Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa51a1531g&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SA51A-1531
Mathematics
Logic
2411 Electric Fields (2712), 2415 Equatorial Ionosphere, 2431 Ionosphere/Magnetosphere Interactions (2736), 3369 Thermospheric Dynamics (0358), 6979 Space And Satellite Communication
Scientific paper
The first Defense Meteorological Satellite Program (DMSP) spacecraft was launched in 1972; the last is scheduled to fly in 2012. Presently, there is no replacement for the space weather monitoring instruments that fly on DMSP. These sensors have provided extensive, long-term data sets that constitute a critical component of the US space weather capabilities. The US Air Force is currently considering options for new space weather missions. Evolving operational needs and recent research accomplishments justify continued collection of space environmental data. Examples include measurements to: (1) monitor in real time the Dst index that will drive next-generation satellite drag models; (2) calibrate electromagnetic energy flux from the magnetosphere into the ionosphere and thermosphere that heats neutrals and drives winds that degrade precise orbit determinations (3) determine strengths of electric fields at high and low latitudes during the main phase of magnetic storms that lead to severe blackouts and spacecraft anomalies (4) characterize plasma density irregularities, equatorial plasma bubbles, and Appleton anomaly variability to improve reliability of transionospheric communication and surveillance links; (5) characterize particle flux responsible for auroral clutter and radar degradation; (6) map regions of L-Band scintillation for robust GPS applications; and (7) update the World Magnetic Field Model to maintain superiority in guidance systems. These examples illustrate the need for continued space environment awareness. Comprehensive assessments of both operational requirements and research advances are needed to inform selections of sensors and spacecraft that will define future operational capabilities.
Burke William J.
de La Beaujardiere Odile
Gentile Louise C.
Huang Chang-Yin
Rich Frederic J.
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