激光雨滴谱仪与翻斗式雨量计降水量观测结果对比分析  

Comparison and Analysis of Precipitation Observation between Laser Raindrop Spectrometer and Rain Gauge

作　　者：王翠英 仲怡铭 仁增草 陈徵尼 宗文贞 刘通峰 凌雷 WANG Cuiying;ZHONG Yiming;REN Zengcao;CHEN Zhenni;ZONG Wenzhen;LIU Tongfeng;LING Lei(Gansu Xinglongshan National Natural Reserve Management and Conservation Center,Lanzhou 730199,China;Gansu Academy of Forestry Sciences,Lanzhou 730020,China;Gansu Xinglongshan Forest Ecosystem National Positioning Observation and Research Station,Lanzhou 730020,China;Beijing Weiruitai Technology Co Ltd,Beijing 101100,China)

机构地区：[1]甘肃兴隆山国家级自然保护区管护中心,甘肃兰州730199 [2]甘肃省林业科学研究院,甘肃兰州730020 [3]甘肃兴隆山森林生态系统国家定位观测研究站,甘肃兰州730020 [4]北京威瑞泰科技有限公司,北京101100

出　　处：《甘肃林业科技》2024年第3期73-78,共6页Journal of Gansu Forestry Science and Technology

基　　金：甘肃省公益林生态效益监测(二期)“[2021]89号”;黄土高原区典型森林水分承载力研究“2022kj051”。

摘　　要：为探究激光雨滴谱仪和翻斗式雨量计在降水量观测中的差异,本文利用兴隆山森林生态系统国家定位观测研究站林外标准气象场内激光雨滴谱仪与翻斗式雨量计观测的降水数据,对比分析了两种仪器在小、中、大三种降水强度下的降水量、月降水量的差异以及差异产生的原因。结果表明:(1)两种仪器观测的累计降水量在小雨强度下差异最大,主要是由于降水强度很小时,雨滴小而雨速较缓,翻斗式雨量计达到了应翻转雨量才会翻动,反应滞后;(2)两种仪器观测的小时累计降水量相关关系随着雨强的增大而变大;(3)2023年5月—2024年5月,激光雨滴谱仪观测的降水量相对翻斗式雨量计的偏高,其中2023年5—9月差值较小,而2023年10月至次年2月差值较大,主要是由于激光雨滴谱仪能够识别雨夹雪、雪等小粒子。综上所述,激光雨滴谱仪和翻斗式雨量计各有优缺点,在实际应用中可根据具体需求和野外观测条件将两种仪器结合起来进行降水量观测。In order to explore the difference between laser raindrop spectrometer and rain gauge in precipitation observation,precipitation data were observed by laser raindrop spectrometer and rain gauge based on standard meteorological field outside the forest of Xinglong Mountain Forest Ecosystem National Positioning Observation and Research Station in this study.The differences of precipitation and monthly precipitation and the causes of the differences between the two instruments were compared and analyzed respectively under three kinds of precipitation intensity:small,medium and large.The results show that:(1)The accumulated precipitation observed by the two instruments is the most different under light rain intensity,mainly because the precipitation intensity is very small,with little raindrop and the slowly rain speed,as well as the rain gauge will flip when it reaches the required turnover rainfall,resulting lagging the reaction.(2)The correlation between the hourly cumulative precipitation observed by the two instruments positively increases followed with the increase of rainfall intensity;(3)From May 2023 to May 2024,the precipitation observed by the laser raindrop spectrometer is higher than that of the rain gauge.Besides,during May and September in 2023 the difference is tiny,while in October of 2023 to February of the following year the difference is obvious,mainly because the laser raindrop spectrometer can identify small particles such as sleet and snow.In summary,the laser raindrop spectrometer and the rain gauge have their advantages and disadvantages.In practical application,the two instruments can be combined to observe precipitation according to specific needs and field observation conditions.

关 键 词：激光雨滴谱仪 翻斗式雨量计 降水量 月际变化 

分 类 号：S715.7[农业科学—林学]