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Observing System Experiments Using the AFGL Four-Dimensional Data Assimilation System
Publisher: American Meteorological Society
Abstract: Five observing system experiments have been performed with the Air Force Geophysics Laboratory (AFGL) global data assimilation system (GDAS). Each experiment includes one week of data assimilation during each of the two ...
The Response of Damaging Winds of a Simulated Tropical Cyclone to Finite-Amplitude Perturbations of Different Variables
Publisher: American Meteorological Society
Abstract: Four-dimensional variational data assimilation (4DVAR) is an established data assimilation method that finds the finite-amplitude perturbation that best fits observations consistent with a priori information and model ...
A Multiyear Global Surface Wind Velocity Dataset Using SSM/I Wind Observations
Publisher: American Meteorological Society
Abstract: The Special Sensor Microwave Imagers (SSM/I) aboard three DMSP satellites have provided a large dataset of surface wind speeds over the global oceans from July 1987 to the present. These data are characterized by high ...
A Two-Dimensional Variational Analysis Method for NSCAT Ambiguity Removal: Methodology, Sensitivity, and Tuning
Publisher: American Meteorological Society
Abstract: In this study, a two-dimensional variational analysis method (2DVAR) is applied to select a wind solution from NASA Scatterometer (NSCAT) ambiguous winds. A 2DVAR method determines a ?best? gridded surface wind analysis ...
The Effects of Marine Winds from Scatterometer Data on Weather Analysis and Forecasting
Publisher: American Meteorological Society
Abstract: Satellite scatterometer observations of the ocean surface wind speed and direction improve the depiction of storms at sea. Over the ocean, scatterometer surface winds are deduced from multiple measurements of reflected ...