副高西伸脊点指数显著减弱,西太平洋副高面积(强度、脊线)、印缅槽、西藏高原、印度副高面积指数呈显著增加可能是引起云南地温变化的原因之一。
[Abstract]:Based on the daily 0cm ground temperature observation data from 1960 to 2013 in Yunnan Province, the spatial distribution, variation trend and abrupt change characteristics of ground temperature in Yunnan Province are analyzed by using Mann-Kendall trend and mutation test method, wavelet analysis method and so on. Periodic changes and possible influencing factors. The results show that the annual mean ground temperature and the annual mean lowest ground temperature are "south high and north low" as a whole, and the annual average highest ground temperature is "northwest, northeast low, central and southern high;" The deep valley is high, the plateau surface is lower, the towering mountain is lower ", at the same time, there are obvious regional differences. The annual mean ground temperature is the highest (low) and the high value center is mainly distributed in the Yuanjiang River Valley (Yuanjiang Station), the Jinsha River Valley (Yuanmou Station), the Lancang River and its tributaries in Southern Yunnan (Jinghong Station, Mengla Station). The seasonal distribution characteristics of mean ground temperature and average highest (low) ground temperature are approximately similar to that of interannual distribution. The mean ground temperature is the highest (low) interannual, the seasonal and different climatic zones show a trend of warming, and the annual mean ground temperature, the annual average maximum (low) ground temperature is the largest in winter. The annual mean ground temperature is the highest in the climate zone of the plateau and the largest in the north of the tropical zone. The annual mean ground temperature, the annual mean highest (low) ground temperature and the different climatic zone ground temperature all have significant mutation, among them, the annual mean ground temperature, the annual average maximum (low) ground temperature significant mutation point are 2000, 2004, 1997 respectively; The annual mean ground temperature, annual mean maximum (low) and different climatic zones are dominated by long period variation, in which the annual mean ground temperature and the annual average maximum (low) earth temperature are 28a ~ 26a ~ 26a ~ (26) a, respectively. The annual mean ground temperature, annual mean maximum (low) soil temperature was significantly negatively correlated with latitude and altitude. From 1960 to 2013, the Asian polar vortex area (intensity), the west Pacific subtropical high ridge extension point index significantly weakened, the western Pacific subtropical high area (intensity, ridge line), the Indo-Burma trough, the Tibet plateau, A significant increase in the Indian subtropical high area index may be one of the reasons for the change of ground temperature in Yunnan.
【作者单位】：云南师范大学旅游与地理科学学院;
【基金】：国家自然科学基金“滇东岩溶高原峰林湖盆水资源枯竭机制研究”(41261007)
【分类号】：S152.8

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