Speaker
Description
Outgoing longwave radiation in the far-infrared (FIR) spectral region is responsible for over half of the Earth’s emissions to space, with CO2 and H2O being the two principal absorbers. The upcoming ESA FORUM mission will be the first to measure in the FIR at high spectral resolution. The interpretation of the FORUM measurements is reliant on our ability to perform accurate radiative transfer calculations in the FIR. The aim of this work is to improve the accuracy of the available spectroscopic linelists required for the FORUM mission.
We report here our first measurements of high resolution (0.00096 cm-1) spectra of pure CO2 in the FIR region, taken using synchrotron radiation at the Canadian Light Source. We derive preliminary intensities and line positions. We also report preliminary results of line positions and intensities for H2O in the FIR using spectra recorded previously at SOLEIL in France.
