Observed solar near UV variability: A contribution to variations of the solar constant
Abstract
Continuous Measurements of the Solar UV have been made by an instrument on the Solar Mesosphere Explorer (SME) since October 1981. The results for the wavelength interval 200 to 300 nm show an irradiance decrease to a minimum in early 1987 and a subsequent increase to mid-April 1989. The observed UV changes during part of solar cycles 21 to 22 represent approx. 35 percent (during the decreasing phase) and 25 percent (during the increasing phase) of the observed variations of the solar constant for the same time period as the SME measurements.
- Publication:
-
Middle Atmosphere Program. Handbook for MAP, volume 29
- Pub Date:
- September 1989
- Bibcode:
- 1989maph...29....9L
- Keywords:
-
- Irradiance;
- Solar Constant;
- Solar Cycles;
- Solar Flux;
- Solar Terrestrial Interactions;
- Ultraviolet Radiation;
- Climate Change;
- Radiation Distribution;
- Solar Activity;
- Solar Mesosphere Explorer;
- Solar Spectra;
- Solar Physics