| 天山乌鲁木齐河源降水观测误差分析及其改正 |
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| 引用本文： | 杨大庆,姜彤,张寅生,康尔泗.天山乌鲁木齐河源降水观测误差分析及其改正[J].冰川冻土,1988(4). |
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| 作者姓名： | 杨大庆 姜彤 张寅生 康尔泗 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所
(杨大庆，姜彤，张寅生)，中国科学院兰州冰川冻土研究所(康尔泗) |
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| 摘 要： | 乌鲁木齐河源不同雨量计观测降水对比以及普通雨量计湿润损失和蒸发损失实验表明,普通雨量计观测降水中的动力损失(修正量/观测降水量)为13.9％,湿润损失为8.4％,蒸发损失为3.7％,三项之和为26.0％。修正以上观测偏差,得到乌鲁木齐河源1号冰川粒雪线处(4050m)年平均降水量645.8mm。
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| 关 键 词： | 山地降水 降水观测 雨量计 误差 修正 |
Analysis and Correction of Errors in PrecipitationMeasurement at the Head of UrumqiRiver,Tianshan |
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| Yang Daqing,Jiang Tong,Zhang Yinsheng and Kang Ersi.Analysis and Correction of Errors in PrecipitationMeasurement at the Head of UrumqiRiver,Tianshan[J].Journal of Glaciology and Geocryology,1988(4). |
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| Authors: | Yang Daqing Jiang Tong Zhang Yinsheng and Kang Ersi |
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| Abstract: | The concepts of wind effect, wetting and evaporation losses in precipitation measurement are introduced and the factors affecting the losses are analysed. Based on the comparative measuements of precipitation with different gauges and wind shields and also on the observation of wetting and evaporation losses at the head of the Urumqi River in the summer of 1986, the 26% cacth deficie ncy (13.9% for wind effect, 8.4% for wetting and 3.7% for evaporation respectively) for a standard gauge of China is determined. With the correction of the errors mentioned above ,the accurate value of average annual precipitation ,524.2 mm and 645.8 mm, is obtained respectively at the altitudes of 3540 m a.s.l and 4050 m a.s.l at the head of the Urumqi River. |
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| Keywords: | mountain precipitation precipitation measurement precipitation gauge error correction |
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