NCEP资料在内蒙古地区年季尺度上的分析  

Analysis of NCEP Data on the Annual and Quarterly Scale of Inner Mongolia

作　　者：张保龙[1] ZHANG Baolong(Bayannur Meteorological Bureau,Bayannur 015000,China)

机构地区：[1]内蒙古巴彦淖尔市气象局,内蒙古巴彦淖尔015000

出　　处：《宁夏工程技术》2020年第1期1-4,共4页Ningxia Engineering Technology

摘　　要：内蒙古地区土地面积大,气象站密度小,利用美国国家环境预报中心(简称NCEP)再分析资料对分析该地区气温变化有较好的补充作用。对2 m气温在内蒙古地区近10年的分布特征进行分析,并用NCEP再分析资料做检验。结果表明,2009—2014年,年平均气温T_(OBS)偏高,2015—2018年T_(NCEP)偏高,偏差平均值0.25℃;T_(NCEP)和T_(OBS)的线性变化趋势都呈逐年增加趋势,通过0.001的T检验。年平均气温T_(NCEP)和T_(OBS)的气温差空间分布不均,以T_(NCEP)偏高为主。夏季、秋季大部地区T_(NCEP)高于T_(OBS),冬季、春季T_(NCEP)低于T_(OBS)。偏差平均值夏季最高1.3℃,春、秋季最低,分别为-0.3℃和0.3℃。The area of Inner Mongolia is large and the density of meteorological stations is small.The use of NCEP reanalysis data has a better complementary role in this paper.The distribution characteristics of 2 m temperature in Inner Mongolia in the past 10 years are analyzed,and the NCEP reanalysis data are tested.The results show that in 2009—2014,the annual average temperature TOBS is on high side,but in 2015—2018,TNCEP is on high side,with an average deviation of 0.25℃.The linear trend of TNCEP and TOBS increases year by year,and passed the T test of 0.001.The spatial distribution of temperature difference between annual average temperature TNCEP and TOBS is uneven,and TNCEP is higher.In summer and autumn,TNCEP is higher than TOBS,while in winter and spring,TNCEP is lower than TOBS.The mean deviation is 1.3℃in summer and-0.3℃in spring and 0.3℃in autumn.

关 键 词：NCEP再分析资料 气温 内蒙古地区 季节 

分 类 号：P443[天文地球—大气科学及气象学]