This work was supported by NSF Grant EAR-9725698 and NASA Headquarters under the Earth System Science Fellowship Grant No. NGT5-30405. Technical assistance with SHAW was graciously provided by Gerald Flerchinger. Thanks also are given to Bill Kustas for providing data and to those involved with the Monsoon '90 project. Climate data and guidance on soil moisture spinups were provided by Guido Salvucci. Last, we are grateful for the comments of two anonymous reviewers who provided constructive comments on this paper.
Amano, E. and G. D. Salvucci. 1999. Detection and use of three signatures of soil-limited evaporation. Remote Sens. Environ. 67:108–122.
Brutsaert, W. and D. Chen. 1995. Desorption and the two stages of drying of natural tallgrass prairie. Water Resour. Res. 31:1305–1313.
Camuffo, D. and A. Bernardi. 1982. An observational study of heat fluxes and their relationships with net radiation. Bound-Layer Meteor. 23:359–368.
Capehart, W. J. and T. N. Carlson. 1997. Decoupling of surface and near-surface soil water content: A remote sensing perspective. Water Resour. Res. 33:1383–1395.
Cellier, P., G. Richard, and P. Robin. 1996. Partition of sensible heat fluxes into bare soil and the atmosphere. Agric. For. Meteor. 82:245–265.
Choudhury, B. J. 1987. Relationships between vegetation indices, radiation absorption, and net photosynthesis evaluated by a sensitivity analysis. Remote Sens. Environ. 22:209–233.
Clothier, B. E., K. L. Clawson, P. J. Pinter Jr., M. S. Moran, R. J. Reginato, and R. D. Jackson. 1986. Estimation of soil heat flux from net radiation during the growth of alfalfa. Agric. For. Meteor. 37:319–329.
Crawford, T. M., D. J. Stensrud, T. N. Carlson, and W. J. Capehart. 2000. Using a soil hydrology model to obtain regionally averaged soil moisture values. J. Hydrometeor. 1:353–363.
Cuenca, R. H., M. Ek, and L. Mahrt. 1996. Impact of soil water property parameterization on atmospheric boundary layer simulation. J. Geophys. Res. 101:7269–7277.
Deardorff, J. 1978. Efficient prediction of ground surface temperature and moisture, with inclusion of a layer of vegetation. J. Geophys. Res. 83:1889–1903.
de Bruin, H. A. R. and A. A. M. Holtslag. 1982. A simple parameterization of the surface fluxes of sensible and latent heat during daytime compared with the Penman–Monteith concept. J. Appl. Meteor. 21:1610–1621.
Flerchinger, G. N., W. P. Kustas, and M. A. Weltz. 1998. Simulating surface energy fluxes and radiometric surface temperatures for two arid vegetation communities using the SHAW model. J. Appl. Meteor. 37:449–460.
Friedl, M. A. 1996. Relationships among remotely sensed data, surface energy balance, and area-averaged fluxes over partially vegetated land surfaces. J. Appl. Meteor. 35:2091–2103.
Friedl, M. A. 2002. Forward and inverse modeling of land surface energy balance using surface temperature measurements. Remote Sens. Environ. 79:344–354.
Humes, K. S., W. P. Kustas, and M. S. Moran. 1994. Use of remote sensing and reference site measurements to estimate instantaneous surface energy balance components over a semiarid rangeland watershed. Water Resour. Res. 30:1363–1373.
Hymer, D. C., M. S. Moran, and T. O. Keefer. 2000. Soil water evaluation using a hydrologic model and calibrated sensor network. Soil Sci. Soc. Amer. J. 64:319–326.
Idso, S. B., R. J. Reginato, R. D. Jackson, B. A. Kimball, and F. S. Nakayama. 1974. The three stages of drying of a field soil. Soil Sci. Soc. Amer. Proc. 23:183–187.
Idso, S. B., J. K. Aase, and R. D. Jackson. 1975. Net radiation–soil heat flux relations as influenced by soil water content variations. Bound-Layer Meteor. 9:113–122.
Jackson, R. D., M. S. Moran, L. W. Gay, and L. H. Raymond. 1987. Evaluating evaporation from field crops using airborne radiometry and ground-based meteorological data. Irrig. Sci. 8:81–90.
Kustas, W. P. and C. S. T. Daughtry. 1990. Estimation of the soil heat flux/net radiation ratio from spectral data. Agric. For. Meteor. 49:205–233.
Kustas, W. P., R. D. Jackson, and G. Asrar. 1989. Estimating surface energy balance components from remotely sensed data. Theory and Application of Optical Remote Sensing, G. Asrar, Ed., John Wiley and Sons, 604–627.
Kustas, W. P., C. S. T. Daughtry, and P. J. van Oevelen. 1993. Analytical treatment of the relationships between soil heat flux/net radiation ratio and vegetation indices. Remote Sens. Environ. 46:319–330.
Kustas, W. P., X. Zhan, and T. J. Schmugge. 1998. Combining optical and microwave remote sensing for mapping energy fluxes in a semiarid watershed. Remote Sens. Environ. 64:116–131.
Kustas, W. P., J. H. Prueger, J. L. Hatfield, K. Ramalingam, and L. E. Hipps. 2000. Variability in soil heat flux from a mesquite dune site. Agric. For. Meteor. 103:249–264.
Liang, X., E. F. Wood, and D. P. Lettenmaier. 1999. Modeling ground heat flux in land surface parameterization schemes. J. Geophys. Res. 104:9581–9600.
Mecikalski, J. R., G. R. Diak, M. C. Anderson, and J. M. Norman. 1999. Estimating fluxes on continental scales using remotely sensed data in an atmospheric–land exchange model. J. Appl. Meteor. 38:1352–1369.
Menenti, M. and J. C. Ritchie. 1994. Estimation of effective aerodynamic roughness of Walnut Gulch watershed with laser altimeter measurements. Water Resour. Res. 30:1329–1337.
Moran, M. S., W. P. Kustas, A. Vidal, D. I. Stannard, J. H. Blanford, and W. D. Nichols. 1994. Use of ground-based remotely sensed data for surface energy balance evaluation of a semiarid rangeland. Water Resour. Res. 30:1339–1349.
Norman, J. M., W. P. Kustas, and K. S. Humes. 1995. A two-source approach for estimating soil and vegetation energy fluxes from observations of directional radiometric surface temperature. Agric. For. Meteor. 77:263–293.
Norman, J. M., W. P. Kustas, J. H. Prueger, and G. R. Diak. 2000. Surface flux estimation using radiometric temperature: A dual-temperature-difference method to minimize measurement errors. Water Resour. Res. 36:2263–2274.
Ogee, J., E. Lamaud, Y. Brunet, P. Berbigier, and J. M. Bonnefond. 2001. A long-term study of soil heat flux under a forest canopy. Agric. For. Meteor. 106:173–186.
Salvucci, G. D. 1997. Soil and moisture independent estimation of stage-two evaporation from potential evaporation and albedo or surface temperature. Water Resour. Res. 33:111–122.
Santanello Jr., J. A. and T. N. Carlson. 2001. Mesoscale simulation of rapid soil drying and its implications for predicting daytime temperature. J. Hydrometeor. 2:71–88.
Sellers, P. J., F. G. Hall, G. Asrar, D. E. Strebel, and R. E. Murphy. 1992. An overview of the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE). J. Geophys. Res. 97:18345–18372.
van de Griend, A. A. and M. Owe. 1994. Bare soil surface resistance to evaporation by vapor diffusion under semiarid conditions. Water Resour. Res. 30:181–188.
van Genuchten, M. T. 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Amer. J. 44:892–898.