整理出海南1962-2004年的熱帶氣旋的降水資料,我們分析了海南省熱帶氣旋降在海南省總降水中的地位及其變化特征,結(jié)果表明:海南熱帶氣旋降水平均占年總降水量30%,但呈每10 a 3%的顯著線性下降趨勢;海南熱帶氣旋降水與年總降水相關(guān)顯著,年總降水顯著偏少的年份,熱帶氣旋降水偏少;熱帶氣旋降水顯著偏多的年份,年總降水量偏多;海南熱帶氣旋降水變化的空間特征表現(xiàn)為明顯的一致型,時間特征表現(xiàn)明顯的周期性:高頻的年際變化周期70年代前期以前為3 a周期為主,80年代中期以后以2 a的周期為主;低頻的年際變化周期80年代以前以8—9 a為主,80年代以后以準6 a為主;年代際變化則以準17 a的周期為主。
Abstract:
Based on tropic cyclone rainfall in Hainan from 1962 to 2004,Hainan Tropic Cyclone rainfall’s status,its climate change characters and the mainly impacting factors are analyzed.Results show that the rate of Hainan Tropic Cyclone rainfall amounts to about 30 percent of whole precipitation,but it has a linear decreasing tendency at the rate of 3 percent every 10 years.Spatial character of Hainan Tropic Cyclone rainfall's change assumes persistence and temporal character of that change assumes periodicity.High frequent annual periods mainly are 2 years before 1970's and 3 years after middle 1980's.Low frequent yearly periods mainly are 8 to 9 years before 1980's and quasi 6 years after then.Decadal period mainly is quasi 17 years.
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吳勝安,郭冬艷,楊金虎.海南熱帶氣旋降水的氣候特征.氣象科學(xué),2007,(3):307-311 Wu Shengan, Guo Dongyan, Yang Jinghu. HAINAN TROPIC CYCLONE RAINFALL''''S CLIMATE CHARACTERS. Journal of the Meteorological Sciences,2007,(3):307-311