Share Email Print
cover

Proceedings Paper

Using AIRS and IASI data to evaluate absolute radiometric accuracy and stability for climate applications
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The creation of multi-decadal data sets for climate research requires better than 100 mK absolute calibration accuracy for the full range of spectral temperatures encountered under global conditions. Validation that this accuracy is achieved by the operational hyperspectral sounders from polar orbit is facilitated by comparing data from two instruments. Extreme radiometric calibration stability is critical to allow a long time series of noisy, but presumably long-term accurate truth measurements to be used for the validation of absolute accuracy at the 100 mK level. We use the RTGSST in the tropical oceans as ground truth. The difference between the AIRS derived sst2616 and the RTGSST based on six years of data shows a systematic cold bias of about 250 mK, but better than 4 mK/year stability. The double difference between AIRS and the RTGSST and IASI and the RTGSST with less than one year of data already allows statements at the 100 mK absolute level. It shows a 60 mK difference between the AIRS and the IASI calibration at 2616 cm-1 and 300 K, with a statistically insignificant 20 mK shift in six months.

Paper Details

Date Published: 6 September 2008
PDF: 5 pages
Proc. SPIE 7085, Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II, 708504 (6 September 2008); doi: 10.1117/12.795225
Show Author Affiliations
Hartmut H. Aumann, Jet Propulsion Lab. (United States)
Thomas S. Pagano, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7085:
Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II
Mitchell D. Goldberg; Hal J. Bloom; Philip E. Ardanuy; Allen H.-L. Huang, Editor(s)

© SPIE. Terms of Use
Back to Top