Title :
Validating the new SEE low altitude proton model
Author :
Vampola, A.L. ; Lauriente, M. ; Huston, S. ; Pfitzer, K.
Author_Institution :
Univ. Res. Found., Greenbelt, MD, USA
Abstract :
The low altitude (860 km) weather satellites TIROS-N and the NOAA series measured the inner zone energetic protons for more than a solar cycle. Data from the 16-215, 36-215, and 80-215 MeV omnidirectional proton sensors have been corrected for magnetic field model and time-tagging errors and then organized in terms of the average column-density of residual atmosphere along their drift path. The solar cycle variation in the F10.7 index is used as a proxy for the solar cycle variation in scale height of the atmosphere. A phase lag in the atmospheric response must be included in the analysis. This approach results in a well-organized data set for an entire solar cycle. The program which is still underway, has produced a preliminary 80-215 MeV model for the region below 860 km. The model is organized in terms of L, B/Bmin, and F10.7. The model is cross-correlated with Hubble Space Telescope anomaly data (623 km altitude orbit). This model correctly predicts a solar-cycle-associated westward shift in the effective location of the South Atlantic Anomaly, while AP8 does not
Keywords :
cosmic ray protons; geophysical aspects of cosmic rays; magnetosphere; radiation belts; 16 to 215 MeV; 860 km; AP8 model; NOAA; SEE low altitude proton model; South Atlantic Anomaly; TIROS-N; cosmic ray proton; cosmic rays; effective location; inner zone energetic protons; magnetosphere; radiation belt; solar cycle variation; trapped particle; weather satellite; westward shift; Artificial satellites; Atmosphere; Atmospheric measurements; Atmospheric modeling; Energy measurement; Error correction; Extraterrestrial measurements; Magnetic field measurement; Magnetic sensors; Protons;
Conference_Titel :
High Energy Radiation Background in Space, 1997 Conference on the
Conference_Location :
Snowmass, CO
Print_ISBN :
0-7803-4335-2
DOI :
10.1109/CHERBS.1997.660239