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Detailed Reference Information |
Decker, D.T., Valladares, C.E., Sheehan, R., Basu, S., Anderson, D.N. and Heelis, R.A. (1994). Modeling daytime F layer patches over Sondrestrom. Radio Science 29: doi: 10.1029/93RS02866. issn: 0048-6604. |
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A comprehensive, time-dependent, high-latitude, one-species F region model has been developed to study the various physical processes which are believed to affect the polar cap plasma density distributions as a function of altitude, latitude, longitude, and local time. These processes include production of ionization by solar extreme ultraviolet radiation and particle precipitation; loss through charge exchange with N2 and O2; and transport by diffusion, neutral winds, and convection E¿B drifts. In our initial calculations we have modeled highly structured plasma densities characterized by digisonde observations at Sondrestrom using both a time-dependent global convection pattern and spatially localized regions of transient high-speed flow. We find that the model is very sensitive to the details of the time-dependent convection pattern, and both the time dependence and the high-speed flows contribute to the F-region structure. Further, when we use high-speed flows based on specific radar observations the simulated density structure is in reasonable agreement with that day's digisonde observations. |
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Abstract |
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Keywords
Ionosphere, Polar cap ionosphere |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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