Browsing by Author "Retterer, John M."
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Item Restricted Assimilative modeling of the equatorial ionosphere for scintillation forecasting: modeling with vertical drifts(American Geophysical Union, 2005-11-19) Retterer, John M.; Decker, D. T.; Borer, W. S.; Daniell Jr., R. E.; Fejer, B. G.Knowledge of the vertical plasma drift velocity observed by the Jicamarca incoherent radar in seven events is assimilated into a theoretical model for the ambient F region plasma density. Comparisons of the calculated plasma density model and the observed plasma density show that, apart from the signature effects of equatorial plasma bubbles, the ambient model captures much of the detail of the plasma density profiles. Rayleigh‐Taylor growth rates calculated with the ambient model show a good correlation with the occurrence of spread F.Item Restricted Physics‐based forecasts of equatorial radio scintillation for the Communication and Navigation Outage Forecasting System (C/NOFS)(American Geophysical Union, 2005-12-28) Retterer, John M.The plans for producing long‐term (6–24 hour) forecasts of equatorial plasma structure and radio scintillation for the Communication and Navigation Outage Forecasting System (C/NOFS) program are described. We discuss the calculations and computer models required to represent the physics of the phenomena pertinent to the C/NOFS mission. We describe the means by which the models will be integrated into a system that ingests satellite data and provides forecast maps. The plans for validation of the calculations are outlined briefly, with a few sample results.