Solar ultraviolet variation between 1977 and 1983
Abstract
A fifth measurement of the solar ultraviolet irradiance at 40 km in the stratosphere has been added to four earlier ones. It confirms the previously published conclusion that photospheric solar irradiance in the range 2350-2870 Å has been essentially constant during the current solar activity cycle. Chromospheric emissions seen in the Mgii line cores increased during rising activity and decreased again as the activity declined.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- August 1984
- DOI:
- 10.1029/JD089iD05p07322
- Bibcode:
- 1984JGR....89.7322H
- Keywords:
-
- Irradiance;
- Solar Flux;
- Ultraviolet Radiation;
- Balloon Flight;
- Chromosphere;
- Line Spectra