Using the urban high-resolution land data assimilation system (u-HRLDAS) for improving urban land surface parameter simulation in Beijing

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• 作者：Chunlei Meng
• 会议时间：2011-11-01
• 关键词：u-HRLDAS ; urban ; land surface temperature ; land surface fluxes
• 作者单位：Institute of Urban Meteorology,CMA,Beijing,China 100089
• 母体文献：2011年第二十八届中国气象学会年会论文集
• 会议名称：2011年第二十八届中国气象学会年会
• 会议地点：厦门
• 主办单位：中国气象学会
• 语种：chi
• 分类号：P4;TP3

摘要

This paper uses a high-resolution land data assimilation system (u-HRLDAS) to parameterize the urban land surface characteristics. The u-HRLDAS model is localized and developed in order to satisfy the need of the weather forecast in Beijing China. The remote sensing data using to localize and drive u- HRLDAS includes the soil type data, MODIS retrieved LAI data. The result of the urban weather forecast based on the the rapid update cycle system at Beijing Meteorological Bureau (BJ-RUC) without coupled with u-HRLDAS is used for the comparison. The land surface temperature, land surface fluxes and first layer soil moisture in several single sites and BJ-RUC D03 region are compared by using BJ-RUC with u- HRLDAS after localization. The results indicate that u-HRLDAS can improve the simulation of land surface temperature and land surface fluxes definitely.