Soil temperature and moisture profiles play a crucial role in governing energy and moisture fluxes between bare soils and the atmosphere. These profiles also co-determine radiobrightness so that the difference between model-predicted and observed radiobrightness becomes a measure of error in a model's estimate of temperature or moisture. In this paper, we present a physically based, coupled moisture and temperature, one-dimensional Hydrology/Radiobrightness (idH/R) model for bare soil that is subject to freezing and thawing. We use this model to predict thermal, hydrologic, and radiobrightness signatures for a three-month simulation period in fall/winter on the northern Great Plains as part of an investigation of the influence of water transport on these signatures. Given a typical initial moisture content of 38%, we find that the difference in surface liquid water content between water transport and no water transport cases grows to 19% during the three-month period, and that the difference in surface ice content reaches 21% over the same period. The diurnal radiobrightness variation differs between the two cases by as much as 37 Kelvins.
|Number of pages||3|
|State||Published - 1996|
|Event||Proceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4) - Lincoln, NE, USA|
Duration: 28 May 1996 → 31 May 1996
|Conference||Proceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4)|
|City||Lincoln, NE, USA|
|Period||28/05/96 → 31/05/96|