文档介绍：Spectral signatures of climate change in the Earth’s infrared
spectrum between 1970 and 2006
Claudine Chen 1, John Harries 1, Helen Brindley 1, Mark Ringer 2
1 Department of Physics, Imperial College London
2 Hadley Centre, UK Met Office
Abstract
Previously published work using satellite observations of the clear sky infrared emitted radiation by the
Earth in 1970, 1997 and in 2003 showed the appearance of changes in the outgoing spectrum, which
agreed with those expected from known changes in the concentrations of well-mixed greenhouse
gases over this period. Thus, the greenhouse forcing of the Earth has been observed to change in
response to these concentration changes. In the present work, this analysis is being extended to 2006
using the TES instrument on the AURA spacecraft. Additionally, simulated spectra have been
calculated using LBLRTM with inputs from the HadGEM1 coupled model pared to the
observed satellite spectra.
INTRODUCTION
This paper extends the previous work done by this group [Griggs and Harries, 2007; Harries, et al.,
2001] to include data from 2006 from the Tropospheric Emission Spectrometer (TES) on the AURA
satellite. Prior studies pared data from 1970 (with the Infrared Interferometer Spectrometer,
IRIS) to 1997 (with the Interferometric Monitor of Greenhouse gases, IMG) and 2003 (with the
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