摘要
根据辽宁省61个气象站1961—2020年逐日气温和降水量数据,对比分析1991—2020年和1981—2010年新旧气候平均值变化及对辽宁省气候业务的影响。结果表明:1—11月平均气温、平均最高气温、平均最低气温均升高;10—12月降水量增幅最大。年及四季平均气温、平均最高和最低气温均升高,增幅自东部和西部山区向中部平原地区增大,中部区域增幅最为显著;平均气温和平均最高气温均以春季增幅最大,平均最低气温夏季增幅最大。年、夏季和秋季降水量减少,春季和冬季增加;7—8月降水量总体减少,东部山区和大连沿海地区降水量增加;7月下旬—8月上旬降水量增加,辽宁西部和南部地区增幅最大,为5%~6%,北部地区增幅最小。气候平均值改变后,四季平均气温及降水量评价等级均发生了变化。
Using daily temperature and precipitation data of 61 meteorological stations in Liaoning province from 1961 to 2020,the changes of the old and new elimate averages for 1991-2020 and 1981-2010 and the impacts on climate operations in Liaoning province were compared and analysed.The resuls show that:The average temperature,average maximum temperature and average minimum temperature increased from January to November;the largest increase in precipitation occurred in October to December.The average temperature,average maximum and average minimum temperature in annual and four--seasons all increased,from the mountainous areas in the east and west to the central plains,with the most significant increase in the central region;the average temperature and average maximum temperature all increased most in spring,with the average minimum temperature in summer.The annual,summer and autumn precipitation decreased,and the precipitation in spring and winter increased;the precipitation in July to August decreased,but the precipitation increased in the eastern mountainous area and the coastal area of Dalian.During late July to early August,the precipitation increased by 5%--6%in westem and southern area,and the least in northern area.Wih the change of climate averages,the evaluation grade of average temperature and precipitation in four seasons all changed.
作者
周晓宇
赵春雨
ZHOU Xiaoyu;ZHAO Chunyu(Regional Climate Center of Shenyang,Shenyang 110166,China)
出处
《沙漠与绿洲气象》
2023年第3期149-156,共8页
Desert and Oasis Meteorology
基金
中国气象局创新发展专项(CXFZ2021J047)
中国气象局气候变化专项(CCSF201841、CCSF202013)。
关键词
气候平均值
气候业务
气候变化
辽宁省
climate average
climate operations
elimate change
Liaoning province
