Tn. Woods et al., Solar extreme ultraviolet irradiance measurements from sounding rockets during solar cycle 22, PHYS CH P C, 25(5-6), 2000, pp. 397-399
Citations number
17
Categorie Soggetti
Earth Sciences
Journal title
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE
Our sounding rocket measurements during solar cycle 22 include solar extrem
e ultraviolet (EUV) irradiances below 120 nm with 0.2 nm spectral resolutio
n, far ultraviolet (FUV) airglow spectra below 160 nm, and solar soft x-ray
(XUV) images at 17.5 nm. Compared to the earlier observations, these rocke
t experiments provide a more accurate absolute measurement of the solar EUV
irradiance because these instruments are calibrated at the National Instit
ute of Standards and Technology (NIST) with a radiometric uncertainty of ab
out 8%. These more accurate sounding rocket measurements suggest revisions
of the previous reference AE-E spectra by as much as a factor of 2 at some
wavelengths. Our sounding rocket flights during the past several years (198
8-1994) also provide information about solar EUV variability during solar c
ycle 22. (C) 2000 Elsevier Science Ltd. All rights reserved.