呼伦湖湖泊降水过程分布特征及其影响因素初析  

A Preliminary Analysis of the Distribution Characteristics and Influencing Factors of Precipitation Processes in Hulun Lake

作　　者：董娜 郭瑞芳 仲夏 包玉海[1,2] Dong Na;Guo Ruifang;Zhong Xia;Bao Yuhai(College of Geographical Sciences,Inner Mongolia Normal University,Inner Mongolia Hohhot 010022;Inner Mongolia Key Laboratory of Remote Sensing&Geographical Information System,Inner Mongolia Hohhot 010022;Inner Mongolia Meteorological Observatory,Inner Mongolia Hohhot 010051)

机构地区：[1]内蒙古师范大学地理科学学院,内蒙古呼和浩特010022 [2]内蒙古自治区遥感与地理信息系统重点实验室,内蒙古呼和浩特010022 [3]内蒙古自治区气象台,内蒙古呼和浩特010051

出　　处：《内蒙古气象》2023年第5期21-29,共9页Meteorology Journal of Inner Mongolia

基　　金：内蒙古自治区自然科学基金项目(2021SHZR1718);国家自然科学基金项目(41901051);内蒙古师范大学高层次人才科研启动经费项目(2020YJRC008)共同资助。

摘　　要：基于2018年CMFD地表气象驱动数据集、2018—2019年CMPAS实时融合实况分析数据、2012—2021年湖泊附近3个气象站观测数据以及GPM_IMERG卫星遥感反演降水数据,分析呼伦湖不同尺度降水的时空分布特征,探讨湖泊降水过程及其影响因素。结果表明:(1)日尺度上呼伦湖白昼降水多于夜间降水,湖面降水多于陆面降水。(2)小时尺度上针对典型降水事件,降水峰值多出现在11:00和14:00左右,以及21:00—次日03:00;5月和6月除21:00—23:00,距离湖泊越远的陆面降水越多,7月和9月除21:00—23:00,距离湖泊越近的陆面降水越多。(3)在月/季节尺度上,湖泊效应在6—9月作用较大,在7月达到最大,5—6月距离湖泊超出一定范围(湖泊周围50 km陆面)作用会减小。(4)平均气温对湖泊降水具有明显影响,在湖泊效应作用较明显的空间范围内(50 km陆面),总体上温差(满洲里站与新巴尔虎右旗站相比)越大,降水也越大。Based on the 2018 CMFD surface weather-driven dataset,the 2018-2019 CMPAS real-time fusion live analysis data,the 2012-2021 observation data of three meteorological observing stations near the lake,and the GPM_IMERG satellite remote sensing retrieval precipitation data,this article analyzed the spatial-temporal distribution characteristics of precipitation at different scales in Hulun Lake.The precipitation processes in the lake and their influencing factors were discussed.The results showed that:(1)On the daily scale,there was more daytime precipitation than nighttime precipitation in Hulun Lake,and there was more precipitation on the lake than on the land.(2)On the hourly scale,for typical precipitation events,the peak precipitation mostly occurred around 11:00 and 14:00 during the daytime,and from 21:00 to 03:00 the next day during the nighttime.In May and June,except for 21:00-23:00,the farther away from the lake the more precipitation occurred on the land.In July and September,except for 21:00-23:00,the closer to the lake the more precipitation occurred on the land.(3)On the monthly and seasonal scale,the lake effect was larger from June to September and reached its maximum in July,and the effect decreased at distances greater than 50km from the lake from May to June.(4)Average temperature had a significant effect on the precipitation on the lake.Within 50km of the lake,where the lake effect was obvious,the greater the temperature difference(Manzhouli station compared to New Balhu right Banner station),the greater the precipitation.

关 键 词：呼伦湖 降水强度 降水频率 时空变化特征 湖泊效应 

分 类 号：P426.6[天文地球—大气科学及气象学] K928.43[历史地理—人文地理学]