Impact of a Detailed Urban Parameterization on Modeling the Urban Heat Island in Beijing Using TEB-RAMS
作者:Jiang, L (Jiang, Lei)[ 1,2 ] ; Lu, LX (Lu, Lixin)[ 3 ] ; Jiang, LM (Jiang, Lingmei)[ 4,5 ] ; Qi, YY (Qi, Yuanyuan)[ 1 ] ; Yang, AQ (Yang, Aqiang)[ 1 ]
ADVANCES IN METEOROLOGY
文献号: 602528
DOI: 10.1155/2014/602528
出版年: 2014

摘要
The Town Energy Budget (TEB) model coupled with the Regional Atmospheric Modeling System (RAMS) is applied to simulate the Urban Heat Island (UHI) phenomenon in the metropolitan area of Beijing. This new model with complex and detailed surface conditions, called TEB-RAMS, is from Colorado State University (CSU) and the ASTER division of Mission Research Corporation. The spatial-temporal distributions of daily mean 2 m air temperature are simulated by TEB-RAMS during the period from 0000 UTC 01 to 0000 UTC 02 July 2003 over the area of 116 degrees E similar to 116.8 degrees E, 39.6 degrees N similar to 40.2 degrees N in Beijing. The TEB-RAMS was run with four levels of two-way nested grids, and the finest grid is at 1 km grid increment. An Anthropogenic Heat (AH) source is introduced into TEB-RAMS. A comparison between the Land Ecosystem-Atmosphere Feedback model (LEAF) and the detailed TEB parameterization scheme is presented. The daily variations and spatial distribution of the 2 m air temperature agree well with the observations of the Beijing area. The daily mean 2 m air temperature simulated by TEB-RAMS with the AH source is 0.6 K higher than that without specifying TEB and AH over the metropolitan area of Beijing. The presence of urban underlying surfaces plays an important role in the UHI formation. The geometric morphology of an urban area characterized by road, roof, and wall also seems to have notable effects on the UHI intensity. Furthermore, the land-use dataset from USGS is replaced in the model by a new land-use map for the year 2010 which is produced by the Institute of Remote Sensing and Digital Earth (RADI), Chinese Academy of Sciences (CAS). The simulated regional mean 2 m air temperature is 0.68 K higher from 01 to 02 July 2003 with the new land cover map.

通讯作者地址: Lu, LX (通讯作者)
Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA.
地址:
[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
[ 2 ] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[ 3 ] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA
[ 4 ] Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China
[ 5 ] Chinese Acad Sci, Beijing Normal Univ, Inst Remote Sensing Applicat, Sch Geog, Beijing 100875, Peoples R China