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United States Department of Agriculture

Agricultural Research Service

Title: Reply to Comments About the Basic Equations of Dual-Source Vegetation-Atmosphere Transfer Models

item Kustas, William

Submitted to: Agricultural and Forest Meteorology
Publication Type: Research Notes
Publication Acceptance Date: July 5, 1999
Publication Date: August 10, 1999

Technical Abstract: The note by Lhomme and Chehbouni (1999) (hereafter referred as LC) discusses the apparent contradictions in the basic conservation equations of dual-source vegetation models. They claim these inconsistencies appeared in several papers which includes the dual-source formulation of Norman et al. (1995) Agric. Forest Meteorol., 77:263-293]. This note clarifies the assumptions leading to our formulations which will show that there are no inconsistencies in our model (hereafter referred to as N95). Moreover, we propose modifications to Beer's law approach for estimating net radiation divergence and a simple method to account for clumped vegetation that attempts to accommodate typical heterogeneity associated with sparse vegetation in an alternative way to the "patch" approach.

Last Modified: 4/22/2015
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