Has the Sun's Total Output at Minimum and Maximum Changed Over the Last 24 Years ?

Details Has the Sun's Total Output at Minimum and Maximum Changed Over the Last 24 Years ? Has the Sun's Total Output at Minimum and Maximum Changed Over the Last 24 Years ?

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh21b..02w&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH21B-02

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1650 Solar Variability, 7536 Solar Activity Cycle (2162), 7537 Solar And Stellar Variability, 7538 Solar Irradiance

Scientific paper

During the last twenty-four years, Total Solar Irradiance (TSI) has been measured by the Nimbus 7/ERB, SMM/ACRIMI, ERBS/ERBE, UARS/ACRIMII, SOHO/VIRGO, and ACRIMSAT/ACRIMIII instruments. These measurements allow construction of a composite TSI record covering more than two solar cycles. This is the first record capable of revealing secular change in the Sun's total radiative output in the epoch from 1978 to 2002. Other space and ground-based observations such as the CaII K index, MgII core/wing index, 10.7 cm radio flux, and indices for sunspot deficit and facular excess allow verification and modeling of the composite TSI record. We review the TSI and irradiance measurements with emphasis on our ability to detect trends in the radiative output at both solar minimum and maximum over the last 24 years. Progress (or lack thereof) in reconstructing the TSI record from spectral irradiance and solar activity indices will be discussed. The accuracy of the current TSI records does not allow detection of secular change in amplitude of the 11-yr Schwabe cycle or the base level at time of solar minimum

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