HR: 0800h
AN: H41A-0398    [Abstracts]
TI: Relationship between ground heat flux and net radiation in the Florida Everglades
AU: * Guha, A
EM: aniguha@ufl.edu
AF: University of Florida, Department of Civil and Coastal Engineering 365 Weil Hall PO Box 116580, Gainesville, FL 32611 United States
AU: Hatfield, K
EM: khatf@ce.ufl.edu
AF: University of Florida, Department of Civil and Coastal Engineering 365 Weil Hall PO Box 116580, Gainesville, FL 32611 United States
AU: Jacobs, J
EM: jennifer.jacobs@unh.edu
AF: University of New Hampshire, Department of Civil Engineering 35 Colovos Road, Durham, NH 03824 United States
AB: Ground heat flux, G, plays an important part in partitioning the energy fluxes at the Earth's surface. The fraction of the incoming net radiation, Rn that is absorbed by the land surface determines the amount of energy returned to the atmosphere in the form of sensible heat H and latent heat LE fluxes. In wetland environments and shallow lake bodies, daytime water column and soil heating of up to 700 Wm² have been reported. This indicates that an accurate estimation of G is even more important in wetlands than terrestrial landscapes to resolve the energy balance. One of the most commonly used methods to estimate G is to parameterize it as a constant fraction of Rn. In this study, we characterize G/Rn relationships for the Everglades region. We also present a new methodology based on heat conduction to estimate total G given water surface temperature measurements in wetland areas.
DE: 1814 Energy budgets
DE: 1840 Hydrometeorology
DE: 1843 Land/atmosphere interactions (1218, 1631, 3322)
DE: 1890 Wetlands (0497)
SC: Hydrology [H]
MN: Fall Meeting 2005