J. Judge et al., A growing season Land Surface Process/Radiobrightness model for wheat-stubble in the Southern Great Plains, IEEE GEOSCI, 37(5), 1999, pp. 2152-2158
Citations number
23
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Our point-scale Land Surface Process/Radio-brightness (LSP/R) model for a p
rairie grassland in the northern Great Plains was adapted to winter wheat-s
tubble within the region of the Southern Great Plains 1997 (SGP'97) Hydrolo
gy Experiment. The model maintains running estimates of nearsurface soil mo
isture and stored mater in soil and vegetation when forced by weather, and
predicts the microwave brightness of the terrain. LSP/R model predictions w
ere compared with the field observations recorded during SGP'97, The model
captures canopy and soil temperatures very well, with the maximum mean and
variance of the difference between the model and field temperatures being 1
.06 EE and 3.28 K-2, respectively. It yields reasonable predictions for the
moisture In deeper layers of the soil, but its predictions for the moistur
e in the upper layers are low by similar to 2.3% by volume. These underpred
ictions of near-surface soil moisture result in higher H-pol brightnesses a
t 19 GHz than those observed.