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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kustas, W.P. Albertson, J.D. Cahill, A.T. Scanlon, T.M. |
| Copyright Year | 2000 |
| Description | Author affiliation: USDA-ARS Hydrology Lab., Beltsville, MD, USA (Kustas, W.P.) |
| Abstract | During the The Southern Great Plains 1999 (SGP99) Hydrology Experiment, radiometric temperature and surface energy balance data were collected over 4 fields in the Little Washita Watershed which comprise the major land cover types for this region. The radiometric temperature observations together with local screen level air temperature measurements are used with "single-source" approaches for computing sensible heat flux. The results suggest that single-source approaches require site specific calibrations. In addition, for regional applications with satellite data, this approach is particularly sensitive to uncertainty in specifying air temperature for each pixel. An alternative "two-source" approach, which considers soil and vegetation contribution to the radiometric temperature observation and turbulent heat fluxes is described. When used in a time difference scheme with temporal trace in radiometric and air temperature observations, it is shown to be significantly less sensitive to uncertainty in these observations compared to approaches which use absolute radiometric-air temperature differences. |
| Starting Page | 1072 |
| Ending Page | 1074 |
| File Size | 292959 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780363590 |
| DOI | 10.1109/IGARSS.2000.858025 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-07-24 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radiometry Temperature sensors Land surface temperature Hydrology Land surface Temperature measurement Calibration Satellite broadcasting Soil Vegetation |
| Content Type | Text |
| Resource Type | Article |
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