利用NCEP/NCAR再分析月平均资料及葫芦岛地区4个气象站1981～2010年的夏季（6～8月）降水资料，研究了葫芦岛地区夏季降水的年际变化特征及其与大气环流的联系。结果表明：近30年来，葫芦岛沿海地区的夏季降水呈线性下降趋势，变化趋势不显著，西部地区呈线性上升的趋势，且变化趋势显著；葫芦岛地区夏季降水量的空间分布为全区一致型。在葫芦岛地区偏涝年份的200 hPa位势高度距平场上，东北地区反气旋性环流异常偏强，西风风速偏大；在偏涝年份的500 hPa位势高度距平场上，中高纬地区存在经向环流，副热带高压势力偏强、位置偏北；在偏涝年份的850 hPa风距平场上，中国东部存在偏南风异常偏强，带来较多的水汽。%The NCEP/NCAR reanalysis monthly mean data and the summer ( from June to August ) precipitation data of 4 me-teorological stations in Huludao area during 1981~2010 were used to study the interannual variations in summer precipitation and atmospheric circulation.The results showed that:in the past 30 years, the summer rainfall in Huludao coastal region was linearly downward , but the trend was not significant;the summer rainfall in the western region was linearly upward , and the trend was sig-nificant .The spatial distribution of summer precipitation in Huludao area was of all -consistency .On 200 hPa geopotential height a-nomaly field of more precipitation year , Northeastern China had anticyclonic circulation anomalies , which caused larger west wind speed.On 500 hPa geopotential height anomaly field of more precipitation year , the meridional circulation existed in middle -high-latitude area;the influence of subtropical high was relatively strong , and its location was slightly northward .On 850 hPa wind a-nomaly field of more precipitation year , the southward wind in Eastern China was abnormally and relatively strong , which brought more vapor .
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