Spatial and Temporal of the Four Seasons Variation Characteristics in the Northern China
The spatial and temporal variation characteristics of start date,length and accumulated temperatures of the four seasons in Northern China are analyzed based on daily temperature of 1960-2009 from 56 meteorological stations.Seasons are divided by 5 days’ moving average temperatures.Climate tendency coefficients and GIS are used to analyze seasonal variation characteristics.The results show that： springs and summers are coming earlier;autumns are coming later while the start dates of winter have little changes.In most areas,springs,autumns and winters are becoming shorter while summers are longer and the proportion of severe winters reduced.Temperatures in springs are lower while autumns,winters and severe winters are warmer,and summers are much more hot.
Northern Chinavariation characteristics of the four seasonspatial and temporal distribution
NETL
NSTL
万方数据
维普
