Articles | Volume 38, issue 2
Ann. Geophys., 38, 481–490, 2020
Ann. Geophys., 38, 481–490, 2020

Regular paper 08 Apr 2020

Regular paper | 08 Apr 2020

AMPERE polar cap boundaries

Angeline G. Burrell et al.

Data sets

AMPERE R1/R2 FAC radii S. Milan

AMPERE John Hopkins Applied Physics Laboratory

Image Harald U. Frey

Madrigal database at CEDAR Bill Rideout

SPDF – Coordinated Data Analysis Web (CDAWeb) Tami Kovalick

Model code and software

lkilcommons/ssj_auroral_boundary: Version 1 L. Kilcommons and A. Burrell

aburrell/ocbpy: Beta Release A. Burrell and G. Chisham

Defense Meteorology Satellite Program (DMSP) Electron Precipitation (SSJ) Auroral Boundaries, 2010–2014 (Version 1.0.0) Liam Kilcommons, Robert Redmon, and Delores Knipp

Short summary
The Earth's polar upper atmosphere changes along with the magnetic field, other parts of the atmosphere, and the Sun. When studying these changes, knowing the polar region that the data come from is vital, as different processes dominate the area where the aurora is and poleward of the aurora (the polar cap). The boundary between these areas is hard to find, so this study used a different boundary and figured out how they are related. Future studies can now find their polar region more easily.