Variation Characteristics of Season Start Dates over China under the Global Warming
气候变暖背景下我国四季开始时间的变化特征

The variation trends of season start dates during recent 47 years were analyzed by using daily temperature data of 1961-2007 from 599 standard meteorological stations provided by the National Meteorological Information Center,China Meteorological Administration. The results show that the season start dates of spring and summer become earlier,of autumn and winter become later,of summer have the most obvious change,and this trend is the most evident in the beginning of the 21st century when the global warming...