【作者】 白虎志； 任国玉； 张爱英；

【Author】 Bai Huzhi (Lanzhou Central weather station observatory Lanzhou 730020) Ren Guoyu (National Climate Center, CMA, Beijing 100081) Zhang Aiying (Shandong Meteorological Center, Jinan 250031)

【机构】 兰州中心气象台； 中国气象局国家气候中心； 山东省气象局专业气象台；

【摘要】 本文对甘肃省国家基本/基准站、代表性的城市站和乡村站1961～2002年共42年季、年平均温度资料进行了对比分析。结果表明:城市站和国家基本/基准站比乡村站增温趋势显著,而且增温率随海拔高度的增高而增加。近40多年来城市热岛效应相对乡村站温度来讲,对基本/基准站年平均温度的增温贡献率为18.5%,对城市站年平均温度的增温贡献率为37.6%。季节增温率冬季最大、秋季次之;春夏季最小;城市热岛效应对季节增暖的贡献率则为春季最大、夏季次之、秋冬季最小。更多还原

【Abstract】 Using data of monthly mean temperature from 38 stations over Gansu Province, effect of increased urban heat island magnitude on the regional annual and seasonal mean temperature series as constructed based on the national basic/reference stations and six urban stations was analyzed for period of 1961-2002. It has been found that the trends of temperature change as calculated using data from national basic/reference stations and urban stations are generally larger than that from rural stations. The rural stations consist of six “pure” countryside stations across the province. The contributions of increased urban heat island magnitude to the trends of regional mean temperature change calculated based on data from national basic/reference stations and six urban stations are estimated as being 18.5%, and 37.6% respectively. It is also interesting to note that, on the basis of national basic/reference stations records, maximum warming rate of the regional seasonal mean temperature occurred in wintertime, and maximum urban warming rate occurred in wintertime, but the largest relative contribution of increased urban heat island magnitude to the regional warming rate was in springtime.更多还原