HR: 0830h
AN: SM41B-0577    [PDF]
TI: Correlation between DMSP Particle Data and Polar Image Intensities
AU: * Carbary, J
EM: james.carbary@jhuapl.edu
AF: Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hoplins Rd, Laurel, MD 20723 United States
AU: Sotirelis, T
EM: tom.sotirelis@jhuapl.edu
AF: Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hoplins Rd, Laurel, MD 20723 United States
AU: Meng, C
EM: ching.meng@jhuapl.edu
AF: Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hoplins Rd, Laurel, MD 20723 United States
AB: Precipitating particle data from the DMSP F12 and F13 satellites has been merged with image intensities from the Ultraviolet Imager (UVI) and Earth Camera (EC) on the Polar satellite. Particle data were averaged within an image accumulation time and matched with the image intensity along the corresponding segment of the DMSP trajectory in magnetic local time coordinates. The particle data and image intensity data of many hundreds of such matches were then correlated with a simple linear fit. The image intensities have the best correlation with precipitating electron energy, and the intensities correlate less well with other particle data such as the precipitating proton data, at least when considering the overall polar region. Similar correlations can be performed to detail energy input into a specific region of interest, such as the dawn or dusk side of the oval, or the equatorward or poleward side. The good correlation between the precipitating particles and the image intensities suggests that imagers can be directly calibrated to measure energy input without the additional complication of modeling the intensities based on hypothetical particle fluxes. In this way, a map of global energy input into the aurora may be derived based wholly on measurements
DE: 0358 Thermosphere--energy deposition
DE: 2407 Auroral ionosphere (2704)
DE: 2455 Particle precipitation
DE: 2704 Auroral phenomena (2407)
DE: 2716 Energetic particles, precipitating
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting