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Estimation of snow parameters based on passive microwave remote sensing and meteorological information
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hwang, Jenq-Neng Tsang, Leung |
| Copyright Year | 1996 |
| Description | A method to incorporate passive microwave remote sensing measurements within a spatially distributed snow hydrology model to provide estimates of the spatial distribution of Snow Water Equivalent (SWE) as a function of time is implemented. The passive microwave remote sensing measurements are at 25 km resolution. However, in mountain regions the spatial variability of SWE over a 25 km footprint is large due to topographic influences. On the other hand, the snow hydrology model has built-in topographic information and the capability to estimate SWE at a 1 km resolution. In our work, the snow hydrology SWE estimates are updated and corrected using SSM/I passive microwave remote sensing measurements. The method is applied to the Upper Rio Grande River Basin in the mountains of Colorado. The change in prediction of SWE from hydrology modeling with and without updating is compared with measurements from two SNOTEL sites in and near the basin. The results indicate that the method incorporating the remote sensing measurements into the hydrology model is able to more closely estimate the temporal evolution of the measured values of SWE as a function of time. |
| File Size | 1441618 |
| Page Count | 43 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970005389 |
| Archival Resource Key | ark:/13960/t22c3z67j |
| Language | English |
| Publisher Date | 1996-07-15 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Water Dmsp Satellites Rio Grande North America River Basins Remote Sensing Satellite Imagery Spatial Distribution Microwave Imagery Colorado Topography Radiative Transfer Brightness Temperature Snow Cover Hydrology Models Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
