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Technical note. Water vapour correction of the daily 1 km AVHRR global land dataset: part I validation and use of the Water Vapour input field

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An atmospheric correction algorithm developed for the 1 km Advanced Very High Resolution Radiometer (AVHRR) global land dataset was modified to include a near real-time total column water vapour data input field to account for the natural variability of atmospheric water vapour. The real-time data input field used for this study is the Television and Infrared Observational Satellite (TIROS) Operational Vertical Sounder (TOVS) Pathfinder A global total column water vapour dataset. It was validated prior to its use in the AVHRR atmospheric correction process using two North American AVHRR scenes, namely 13 June and 28 November 1996. The validation results are consistent with those reported by others and entail a comparison between TOVS, radiosonde, experimental sounding, microwave radiometer, and data from a hand-held sunphotometer. The use of this data layer as input to the AVHRR atmospheric correction process is discussed.

Document Type: Research Article


Affiliations: 1: Science Department, RAYTHEON, ITSS, EROS Data Center, Sioux Falls, South Dakota, 57198, USA 2: Software Engineering Department, RAYTHEON, ITSS, EROS Data Center, Sioux Falls, South Dakota, 57198, USA 3: SAIC/GSC (General Sciences Corporation), GSFC, NASA, Greenbelt, MD, USA

Publication date: 2003-06-01

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