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RISAssimilation of Surface Pressure Observations Using an Ensemble Filter in an Idealized Global Atmospheric Prediction System
Publisher: American Meteorological Society
Abstract: An ensemble filter data assimilation system is tested in a perfect model setting using a low resolution Held?Suarez configuration of an atmospheric GCM. The assimilation system is able to reconstruct details of the model?s ...
Global Soil Moisture Estimation by Assimilating AMSR-E Brightness Temperatures in a Coupled CLM4–RTM–DART System
Publisher: American Meteorological Society
Abstract: ery few frameworks exist that estimate global-scale soil moisture through microwave land data assimilation (DA). Toward this goal, such a framework has been developed by linking the Community Land Model, version 4 (CLM4), ...
Estimating Snow Water Storage in North America Using CLM4, DART, and Snow Radiance Data Assimilation
Publisher: American Meteorological Society
Abstract: his paper addresses continental-scale snow estimates in North America using a recently developed snow radiance assimilation (RA) system. A series of RA experiments with the ensemble adjustment Kalman filter are conducted ...
Improving the Radiance Assimilation Performance in Estimating Snow Water Storage across Snow and Land-Cover Types in North America
Publisher: American Meteorological Society
Abstract: ontinental-scale snow radiance assimilation (RA) experiments are conducted in order to improve snow estimates across snow and land-cover types in North America. In the experiments, the ensemble adjustment Kalman filter is ...
Scale-Dependent Representation of the Information Content of Observations in the Global Ensemble Kalman Filter Data Assimilation
Publisher: American Meteorological Society
Abstract: lobal data assimilation systems for numerical weather prediction (NWP) are characterized by significant uncertainties in tropical analysis fields. Furthermore, the largest spread of global ensemble forecasts in the short ...
DART/CAM: An Ensemble Data Assimilation System for CESM Atmospheric Models
Publisher: American Meteorological Society
Abstract: he Community Atmosphere Model (CAM) has been interfaced to the Data Assimilation Research Testbed (DART), a community facility for ensemble data assimilation. This provides a large set of data assimilation tools for climate ...
Insights on Sea Ice Data Assimilation from Perfect Model Observing System Simulation Experiments
Publisher: American Meteorological Society
Abstract: AbstractSimulating Arctic sea ice conditions up to the present and predicting them several months in advance has high stakeholder value, yet remains challenging. Advanced data assimilation (DA) methods combine real ...