摘要
采用拉萨１９５２～１９９５年逐月月平均温度资料，分析了拉萨４４年温度的变化特征。分析表明：４４年拉萨经历了暖—冷—暖—冷—暖５个时期，其中６０年代是一长时期的冷期，四季均较明显；８０年代以来是一长时期的暖期。拉萨温度在春、夏季具有较好的持续性，８～９月和１２～１月持续性易发生转折；３年、１１年、２２年的周期显著。拉萨温度异常具有较好的持续性、阶段性和突变性，主要受中纬度环流和太阳黑子的影响所致。
The 44 years variational characteristics of Lhasa temperature are analysed by using the monthly mean temperature data from 1952 to 1995. It shows that in the recent 44 years,there are warm—cold—warm—cold—warm evolution processes for Lhasa temperature. A long cold period is in the 1960′s and a warm period is from 1980′s ～1990′s. Temperature of Lhasa has a good persistence in spring and summer. It′s persistence is easy change in August～September and December～January. The 3-year,11-year and 22-year periods are significant. Lhasa temperature is mainly affected by middle latitude circulation and sunspot.
出处
《高原气象》
CSCD
北大核心
1997年第3期312-318,共7页
Plateau Meteorology
