NSSDCA ID: ESRB-00001
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1978-11-16 to 1993-12-13
This set of solar irradiance was supplied by the experimenter on a 5 1/4-in floppy disk in ASCII format for an IBM-PC. The daily averaged total solar irradiances were derived from measurements made by channel 10C (i.e., the cavity sensor) of the Nimbus-7 Earth Radiation Budget (ERB) instrument. The data comprise a subset of the recalculated ERB Solar Analysis Tape (ESAT), with the deletion or insertion of small numbers of orbits. For the period February 1980 to March 1986, the data correlate well with the Active Cavity Radiometer (ACRIM) solar irradiance measurements on the Solar Maximum Mission (SMM): 68 % of the variance of the daily averages are in common. In 1991, a new algorithm for the derivation of the solar irradiance based on the removal of certain instrument uncertainties was introduced. The dataset was replaced in May of 1991 with the new version. Updates to the data are expected as long as the instrument remains operational. See Hoyt, D.V., et al, "The Nimbus 7 Solar Total Irradiance: A New Algorithm for Its Derivation", J. Geophys. Res., Vol. 97, No. A1, pp. 51-63, January 1, 1992.
This data set was transferred to the Langley DAAC in September 1996, but one copy is retained for use by NSSDC staff and the solar science community.
Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Herbert Lee Kyle | Data Provider | NASA Goddard Space Flight Center | lkyle@ame.gsfc.nasa.gov |