Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa21b..07r&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SA21B-07
Mathematics
Logic
2415 Equatorial Ionosphere, 2435 Ionospheric Disturbances, 2439 Ionospheric Irregularities, 2447 Modeling And Forecasting
Scientific paper
The Defense Meteorological Satellite Program (DMSP) spacecraft, in circular near-polar orbits around 840 km altitude, occasionally observe depletions in plasma density when they cross the geomagnetic equator in the evening sector, at the times and places where low-density plasma plumes associated with equatorial spread F (ESF) radio-scintillation phenomena are expected to occur. Statistics for the frequency of observation of these depletions have been collected over the last eighteen years showing the seasonal and longitudinal variations of their rate of occurrence at various phases of the solar cycle. To better understand these probabilities, we have simulated these observations using first-principle models of the ambient ionosphere and bubble formation, using climatological drivers. The models are those which have been developed in preparation for the AFRL Communication/Navigation Outage Forecasting System (C/NOFS) mission. We will present maps of the frequency of occurrence of bubbles at 840 km altitude as a function of season and longitude calculated with the models and compare the results with the DMSP observations. These maps show the expected peaks in frequency of plasma bubbles near the equinoxes, with the additional winter peak in the American sector and the summer peak in the Pacific sector. The variation of bubble frequency with the phase of solar cycle will also be described.
Gentile Louise C.
Retterer J.
No associations
LandOfFree
Modeling the Climatology of Equatorial Plasma Bubbles Observed by DMSP Satellites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modeling the Climatology of Equatorial Plasma Bubbles Observed by DMSP Satellites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling the Climatology of Equatorial Plasma Bubbles Observed by DMSP Satellites will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1411728