Benchmarking Climate Model Top-of-Atmosphere Radiance in the 9.6 Micron Ozone Band Compared to TES and IASI Observations

Abstract : Tropospheric ozone has the third highest radiative forcing (RF) for anthropogenic greenhouse gases since pre-industrial times, but high uncertainties and a large spread in model values remain in the IPCC AR5. These uncertainties, along with studies using climate models and observations of tropospheric ozone and the sensitivity of TOA (top of atmosphere) flux to the vertical distribution of ozone from the Aura-TES instrument, provide motivation to benchmark the model-to-satellite differences in TOA ozone band flux and flux sensitivity. The TOA flux for the 9.6 micron ozone band is a fundamental quantity which is predicted by IPCC chemistry-climate models but has never been tested directly against satellite measurements. The continuation of the TES record of infrared ozone spectra with long-term IASI data will allow accurate predictions of future ozone forcing and an assessment of the feedback from changes in the hydrological cycle on ozone RF.
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Submitted on : Thursday, February 5, 2015 - 11:17:51 AM
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  • HAL Id : hal-01113374, version 1

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Helen Worden, Kevin W. Bowman, Andrew Conley, J.-F. Lamarque, Drew Shindell, et al.. Benchmarking Climate Model Top-of-Atmosphere Radiance in the 9.6 Micron Ozone Band Compared to TES and IASI Observations. AGU Fall Meeting 2014, Dec 2014, San Francisco, United States. pp.A43H-3385, 2014. ⟨hal-01113374⟩

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