沈阳市降水及日照变化特征分析

利用1951～2009年沈阳市的降水和日照时数资料，从年际、季节、月等不同时间尺度，对近59年来沈阳市的降水和日照时数变化特征作了较全面的分析研究，并分析了年降水量与年日照时数的关系。结果表明，沈阳市近59年来降水量年际变化大，总体呈减少趋势，其中，夏、秋季降水量减少趋势明显，冬春降水量略有增多。日照时数的变化总体呈下降趋势。

Study on the Changes of Precipitation and Sunshine in Shenyang

Based on the data of precipitation in Shenyang from 1951 to 2009,the variation characteristics of precipitation and sunshine hours in Shenyang in recent 59 years were analyzed and studied comprehensively from different time scales of annual,seasonal and monthly,etc. And the relationship between the precipitation and sunshine duration was analyzed. It was concluded that the changes of precipitation between years is big,the distribution of the precipitation among four seasons is uneven,and the overall change trend of the precipitation is in downward from 1951 to 2009. It was also found that the sunshine duration changes are in decreased trend in the overall.