The Common Land Model-Urban Building Community Model (CoLM-UBCM)

!----------------------------------------------------------------------- ! ! --- CoLM Urban Building Community Model --- ! ! Sun ! \\\ ! \\\ ! ______ ! |++++++| roof ! |++++++|_ AC ______ ! |++++++|_| ___ |++++++| ! ______+++++| ||||| |++++++| ! |++++++|++++| ||||||| |++++++| ! sunlit |[]++[]|++++| ||||| |++++++| shaded ! wall |++++++| | tree |++++++| wall ! |[]++[]| | |++++++| ! |++++++| impervious/pervious ground ! __________|++++++|____________________________________ ! !----------------------------------------------------------------------- CoLM Urban Building Community Model Description Unlike traditional urban canyon models, the Common Land Model (CoLM) Urban Building Community Model (UBCM) is built upon the concept of a three-dimensional urban building community that incorporates trees and water bodies. We have developed a novel approach for representing shortwave and longwave radiation transfer, as well as turbulent exchange, within this three-dimensional urban environment, with vegetation simulations fully integrated into both processes. The UBCM leverages comprehensive high-resolution datasets describing urban land cover, geometric structure, vegetation, and water bodies. It also provides a relatively complete representation of human processes, including building energy consumption, traffic heat, metabolic heat, and urban irrigation.