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RISA Dynamic Approach to Addressing Observation-Minus-Forecast Bias in a Land Surface Skin Temperature Data Assimilation System
Publisher: American Meteorological Society
Abstract: n land data assimilation, bias in the observation-minus-forecast (O ? F) residuals is typically removed from the observations prior to assimilation by rescaling the observations to have the same long-term mean (and ...
Global Assimilation of Multiangle and Multipolarization SMOS Brightness Temperature Observations into the GEOS-5 Catchment Land Surface Model for Soil Moisture Estimation
Publisher: American Meteorological Society
Abstract: ultiangle and multipolarization L-band microwave observations from the Soil Moisture Ocean Salinity (SMOS) mission are assimilated into the Goddard Earth Observing System Model, version 5 (GEOS-5), using a spatially ...
Improvement of Modeled Soil Wetness Conditions and Turbulent Fluxes through the Assimilation of Observed Discharge
Publisher: American Meteorological Society
Abstract: The objective of this paper is to improve the performance of a hydrologic model through the assimilation of observed discharge. Since an observation of discharge at a certain time is always influenced by the catchment ...
Adaptive Soil Moisture Profile Filtering for Horizontal Information Propagation in the Independent Column-Based CLM2.0
Publisher: American Meteorological Society
Abstract: Data assimilation aims to provide an optimal estimate of the overall system state, not only for an observed state variable or location. However, large-scale land surface models are typically column-based and purely random ...
Assimilation of Freeze–Thaw Observations into the NASA Catchment Land Surface Model
Publisher: American Meteorological Society
Abstract: he land surface freeze?thaw (F/T) state plays a key role in the hydrological and carbon cycles and thus affects water and energy exchanges and vegetation productivity at the land surface. In this study, an F/T assimilation ...
Global Calibration of the GEOS-5 L-Band Microwave Radiative Transfer Model over Nonfrozen Land Using SMOS Observations
Publisher: American Meteorological Society
Abstract: zero-order (tau-omega) microwave radiative transfer model (RTM) is coupled to the Goddard Earth Observing System, version 5 (GEOS-5) catchment land surface model in preparation for the future assimilation of global brightness ...
Global Soil Water Estimates as Landslide Predictor: The Effectiveness of SMOS, SMAP, and GRACE Observations, Land Surface Simulations, and Data Assimilation
Publisher: American Meteorological Society
Assessment of MERRA-2 Land Surface Hydrology Estimates
Publisher: American Meteorological Society
Abstract: AbstractThe MERRA-2 atmospheric reanalysis product provides global, 1-hourly estimates of land surface conditions for 1980?present at ~50-km resolution. MERRA-2 uses observations-based precipitation to force the land (unlike ...
Satellite-Scale Snow Water Equivalent Assimilation into a High-Resolution Land Surface Model
Publisher: American Meteorological Society
Abstract: Four methods based on the ensemble Kalman filter (EnKF) are tested to assimilate coarse-scale (25 km) snow water equivalent (SWE) observations (typical of passive microwave satellite retrievals) into finescale (1 km) land ...
Assessment and Enhancement of MERRA Land Surface Hydrology Estimates
Publisher: American Meteorological Society
Abstract: he Modern-Era Retrospective Analysis for Research and Applications (MERRA) is a state-of-the-art reanalysis that provides, in addition to atmospheric fields, global estimates of soil moisture, latent heat flux, snow, and ...