The SSHR Solar Reference Spectrum

Abstract

International audienceThe determination of many high-resolution solar reference spectra at high accuracy is crucial and represents a fundamental input for solar physics (Sun modeling), terrestrial atmospheric photochemistry and Earth's climate (climate's modeling). Thus, we present a new solar irradiance reference spectrum at high resolution representative of a solar minimum. The SOLAR Spectrum at High Resolution (SSHR) is developed by normalizing high spectral resolution solar line data to the absolute irradiance scale of the SOLAR-ISS reference spectrum. The resulting disk-integrated solar spectrum has at least 0.01 nm spectral resolution and spans 300-4400 nm. Below 1000 nm, the spectral resolution is less than 0.001 nm. One of our motivations is to develop a new radiometrically well calibrated solar spectrum with high spectral resolution for disk-integrated, but also for the first time for disk-center or intermediate cases. These spectra must meet the needs of the MicroCarb mission and the 4AOP radiative transfer software