Year: 2000
Type: article
Abstract: Because of the dependence of the Sun's irradiance on solar activity, reductions from contemporary levels are expected during the seventeenth century Maunder Minimum. New reconstructions of spectral irradiance are developed since 1600 with absolute scales traceable to space‐based observations. The long‐term variations track the envelope of group sunspot numbers and have amplitudes consistent with the range of Ca II brightness in Sun‐like stars. Estimated increases since 1675 are 0.7%, 0.2% and 0.07% in broad ultraviolet, visible/near infrared and infrared spectral bands, with a total irradiance increase of 0.2%.
Source: Geophysical Research Letters
DOI: 10.1029/2000gl000043
Author: Judith Lean
Institution: United States Naval Research Laboratory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
SDG: Climate action
Open Access status: bronze
OpenAlex ID: W2094611979