Preprints
https://doi.org/10.5194/gmd-2019-298
https://doi.org/10.5194/gmd-2019-298

Submitted as: model evaluation paper 24 Feb 2020

Submitted as: model evaluation paper | 24 Feb 2020

Review status: this preprint was under review for the journal GMD but the revision was not accepted.

Intercomparison between the Integrated Urban land Model and the Noah Urban Canopy Model

Chunlei Meng and Junxia Dou Chunlei Meng and Junxia Dou
  • Institute of Urban Meteorology, China Meteorological Administration, 100089, Beijing, China

Abstract. Urban land surface model (ULSM) is an important tool to study the climatic effect of human activity. Now there are two main methods to parameterize the effects of human activity, the coupling method and the integrating method. For the coupled method, the urban canopy model (UCM) was developed and coupled with the land surface model for the natural land surfaces. For the integrated method, the urban land surface model was built directly based on the traditional land surface model. In this paper, the Noah Single Layer Urban Canopy Model (Noah/SLUCM) and the Integrated Urban land Model (IUM) were compared using the observed fluxes data at the 325-meter meteorology tower in Beijing. Through the comparison, the key factors and physical processes of the urban land surface model which have significant impact on the performance of ULSM were found out. The results indicate that the absorbed solar radiation of urban surface was reduced by the solar radiation scattering, the absorption of building roof and wall, and the shading effect of urban canopy and tall buildings. Urban surface roughness length and friction velocity are important in urban sensible heat flux simulation. Urban water balance and impervious surface evaporation (ISE) are important in urban latent heat flux simulation.

Chunlei Meng and Junxia Dou

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Chunlei Meng and Junxia Dou

Chunlei Meng and Junxia Dou

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