Abstract The cavity pyrheliometer sensor aboard Nimbus 7 is now in its tenth year of operation. Results for 9 years show a decreasing trend through the end of solar cycle 21 of approximately −0.015% per year, a levelling off near solar minimum and an increasing irradiance for the beginning of cycle 22. Through April 1988 the irradiance has increased about 0.06% above the minimum value which was about 0.08% below the highest values obtained near solar maximum. The rise appears more rapid than the decline.
Observation of total irradiance variability from Nimbus satellites
Advances in Space Research ; 8 , 7 ; 5-10
01.01.1989
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch