内蒙古1991-2020年风速变化及其人为影响因素OA北大核心CSTPCD

Based on annual mean surface wind speed data from 1991 to 2020 and the historical evolution infor-mation of 118 meteorological stations in Inner Mongolia and the national population census in 2010 and 2020,and ac-cording to information such as urban population growth rate、station migration,instrument height changes,and sta-tion detection environment changes that affect ground wind speed,the stations are divided into four categories for comparative analysis.The results show that、average wind speed in Inner Mongolia is larger in the north than in the south and in the west than in the east;the trend of wind speed change is decreasing,with significant differences a-mong stations.The reason for this is related to urbanization and station changes.Among them,urbanization contrib-utes more to the trend of wind speed reduction than station changes.The impact of changes in the detection environ-ment on wind speed is very significant,approximately 1～3 times that of the regional background wind speed varia-tion trend;the higher the degree of urbanization,the greater the change in wind speed after station relocation.About 63.2％of the sudden changes in wind speed data at various stations are caused by station changes.