Spectroscopy for the Atmospheric Chemistry Experiment (ACE). Chris Boone, Kaley Walker, and Peter Bernath HITRAN Meeting June, 2010. Atmospheric Chemistry Experiment. Satellite mission for remote sensing of the Earth’s atmosphere, with a primary focus on Arctic ozone
Spectroscopy for the Atmospheric Chemistry Experiment (ACE)
Chris Boone, Kaley Walker, and Peter Bernath
Analytical expressions derived for L(x,y) using the Humlicek algorithm. A paper describing these expressions is about to be submitted to JQSRT.
For these lines, speed-dependence appears to be a stronger effect than line mixing. It is the opposite for other CH4 lines in the vicinity.
With CH4 line mixing and speed-dependent Voigt parameters in place (derived from ACE-FTS spectra), we can now retrieve acetone from the ACE-FTS.
full of missing
No CH3OH in this region in HITRAN
ACE-FTS window for CH3OH retrievals
Red curve = CH3Cl calculated with HITRAN 2008
CH3Cl excluded from calculation
Missing a lot of CH3Cl lines in HITRAN 2008. Looking at the program for this meeting, is this now fixed?
K.H. Becker et al, “Tunable diode laser measurements of CH3OOH cross-sections near 1320 cm-1”, Geophys Res Lett, 16, 1367-1370 (1989).
Is the isotopic differentiation really this large, or are there problems with the intensities of the isotopologue 4 lines?