Impact of Aerodynamic Resistance Formulations used in Two-Source Modeling of Energy Exchange from the Soil and Vegetation Using Land Surface Temperature

W. P. Kustas, H. Nieto Solana, A. Andreu, C. Cammalleri, D. Kool, N. Agam, J. G. Alfieri

Research output: Contribution to journalMeeting Abstract

Abstract

Application of the Two-Source Energy Balance (TSEB) Model using land surface temperature (LST) requires aerodynamic resistance parameterizations for the flux exchange above the canopy layer, within the canopy air space and at the soil/substrate surface. There are a number of aerodynamic resistance formulations that can be used, based on K-theory or Lagrangian approaches while others are semi-empirical derived from experimental data. These formulations require a within-canopy wind profile model as well as a parameterization for heat transfer from soil surface. The effect of the various parameterization schemes on TSEB output using tower and airborne LST observations over both highly-structured perennial crops, such as orchards and vineyards, and strongly clumped natural vegetation, such as woody savanna and desert shrublands will be presented. The utility of the various aerodynamic resistance formulas for application over these types of canopy architectures will also be discussed along with ongoing efforts to develop more reliable approaches for strongly-clumped and open-canopy environments for partitioning soil and canopy fluxes.
Original languageEnglish
JournalGeophysical Research Abstracts
StatePublished - 1 Dec 2016
Externally publishedYes

Keywords

  • 1622 Earth system modeling
  • GLOBAL CHANGEDE: 1818 Evapotranspiration
  • HYDROLOGY
  • HYDROLOGYDE: 1855 Remote sensing
  • HYDROLOGYDE: 1895 Instruments and techniques: monitoring

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