HR: 09:30h
AN: A51E-07    [Abstracts]
TI: Dynamics of Leaf Area for Atmospheric Models
AU: * Dickinson, R E
EM: robted@eas.gatech.edu
AF: Geogria Institute of Technology, #311 Ferst Drive, Atlanta, GA 30332, United States
AB: We address the interactions between the terrestrial vegetation, surface hydrology, and the atmosphere. These interactions occur through many parameters and on multiple time scales. Biophysical coupling controls the evolution of the plant canopies and their impacts on weather and climate on time scales of days out to seasons. The concept of dynamic vegetation has been developed as a framework for modeling the longer time scale changes of the terrestrial biosphere that are of importance for climate models. This paper develops an approach to dynamic vegetation modeling on the time scales over which satellite observations observe variability of canopy properties and so allows linking a dynamic understanding of canopy processes with the observations that can be made to describe the dynamic state of the canopy and so to interface terrestrial remote sensing data with the dynamic state of weather and climate models. It builds on the idea that the most important short term drivers of natural canopy variability are water and thermal stresses.
DE: 0320 Cloud physics and chemistry
DE: 0321 Cloud/radiation interaction
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly