下垫面改变对陕西省气温的影响  

Impact of underlying surface changes on temperature in Shaanxi

作　　者：魏娜[1] 李高[2] 

机构地区：[1]陕西省气候中心,陕西西安710015 [2]四川省绵阳市气象局,四川绵阳621000

出　　处：《西北大学学报（自然科学版）》2015年第6期1012-1016,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家气象科研专项基金资助项目(GYHY201006036)

摘　　要：分析近32年来下垫面改变对陕西省气温的影响,利用观测气温与再分析气温的差值(OMR),主要从台站迁移、城市化等方面分析下垫面改变对观测气温的影响,近32年来台站迁移和城市化对观测气温影响较大,台站迁移对OMR序列非常敏感,在台站迁移之前,OMR差值较小,台站迁移之后出现明显的跳跃,变化幅度较大;城市化对OMR序列的影响非常明显,随着城市化逐渐推进,OMR序列值也逐渐增加,尤其是2000年以后增加更为明显;从全省来看,陕北和关中地区因城市发展较快,且迁站较多,OMR序列值变化趋势较大,陕南地区除了个别台站因为迁站而受到明显的影响外,总体影响较弱。Impact of underlying surface changes on temperature in Shaanxi are analyzed in recent 32 years. U- sing the difference between the observed and the analyzed temperature, it finds that station relocation and ur- banization have influence on observed temperature. Station relocation is sensitive to OMR（ Observation minus Reanalysis） series. The values of OMR is smaller before station relocation, but the values jump bigger after station relocation. The urbanization has influence on OMR. The OMR series gradually increased as urbaniza- tion moves gradually, especially after 2000. From the point of the Province, the northern and the central Shaanxi for urban development is faster, and station relocation happens more, the OMR series change bigger. The southern Shaanxi has few station relocation, the OMR series change smaller.

关 键 词：台站迁移 城市化 气温 

分 类 号：P40[天文地球—大气科学及气象学]