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冰川冻土  2003 

新疆降水在气候转型中的信号反应

, PP. 179-182

Keywords: 降水,气候转型,信号,新疆

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Abstract:

针对气候转型科学问题的提出,根据新疆61处国家水文气象观测站点的资料,通过5a滑动平均、模比系数差积曲线、线性趋势等方法对新疆降水分析计算.结果显示,近50a来新疆年降水量总体呈增加的变化趋势,全疆年降水量平均增幅0.67mm·a-1,天山山区增幅最大,达1.0~2.8mm·a-1.由减少转为增加变化的时间大多出现于1987年前后,以此为界,从1987年起气候转向暖湿的强劲信号不仅反映在新疆的天山西部地区,而且在全疆也有所反映,且南疆强于北疆,西部多于东部.

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