This document contains the required inputs and outputs of the AIRS IR and VIS/NIR Level 1B processing software, algorithms for converting AIRS IR digital values to calibrated radiances, and QA algorithms and indicators.
Experience with on-orbit AIRS data prompted the AIRS Calibration Team to alter some AIRS L1B algorithms (e.g. AutomaticQAFlag, DC Restore, pop detection, Moon-in-view, offset, noise estimation and gain). A brief AIRS Design File Memo describing these changes are available.
Please note that the clear FOV detection algorithms are currently under development. There are several different clear detection algorithms being refined. They employ different algorithms depending upon their spatial resolution and spectral regime. Definitions of many of the clear flags and the thresholds that control them may be found in this document.