CALIFORNIA INSTITUTE OF TECHNOLOGY
Contract: $2,146,927 - National Aeronautics and Space Administration - Sep. 10, 2009
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Award Description: The Atmospheric Infrared Sounder (AIRS) is an instrument on the Earth Obesrving System Aqua spacecraft. AIRS and the Advanced Microwave Sounding Unit (AMSU) form the AIRS Sounding System. This system is designed to meet climate research needs and operational weather prediction requirements. The AIRS Project is in the operation phase. It involves weather and climate science software development and alogrithm maintenance, instrument operations, trending and calibration. AIRS will deliver software, data analysis and instrument control monitoring. The significant deliverables are development of Version 6 (V6) software upgrade and instrument monitoring and user support activities.
Project Description: 1) Wrap Up V6 (ST ALG Input Ends) Level 1B - Completed A new set of radiometric calibration coefficients was developed by a reanalysis of prelaunch data. Results from the new coefficients were compared, channel by channel, to results using the old coefficients and the improvements were characterized. 2) Wrap Up V6 (ST ALG Input Ends) Level 1C - Completed a) A formula was developed to convert radiances calculated using the old Version 5 calibration coefficients to radiances calculated using the new Version 6 coefficients without starting from the raw detector counts b) The reverse formula was also developed - it converts radiances calculated using the new Version 6 calibration coefficients to radiances calculated using the old Version 5 coefficients c) The existing Level 1B algorithm to determine spectral shifts from upwelling radiances has been greatly improved d) Spectral shifts have been determined using historical data e) A method to estimate spectral shifts using gain rations was developed f) An alogrithm to combine the three methods of determining spectral shifts into a single best-estimate algorithm has been developed g) An improved NeN (noise) estimation procedure has been developed h) The algorithm to fill gaps in Level 1B spectra and then replace outliers using similar channels has been completed i) The algorithm to resample Level 1B spectra onto a fixed frequency is ready
Jobs Summary: Administration, Engineering, Software Engineering, Project Management (Total jobs reported: 3)
Project Status: Less Than 50% Completed
This award's data was last updated on Sep. 10, 2009. Help expand these official descriptions using the wiki below.
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