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Proceedings Paper

Development of special corrective processing of HIRDLS data and early validation
Author(s): John Gille; Thomas Eden; Gene Francis; Alyn Lambert; Bruno Nardi; John Barnett; Charles Cavanaugh; Hyunah Lee; Cheryl Craig; Vincil Dean; Christopher Halvorson; Charles Krinsky; Joseph McInerney; Brent Petersen
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Paper 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.

Paper Details

Date Published: 13 September 2005
PDF: 11 pages
Proc. SPIE 5883, Infrared Spaceborne Remote Sensing 2005, 58830H (13 September 2005); doi: 10.1117/12.622590
Show Author Affiliations
John Gille, Univ. of Colorado at Boulder (United States)
National Ctr. for Atmospheric Research (United States)
Thomas Eden, National Ctr. for Atmospheric Research (United States)
Gene Francis, National Ctr. for Atmospheric Research (United States)
Alyn Lambert, National Ctr. for Atmospheric Research (United States)
Jet Propulsion Lab. (United States)
Bruno Nardi, National Ctr. for Atmospheric Research (United States)
John Barnett, Univ. of Oxford (United Kingdom)
Charles Cavanaugh, National Ctr. for Atmospheric Research (United States)
Hyunah Lee, National Ctr. for Atmospheric Research (United States)
Cheryl Craig, National Ctr. for Atmospheric Research (United States)
Vincil Dean, Univ. of Colorado at Boulder (United States)
Christopher Halvorson, National Ctr. for Atmospheric Research (United States)
Charles Krinsky, Univ. of Colorado at Boulder (United States)
Joseph McInerney, Univ. of Colorado at Boulder (United States)
Brent Petersen, Univ. of Colorado at Boulder (United States)


Published in SPIE Proceedings Vol. 5883:
Infrared Spaceborne Remote Sensing 2005
Marija Strojnik, Editor(s)

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