主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2017, Vol. 33 ›› Issue (2): 53-62.doi: 10.3969/j.issn.1673-503X.2017.02.007

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Applicability analysis of air temperature data from regional automatic weather stations in Shijiazhuang

YUE Yan-xia, ZHI Li-hui, WANG Lei, CAO Chun-li   

  1. Shijiazhuang Meteorological Service, Shijiazhuang 050081, China
  • Received:2016-04-13 Revised:2016-06-30 Online:2017-04-30 Published:2017-04-30

Abstract: The similarities and differences of spatial distributions of hourly and daily air temperature observed at national and regional weather stations were crossly compared,which include observational data of hourly air temperature and daily maximum and minimum air temperature from 17 national weather stations and 61 regional weather stations in Shijiazhuang region from 2009 to 2015.The results show that observational environment has larger influence on daily maximum air temperature and smaller effect on daily minimum air temperature.The differences of air temperature among different regions in Shijiazhuang are the largest in winter,the smallest in summer,and moderate in spring and autumn.Effect of solar radiation can reduce the temperature difference between different regions.Temperature difference quickly reduces after sunrise and reaches the smallest as radiation is the strongest.The largest temperature differences occur after sunset and remain a high level until sunrise.The values of air temperature are low in the northwestern mountainous region of Shijiazhuang and are higher in the eastern plain region,and highest in the urban region.The usage of different weather stations under different observational environment has more effects on the statistical value of daily minimum air temperature than that on daily maximum air temperature.The seasonal variation of temperature differences observed at national stations from 23:00 to the next day 10:00 can represent the temperature variation in the entire region,however,such representativeness is worse at other hours and worst from 18:00 to 20:00.The urban heat island effect appears more obvious in the main urban region than in the surrounding area of Shijiazhuang during nighttime in winter,and the maximum air temperature in the mountainous region is smaller than that in the urban region in summer.The urban cold island effect is most obvious in county city than in villages and towns at daytime in winter and spring.

Key words: National station, Regional station, Air temperature, Observational environment, Heat island, Cold island

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