TREND OF PRECIPITATION VARIATION IN HUBEI PROVINCE SINCE THE 1960S

1INTRODUCTIONOneoftheeffectsofglobalwarmingisthatprecipita-tionhasincreasedoversomeareasintheworld,andthegaugedataofprecipitation (excludingAntarctica)showthatglobalprecipitationhasincreasedslightlybyabout9mmforthe20thcentury, whichwas verysmallcomparedwiththeinterannualandmul-ti-decadalvariability(NEWetal.,2001).Butregion-ally,thereexisted agreatdealofdifferences,suchasinmostpartsofAfrica, Amazon,westernSouthAmerica,theweatherhasbecomedrier,andinmostpartsofEuropeandCanada,thereexisted…

Trend of precipitation variation in Hubei Province since the 1960S

Through linear regression analysis to the trend of annual, seasonal and monthly precipitation of 72 meteorological stations in Hubei Province from 1961 to 1995, it is revealed that: 1) annual precipitation was increasing by 61.0mm/10a in the eastern part of Hubei (112°E as a dividing line) and decreasing by 34.9mm/10a in the western part; 2) precipitation in winter and summer (January, February, March, June and July) was increasing in almost whole province which usually with non-uniformity of precipitation distribution from the south to the north. The precipitation in spring, autumn and winter (April, September, November and December) was decreasing in most of the areas which usually with non-uniformity of precipitation distribution from the east to the west. March and December were transition periods between two spatial distribution patterns mentioned above; 3) the eastern part of Hubei has beome one of precipitation increasing centers in China. The results was consistent with the trend that more frequent flood and drought events happened in Hubei Province which are more different in spatial and temporal scales. Foundation item: Under the auspices of the key project of National Tenth Five-year Plan(No.2001BA611B-01) Biography: CHEN Zheng-hong (1964–), male, a native of Hubei, professor, Master of Science, specialized in applied meteorology, diagnosis on climatic change and disaster mitigation