Accession Number : ADA265032


Title :   High-Latitude Electric Field Studies Using DMSP Data


Descriptive Note : Final rept. 1 Dec 1989-28 Feb 1993


Corporate Author : TEXAS UNIV AT DALLAS RICHARDSON CENTER FOR SPACE SCIENCES


Personal Author(s) : Hairston, M R ; Heelis, R A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265032.pdf


Report Date : 18 Feb 1993


Pagination or Media Count : 51


Abstract : Analysis using data from the ion drift meter in the SSIES instrument package on the DMSP series of satellites is used to calculate the electrostatic potential distribution in the polar ionosphere. Numerous geophysical parameters such as the location and magnitude of the potential extreme and the classification of the potential distribution as one of the three Heppner-Maynard models can be derived from this data analysis. An earlier version of this analysis procedure (DMSPPOTMOD) is described. This procedure has been expanded into a series of programs under the name DMSPDBASE which generate a database of the ionospheric parameters and results from this analysis. These calculated parameters serve as necessary inputs to the MSFM (Magnetospheric Specification and Forecast Model) used by the Air Weather Service. This report describes each version of the series up to the final version DMSPDBASE4 along with a description of the formats used for the database. New algorithms have been added to the routine in order to improve the selection routine for the endpoints, generalize the Heppner-Maynard model classification algorithm so that it will accommodate any orientation of the satellite track, calculate the true cross polar cap potential drop from the observed potential drop, etc. Analysis results into characterizing the overall potential distribution in both hemispheres during time of southward IMF and analysis of the evolution of the potential distribution during times of northward IMF are presented. Various collaborations with other users incorporating DMSP data are listed along with presentations and publications which have come from this work.


Descriptors :   *DATA BASES , *IONOSPHERE , *IONS , *ARTIFICIAL SATELLITES , *SPACECRAFT , ALGORITHMS , INPUT , WEATHER , MODELS , DISTRIBUTION , SPECIFICATIONS , AIR , PARAMETERS , CONVECTION , TIME , DRIFT , DROPS , DOCUMENTS , FORMATS , CLASSIFICATION , PATTERNS , POLAR CAP , SELECTION , HEMISPHERES , ELECTROSTATICS , TRACKS


Subject Categories : Atmospheric Physics
      Information Science
      Atomic and Molecular Physics and Spectroscopy
      Astronautics
      Unmanned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE