SPENVIS

• spenvis.oma.be radiation and atmosphere models (no, I don't know what O M A stands for, if anything. There main web page refers to "Space Pole", and I don't know what that means, either.

• SPENVIS tutorial on space radiation

  • ring current drift: ions eastward, electrons westward

• AP-8 Trapped Proton Environment for Solar Maximum and Solar Minimum (19770012039.pdf) pg 7, paragraph 4: "The AP8MAX equatorial radial profiles differ from AP8MIN only for L below 1.3 Earth radii (1900 km altitude) and, therefore, are not shown." Plots from page 87 to 93: