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A Case Study of the Variational Assimilation of GPS Zenith Delay Observations into a Mesoscale Model
Publisher: American Meteorological Society
Abstract: Results from a case study of the four-dimensional variational assimilation of total zenith delay (TZD) observations from a dense global positioning system (GPS) network into the Pennsylvania State University?National Center ...
An Adjoint Sensitivity Study of the Efficacy of Modal and Nonmodal Perturbations in Causing Model Block Onset
Publisher: American Meteorological Society
Abstract: With a blocking index as the response function, the adjoint sensitivity formalism is used to assess the impact of normal modes, adjoint modes, and regional singular vectors on prediction of block onset in a two-layer model. ...
Sensitivity of Surface Air Temperature Analyses to Background and Observation Errors
Publisher: American Meteorological Society
Abstract: A two-dimensional variational method is used to analyze 2-m air temperatures over a limited domain (4° latitude ? 4° longitude) in order to evaluate approaches to examining the sensitivity of the temperature analysis to ...
The Real-Time Mesoscale Analysis at NOAA’s National Centers for Environmental Prediction: Current Status and Development
Publisher: American Meteorological Society
Abstract: n 2006, the National Centers for Environmental Prediction (NCEP) implemented the Real-Time Mesoscale Analysis (RTMA) in collaboration with the Earth System Research Laboratory and the National Environmental, Satellite, and ...