学科分类
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1 个结果
  • 简介:OnthebasisofNOAA/CPCdataofseasurfacetemperatureanomalyintheNinoregionsduringJan.1950-Dec.2003,thewaveletpowerspectrumofSSTwerestudiedwithsignificanceandconfidencetestingatdifferentscalesinthispaper.ItshowsthattheSSTareprovidedwithmulti-timescalesstructurenestedoneanother,andvaryonscalesof2-7years,8-20yearsand>30years.Themostsignificantvariationofthewarmandcoldepisodesisinthe4-yearbandofperiod.Thepower,frequencystructureandconfidenceofthesameepisodearedifferentindifferentNinoregions.TheintensityofoscillationsisincreasingatlowfrequencybandsanddecreasingathighfrequencybandsfromeasttowestintheNinoregions,especiallyafter1970.

  • 标签: 海洋气象 气候变化 冷热交替 SST 大气循环