Forward Modelled Photometric Calibration of DES Imaging Data

The scientific goals of modern OIR broad-band sky surveys such as DES and LSST require precise definition and calibration of photometric measurements of the flux of photons emitted by celestial sources.  In many cases, precision and interpretation of measurements need to be done with residual uncertainties of 0.5% to avoid degradation of scientific results.  Traditional methods of calibration of nightly data are not ideally suited to, nor take advantage of, the redundancy and cadence of survey campaigns.  This presentation will seek to introduce calibration definitions and methods that are being developed to address DES and LSST science. Results from targeted research studies of these techniques and first results from applications to DES data will be discussed.