临河区近57年平均地面水汽压变化特征分析  

Analysis on the Variation Characteristics of Average Surface Water Pressure in Linhe District in the Past 57 Years

作　　者：张雁飞 ZHANG Yan-fei(Meteorological Bureau of Linhe District,Bayannaoer,Inner Mongolia 015000)

机构地区：[1]巴彦淖尔市临河区气象局,内蒙古巴彦淖尔015000

出　　处：《农业灾害研究》2019年第2期27-29,共3页Journal of Agricultural Catastrophology

摘　　要：利用临河区近57年(1961—2017年)逐日水汽压、气温、降水量、日照时数、相对湿度等气象因子记录进行统计,分析了临河区近57年来平均水汽压的年、季和月变化等特征及其影响因子。结果表明,临河区近57年平均水汽压总体呈下降趋势,平均每10年减少0.062 hpa;1961—1970年平均水汽压相对较大;1981—1990和2001—2010年相对较小;春、夏、秋、冬四季平均水汽压的变化以春季减小趋势最显著,其次是秋季,冬季呈现上升趋势;1—12月以7月最大,8月次之,1月最小;平均水汽压的年变化与平均气温、日照时数呈现负相关,与降水量、平均相对湿度呈现正相关。Using the weather factors such as daily water pressure,temperature,precipitation,sunshine duration and relative humidity in Linhe District during the past 57 years(1961-2017),the annual,seasonal and monthly changes characteristics and their impact factors of the average water pressure in Linhe District during the past 57 years were analyzed.The results show was that the average water pressure during the near 57 years area of Linhe District was generally decreasing,with the average decrease of 0.062 hPa every 10 years.The average water pressure was relatively increasing from 1961 to 1970 and relatively decreasing in 1981-1990 and 2001-2010.Relative to the other seasons,spring was more significant in average water pressure change,followed by autumn,and winter was the upward trend.From January to December,average water pressure change was the largest in July,the second in August,and the smallest in January.The annual variation of average water pressure was negatively correlated with average temperature and sunshine hours,and positively correlated with precipitation and average relative humidity.

关 键 词：水汽压 变化特征 影响因子 

分 类 号：P468.02[天文地球—大气科学及气象学]