Open AccessHigh‐resolution FUV spectroscopy of the terrestrial day airglow with the Far Ultraviolet Spectroscopic Explorer
Author(s) -
Feldman Paul D.,
Sahnow David J.,
Kruk Jeffrey W.,
Murphy Edward M.,
Moos H. Warren
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 - 10.1029/2000ja000356
Subject(s) - airglow , spectral resolution , spectral line , ionization , physics , ultraviolet , spectroscopy , excited state , far ultraviolet , thermosphere , extreme ultraviolet , ionosphere , atomic physics , atmospheric sciences , astronomy , optics , laser , ion , quantum mechanics
During orbital verification the Far Ultraviolet Spectroscopic Explorer obtained spectra of the terrestrial day airglow between 905 and 1184 Å from an altitude of 766 km. The spectrographs have three apertures that can simultaneously record the atmospheric emissions with limiting instrumental spectral resolutions of approximately 0.4, 0.05, and 0.03 Å. Seven orbits were obtained of observations of the sunlit Earth and disclose a wealth of emissions resulting from the electron impact excitation of N 2 in addition to emissions of O I, N I, and N II produced by both photoelectron impact and by photodestructive excitation and ionization of thermospheric O and N 2 by extreme ultraviolet solar radiation. The argon resonance transitions are unambiguously identified as are previously unreported transitions between highly excited energy levels of O + . These spectra have the highest spectral resolution and sensitivity in this spectral range to date and will provide valuable input to the interpretation of lower resolution spectra from current and future Earth remote sensing missions.