Increasing free-air 0℃ isotherm height in Southwest China from 1960 to 2010  

作　　者：ZHANG Mingjun DONG Lei WANG Shengjie ZHAO Aifang QIANG Fang SUN Meiping WANG Qiong 

机构地区：[1]College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China

出　　处：《Journal of Geographical Sciences》2014年第5期833-844,共12页地理学报（英文版）

基　　金：National Basic Research Program of China(973 Program),No.2013CBA01801;National Natural Science Foundation of China,No.41161012

摘　　要：Based on the radiosonde data observed at 14 stations in Southwest China from 1960 to 2010, as well as the corresponding surface air temperature, the long-term change of free-air 0℃ isotherm height in Southwest China and the relationships between surface air temperature and 0℃ isotherm height are discussed. The results indicated that the spatial distribution of 0℃ isotherm height is generally related with latitude, but the huge massif or plateau may complicate the latitude pattern. The two main regimes influencing the spatial patterns of 0℃ isotherm height in Southwest China are latitude and huge massif. The annual 0℃ isotherm height has increased by 35 m per decade in the recent decades, which is statistically significant at the 0.001 level. Generally, the increasing trend can be examined for each seasonal series, especially in winter （53 m per decade）. The diversity of trend magnitudes for annual and seasonal series can also be detected at a spatial view, but generally 0℃ isotherm height correlated well with surface air temperature.Based on the radiosonde data observed at 14 stations in Southwest China from 1960 to 2010, as well as the corresponding surface air temperature, the long-term change of free-air 0℃ isotherm height in Southwest China and the relationships between surface air temperature and 0℃ isotherm height are discussed. The results indicated that the spatial distribution of 0℃ isotherm height is generally related with latitude, but the huge massif or plateau may complicate the latitude pattern. The two main regimes influencing the spatial patterns of 0℃ isotherm height in Southwest China are latitude and huge massif. The annual 0℃ isotherm height has increased by 35 m per decade in the recent decades, which is statistically significant at the 0.001 level. Generally, the increasing trend can be examined for each seasonal series, especially in winter （53 m per decade）. The diversity of trend magnitudes for annual and seasonal series can also be detected at a spatial view, but generally 0℃ isotherm height correlated well with surface air temperature.

关 键 词：Southwest China 0℃ isotherm height global warming radiosonde data 

分 类 号：P467[天文地球—大气科学及气象学] X703[环境科学与工程—环境工程]