The SunRISE solar synthesis model

We present a spectral synthesis approach to making quantitative estimates of UV and EUV spectral variability. We combine the identification of solar surface structures from the analysis of images from the PSPT and spectromagnetograms from NSO/KP, with the theory for emission, absorption, and transfer of radiation in the solar atmosphere. We will present the latest results from the spectral synthesis model and compare them to related observations and comment on their accuracy and applicability to use in terrestrial atmoshpere studies. NCAR is sponsored by the National Science Foundation. This work is partly sponsored by the NSF RISE program.