阿勒泰地区暖季蒸发变化特征及与气象因子的关系  

Relationship Between Evaporation Variation and Meteorological Factors in Warm Season in Aletai Area

作　　者：庄晓翠[1] 张林梅[1] 阿志肯[1] 刘大锋[1] 

机构地区：[1]新疆阿勒泰地区气象局,新疆阿勒泰836500

出　　处：《干旱气象》2009年第3期213-219,共7页Journal of Arid Meteorology

摘　　要：用新疆阿勒泰地区7个气象站1964—2001年暖季（5～9月）20cm口径蒸发皿蒸发量资料，运用线性趋势法、相关法分析发现，就整个地区平均而言，暖季蒸发皿蒸发量呈较明显的下降趋势；在区域内富蕴站呈显著上升趋势，吉木乃和布尔津站变化不显著，与全区不同步。完全相关系数法分析表明，整个地区平均而言，低云量、平均风速、气温日较差与蒸发皿蒸发量有显著的相关性，是影响蒸发量的主要因子，但各站有所不同。低云量及气溶胶等污染物的增加导致太阳辐射量减少，而引起气温日较差减少，最终导致蒸发量减少；平均风速减小则主要与全球变暖背景下亚洲冬季风和夏季风减弱导致我国平均风速减小有关。Based on 20 cm pan evaporation data of 7 weather stations in warm seaon from 1964 to 2001 （ May - September） in Xinjiang Aletai area, the feature of evaporation change was analyzed using the linear trend and correlation analysis methods. On average in this area, the pan evaporation in warm season presented remarkable decreasing trend, while it was increasing in Fuyun, and was no obvious change in Jimunai and Buerjing. Analysis on the complete correlation coefficients of climate factors with pan evaporation on regional average show that low cloud amount, average wind speed and diurnal temperature range were the main influencing factors resulted in pan evaporation decrease, but for different station they were different. The decrease in solar radiation might relate to the increase of low cloud amount and aerosol as well as the other pollutants, which made pan evaporation decrease. The lowering of wind speed might be associated with the weakening of the Asian winter and summer monsoon under the background of global warming.

关 键 词：蒸发皿蒸发 低云量 平均风速 日较差 气象因子 变化特征 

分 类 号：P426.22[天文地球—大气科学及气象学]