地面积雪测量与雨量器量测降雪量一致性实验研究  

Experimental Study on Comparability of Snowfall Measurement by Precipitation Gage and Snow Survey

作　　者：杨大庆[1] 张志忠[1] 康尔泗[1] 张寅生[1] KellyElder RichardKattelmann 

机构地区：[1]中国科学院兰州冰川冻土研究所,兰州730000 [2]美国加利福尼亚大学圣.巴巴拉分校遥感和环境光学中心

出　　处：《水科学进展》1992年第2期136-141,共6页Advances in Water Science

基　　金：国家自然科学基金;美国航天局资助项目

摘　　要：1989年10月至1990年5月间的8个降水时段的对比测量表明,乌鲁木齐河源高山区空冰斗小流域内雨量器冬季测量的降雪量约为地面积雪测量所得实际降雪量的73％,二者的测量结果不具有一致性,因此,雨量器的测量值不能代表地面实际降雪量.在流域水量平衡和融雪径流计算中,必须首先修正降雪量测量的系统误差。According to the comparative measurement of 8 snowfalls by using the methods of precipitation gages and snow survey on the ground in a small alpine watershed of the Urumqi River Basin during the period between Oct. 1989 to May 1990, it is found that the Chinese standard precipitation gages catch 73% of the relative ground true snowfall. Therefore the snowfall measurement of the gage has a poor representative to the basin-wide snowfall. This systematic error caused by wind effect on the gage should be corrected first for water budget calculation and snow-melt runoff simulation in mountain area.

关 键 词：地面 积雪 观测 雨量器 

分 类 号：P426.635[天文地球—大气科学及气象学]