1951—2009年大连市气候变化特征分析

利用大连市1951—2009年常规气象资料,分析了大连市气温、降水量、日照时数、平均风速、蒸发量的变化特征。结果显示,大连市1951—2009年年平均气温呈显著上升趋势,春季和冬季上升趋势明显,夏季和秋季升温较弱。年极端最低气温上升趋势比年极端最高气温上升趋势更为显著。年降水量变化趋势不明显。年日照时数、年平均风速、年蒸发量均呈下降趋势。年蒸发量与年日照时数的相关性最显著,其次为年平均风速、年降水量,与年日照时数和年平均风速呈正相关,而与年降水量呈负相关。

Analysis on Climate Change Characteristics in Dalian City from 1951 to 2009

With routine meteorological data in Dalian City from 1951 to 2009,the variation characteristics of the air temperature,precipitation,sunlight hours,wind speed,evaporation were analyzed.The results showed that the annual average temperature increased significantly;spring and winter average temperature increased more than summer and autumn average temperature;annual minimum temperature increased more than maximum temperature;precipitation had no obvious variation;annual sunlight hours,average wind speed,evapo...