青藏高原近600年的温度变化

Temperature Variations over Qinghai Xizang Plateau in the Past 600 Years

利用 1983年 7月～ 1990年 12月ISCCP卫星反演的地表温度资料 ,将高原的温度变化分为三个区。在每一区找 1～ 2个温度变化的代用资料 (冰芯、树轮 ) ,将近 6 0 0a的资料进行标准化处理 ,然后按面积加权 ,得到了大体可代表整个高原的平均温度变化序列 ,发现 6 0 0a来高原上曾出现过三次冷期和暖期 ,最冷在

Three subregions are compartmentalized for temperature over Qinghai Xizang Plateau based on the ISCCP surface temperature data during July 1983～December 1990. Ice core and/or tree ring data in the past 600 years are chosen in each subregion and then the data are computed into the air temperature index with the method of standardization and area proportioned. Variations of air temperature index show that three times of cold and warm periods appeared in the past 600 years. It is the coldest in the middle of 17th century.