新疆近50,a气候的变化特征

利用新疆地区具有较好代表性的23个气象台站1960-2009年的历史气候资料，运用线性倾向估计对新疆地区近50 a来气候变化的主要特征进行了分析.结果表明：近50 a来，新疆地区能量供给因子中的最高、最低和平均温度都呈明显的上升趋势，而日照时数、温度年较差呈明显的下降趋势，云量的变化趋势不明显并略有下降；空气动力因子风速的下降趋势显著；湿度因子中空气相对湿度和降水量略有上升趋势，而水汽压有明显上升趋势.受此影响，近50 a新疆地区气候总体趋于干向湿发展的趋势，气候朝暖湿方向变化.

Climatic change characteristics of Xinjiang during recent 50 years

Based on the data obtained from 23 meteorological stations in Xinjiang during 1960-2009,the climatic change characteristics during recent 50 years in Xinjiang are analyzed by using the method of linear trend estimate.The research shows that,in recent 50 years,the maximum,minimum and average temperatures in Xinjiang are increasing,but the sunshine hours and the mean annual range of temperature are decreasing,while the change tendency of the cloud cover is non-significant.As the main air dynamic factor,wind speed decreased significantly.The three humidity factors were in different increasing trend,or specifically speaking,the relative humidity and the precipitation increased slightly,while the vapor pressure increased obviously.As a result,Xinjiang area is getting wetter in the past 50 years,and the climate is in a warm-wet trend.