题名：Results of solid precipitation measurement intercomparison in the alpine area of Urumqi River Basin

摘要：It is absolutely important to know the accuracy of the measurements of the GDSF in various climatic and topographic conditions because this instrument has been designated as the reference for the intercomparison and its low catch efficiency or overestimation certainly has a considerable effect on accurately assessing the value of new measuring method，the catch effieiency of all the gages involved in the intercomparison and on the reliability of winde effect correction as well. Gunther stated that the double fence roduced the wind speed at the gage orifice by 65一75% when the wind speed out of the fence reached 5.0m/s and on the average of 2300 events of wind speed measurements，it reduced the wind speed by 60%.This does not mean that gage within the fence could catch the true snowfall. In fact it is a question if the fence makes turbulence over gage orifice. Golubev had found out a method for correcting the GDSF for wind speed according to the snow depth measurements in the forest area.Goodison applied it to Canadian intercomparison data and improved the correlation between the catch effieiency and wind speed. We will use snowboard and measure new snow depth and its density on the ground around the GDSF so as to define the accuracy of the instrument in the high alpine area. 

作者：施雅风

来源（出处）：Chinese Science Bulletin, 36(13): 1105—1109

出版日期：1991