P343.6 98031608青藏高原积雪变化趋势及其与气温和降水的关系一Variation trends of snow eover over the Tibe讯nPlateau and their relations to temperature and PreeiPita-tion/柯长青,李培基…//冰川冻土一1997,19(4).一289~294 ·根据60个地面基本气象台站1957~1990年逐日雪深、月平均气温、月降水量观测记录,用AR-MA(Pg)模型检验了青藏高原积雪变化趋势·结果表明:积雪呈增加趋势是普遍现象,并与格陵兰冰盖表面高程及南极大陆冰盖雪积累率增加相一致.青藏高原