Estimation of surface heat fluxes and evapotranspiration using community land model

Juan Du; Chaoshun Liu; Runhe Shi; Shijie Shu; Wei Gao

doi:10.1117/12.2021852

24 September 2013 Estimation of surface heat fluxes and evapotranspiration using community land model

Juan Du, Chaoshun Liu, Runhe Shi, Shijie Shu, Wei Gao

Proceedings Volume 8869, Remote Sensing and Modeling of Ecosystems for Sustainability X; 886915 (2013) https://doi.org/10.1117/12.2021852
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Land surface heat and water fluxes are key components of water and energy cycles between land and atmosphere. Information about these surface fluxes can guide agricultural production and environmental preservation, and manage different ecosystems to mitigate climate change. The main objective of this work is to estimate the surface heat fluxes and evapotranspiration. For this purpose, the Community Land Model Version 3 was used, atmospheric forcing data and flux observation were extracted from AmeriFlux standardized Level 2 database, then surface heat fluxes under two different underlying surfaces were modeled. The results showed that the model works well regarding the simulation of daily surface fluxes and diurnal surface fluxes although these values were underestimated relative to the values observed from eddycovariance. After validation, evapotranspiration was chosen as the indicator for specific comparison. CLM3.0 showed a better performance in simulating the moisture and evapotranspiration.

Citation Download Citation

Juan Du, Chaoshun Liu, Runhe Shi, Shijie Shu, and Wei Gao "Estimation of surface heat fluxes and evapotranspiration using community land model", Proc. SPIE 8869, Remote Sensing and Modeling of Ecosystems for Sustainability X, 886915 (24 September 2013); https://doi.org/10.1117/12.2021852

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KEYWORDS

Heat flux

Atmospheric modeling

Vegetation

Data modeling

Resistance

Solar radiation models

Ecosystems

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