Open AccessEmission of OI(630 nm) in proton aurora
Author(s) -
Lummerzheim D.,
Galand M.,
Semeter J.,
Mendillo M. J.,
Rees M. H.,
Rich F. J.
Publication year - 2001
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2000ja002005
Subject(s) - brightness , electron precipitation , defense meteorological satellite program , ionosphere , proton , satellite , altitude (triangle) , polar , atmospheric sciences , brightness temperature , geology , physics , meteorology , environmental science , geophysics , astronomy , magnetosphere , plasma , nuclear physics , geometry , mathematics
A red aurora occurred over southern Canada and central Maine on April 11, 1997, producing a brightness of OI(630 nm) of several Kilorayleighs, which lasted for several hours. Two passes of the Defense Meteorological Satellite Program (DMSP) F12 satellite occurred during this time, and optical data were obtained from four CEDAR Optical Tomographic Imaging Facility (COTIF) sites. The DMSP F12 particle spectrometers observed proton precipitation south of the electron aurora with energy fluxes of several mW m −2 . Tomographic inversion of the COTIF optical observations gives the altitude profile of emissions along a magnetic meridian. We combine all available data using an ionospheric auroral model. Our analysis shows that the model produces the observed auroral brightness from the proton precipitation alone.