Conditioning a multiple‐patch SVAT Model using uncertain time‐space estimates of latent heat fluxes as inferred from remotely sensed data
- 1 September 1999
- journal article
- Published by American Geophysical Union (AGU) in Water Resources Research
- Vol. 35 (9) , 2751-2761
- https://doi.org/10.1029/1999wr900108
Abstract
It has been shown that the calibration of soil vegetation‐atmosphere transfer (SVAT) models is inherently uncertain, even when data are available over a relatively limited homogeneous area. The representation of subgrid‐scale variability of fluxes is not easily achieved because of the lack of information available about appropriate parameter distributions and their covariance. However, remote sensing of thermal surface responses offers the possibility of obtaining distributed estimates of surface fluxes. In this paper, multiple Landsat‐Thematic Mapper (TM) images of the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE) site are used to derive uncertain estimates of the land surface–atmosphere sensible and latent fluxes over a period of time. Employing a framework based on fuzzy set theory, the parameter space representing all feasible parameterizations of a SVAT model are examined with respect to these image estimates. Areal weightings for a number of functional types of flux behavior are then derived through which the temporal evolution of surface fluxes can be estimated.Keywords
This publication has 31 references indexed in Scilit:
- Functional similarity in landscape scale SVAT modellingHydrology and Earth System Sciences, 1999
- FIFE Surface Climate and Site-Average Dataset 1987–89Journal of the Atmospheric Sciences, 1998
- Extracting ecological and biophysical information from AVHRR optical data: An integrated algorithm based on inverse modelingJournal of Geophysical Research: Atmospheres, 1996
- Linking parameters across scales: Subgrid parameterizations and scale dependent hydrological modelsHydrological Processes, 1995
- Flux aggregation at large scales: on the limits of validity of the concept of blending heightJournal of Hydrology, 1995
- Application of aggregation models to surface heat flux from the Sahelian tiger bushAgricultural and Forest Meteorology, 1995
- Effective resistance to sensible- and latent-heat flux in heterogeneous terrainQuarterly Journal of the Royal Meteorological Society, 1993
- The future of distributed models: Model calibration and uncertainty predictionHydrological Processes, 1992
- A Parameterization of Heterogeneous Land Surfaces for Atmospheric Numerical Models and Its Impact on Regional MeteorologyMonthly Weather Review, 1989
- Estimation of soil heat flux from net radiation during the growth of alfalfaAgricultural and Forest Meteorology, 1986