河西走廊黑河流量的气候特征及其预报

CLIMATIC CHARACTERISTICS AND FORECAST OF THE FLOW OF HEIHE RIVER IN THE HEXI CORRIDOR AREA

本文利用黑河流量资料,分析了径流本身的持续性、周期性及年际变化。统计表明,4月径流与前期2月青藏高原地面加热场强度存在较好的正相关。前期500hPa 高度距平特征可预示未来5月黑河流量。

Using the data set of the flow of Heihe river,we have analyzed the persistence,periodicity and annual variation of the flow.It is shown that there is a good positive correlation between theflow of Heihe river in April and surface heating field over the Qinghai-Xizang Plateau in Febru-ary of the year.The departure characteristics of 500hPa in March have the predictability to theflow of Heihe river for coming May.