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Assimilation of smos soil moisture retrievals in the land information system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Blakenship, Clay Zavodsky, Bradley Cae, Jonathan |
| Copyright Year | 2014 |
| Description | Soil moisture is a crucial variable for weather prediction because of its influence on evaporation. It is of critical importance for drought and flood monitoring and prediction and for public health applications. The NASA Short-term Prediction Research and Transition Center (SPoRT) has implemented a new module in the NASA Land Information System (LIS) to assimilate observations from the ESA's Soil Moisture and Ocean Salinity (SMOS) satellite. SMOS Level 2 retrievals from the Microwave Imaging Radiometer using Aperture Synthesis (MIRAS) instrument are assimilated into the Noah LSM within LIS via an Ensemble Kalman Filter. The retrievals have a target volumetric accuracy of 4% at a resolution of 35-50 km. Parallel runs with and without SMOS assimilation are performed with precipitation forcing from intentionally degraded observations, and then validated against a model run using the best available precipitation data, as well as against selected station observations. The goal is to demonstrate how SMOS data assimilation can improve modeled soil states in the absence of dense rain gauge and radar networks. |
| File Size | 338739 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140008788 |
| Archival Resource Key | ark:/13960/t5z65hz8f |
| Language | English |
| Publisher Date | 2014-02-02 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Radiometers Assimilation Soil Moisture Moisture Content Microwave Imagery Satellite Observation Kalman Filters Remote Sensing Information Systems Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
