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Proceedings Article

Comparison of spectrally resolved outgoing longwave data between 1970 and present

[+] Author Affiliations
Jennifer A. Griggs, John E. Harries

Imperial College London (United Kingdom)

Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, 164 (November 4, 2004); doi:10.1117/12.556803
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From Conference Volume 5543

  • Infrared Spaceborne Remote Sensing XII
  • Marija Strojnik
  • Denver, CO | August 02, 2004

abstract

Measurements of spectrally resolved outgoing longwave radiation allows signatures of many aspects of greenhouse warming to be distinguished without the need to amalgamate information from multiple measurements, allowing direct interpretation of the error characteristics. Here, data from three instruments measuring the spectrally resolved outgoing longwave radiation from satellites orbiting in 1970, 1997 and 2003 are compared. The data are calibrated to remove the effects of differing resolutions and fields of view so that a direct comparison can be made. Comparisons are made of the average spectrum of clear sky outgoing longwave radiation over the oceans in the months of April, May and June. Difference spectra are compared to simulations created using the known changes in greenhouse gases such as CH4, CO2 and O3 over the time period. This provides direct evidence for significant changes in the greenhouse gases over the last 34 years, consistent with concerns over the changes in radiative forcing of the climate.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jennifer A. Griggs and John E. Harries
"Comparison of spectrally resolved outgoing longwave data between 1970 and present", Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, 164 (November 4, 2004); doi:10.1117/12.556803; http://dx.doi.org/10.1117/12.556803


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