Solar Irradiance Nowcasting Case Studies near Sacramento

Solar irradiance

The UV-A and visible solar irradiance spectrum: inter-comparison of absolutely calibrated, spectrally medium resolution solar irradiance spectra from balloonand satellite-borne measurements W. Gurlit, H. Bösch , H. Bovensmann, J. P. Burrows, A. Butz, C. Camy-Peyret, M. Dorf, K. Gerilowski, A. Lindner, S. Noël, U. Platt, F. Weidner, and K. Pfeilsticker Institut für Umweltphysik und Fernerkundung...

An assessment of the solar irradiance record for climate studies

Total solar irradiance, the spatially and spectrally integrated radiant output from the Sun at a mean Sun-Earth distance of 1 astronomical unit, provides nearly all the energy driving the Earth’s climate system. Variations in this energy, particularly over long time scales, contribute to changes in Earth’s climate and have been linked to historical glaciation and inter-glacial periods as well a...

Solar Irradiance Conversion Models*

Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements

The LYRA instrument onboard ESA PROBA2 satellite will provide 6-hourly solar irradiance at the Lymanalpha (121.6 nm) and the Herzberg continuum (∼200– 220 nm wavelength range). Because the nowcasting of the neutral and ionic state of the middle atmosphere requires the solar irradiance for the wide spectral range (120–680 nm) we have developed the statistical tool for the reconstruction of the f...

Solar Irradiance since 1874 Revisited

We reconstruct the solar irradiance since 1874 employing an evolved version of previously published models and improved sunspot and facular data. A good correlation between reconstructed irradiance and Earth’s global air temperature on time scales longer than the solar cycle is obtained and, in contrast to many earlier models, solar irradiance does not on average lag behind global temperature p...