Treatment of undercanopy turbulence in land models

Xubin Zeng, Robert E. Dickinson, Michael Barlage, Yongjiu Dai, Guiling Wang, Keith Oleson

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33 Scopus citations

Abstract

In arid and semiarid regions most of the solar radiation penetrates through the canopy and reaches the ground, and hence the turbulent exchange coefficient under canopy Cs becomes important. The use of a constant Cs that is only appropriate for thick canopies is found to be primarily responsible for the excessive warm bias of around 10 K in monthly mean ground temperature over these regions in version 2 of the Community Climate System Model (CCSM2). New Cs formulations are developed for the consistent treatment of undercanopy turbulence for both thick and thin canopies in land models, and provide a preliminary solution of this problem.

Original languageEnglish (US)
Pages (from-to)5086-5094
Number of pages9
JournalJournal of Climate
Volume18
Issue number23
DOIs
Publication statusPublished - Dec 1 2005

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ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Zeng, X., Dickinson, R. E., Barlage, M., Dai, Y., Wang, G., & Oleson, K. (2005). Treatment of undercanopy turbulence in land models. Journal of Climate, 18(23), 5086-5094. https://doi.org/10.1175/JCLI3595.1