13 September 2005 Development of special corrective processing of HIRDLS data and early validation
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Abstract
The High Resolution Dynamics Limb Sounder (HIRDLS) instrument was launched on NASA's Aura spacecraft on 15 July 2004. When activation was completed 25 days later, it was discovered that the measured radiances were very different from those that were expected. After a long series of analyses and diagnostic tests, the cause was confirmed to be a blockage that covers much of the front aperture, preventing even one completely clear view of the atmosphere. In this paper the steps required to correct the radiances for the effects of the blockage are noted. These are calibrating the radiances, removing the effects of the blockage oscillating, and the radiance coming from the blockage, correcting for the effects of the partial aperture, and filtering the noise. The paper describes the algorithms needed, and presents the results of their application. The success of the procedures will be demonstrated by the quality of the resulting radiances and retrieved profiles of temperature and trace species. The difficulties that have been eliminated, and that still remain are noted, along with plans for further improvement. Finally, the scientific implications are briefly discussed.
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John Gille, John Gille, Thomas Eden, Thomas Eden, Gene Francis, Gene Francis, Alyn Lambert, Alyn Lambert, Bruno Nardi, Bruno Nardi, John Barnett, John Barnett, Charles Cavanaugh, Charles Cavanaugh, Hyunah Lee, Hyunah Lee, Cheryl Craig, Cheryl Craig, Vincil Dean, Vincil Dean, Christopher Halvorson, Christopher Halvorson, Charles Krinsky, Charles Krinsky, Joseph McInerney, Joseph McInerney, Brent Petersen, Brent Petersen, } "Development of special corrective processing of HIRDLS data and early validation", Proc. SPIE 5883, Infrared Spaceborne Remote Sensing 2005, 58830H (13 September 2005); doi: 10.1117/12.622590; https://doi.org/10.1117/12.622590
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