A43E-0337
Atmospheric pseudo-retrievals for averaging kernel and total uncertainty characterization for ACE-FTS level 2 (PRAKTICAL) data
Thursday, 17 December 2015
Poster Hall (Moscone South)
Patrick Sheese, University of Toronto, Toronto, ON, Canada, Kaley A Walker, University of Toronto, Department of Physics, Toronto, ON, Canada and Chris D. Boone, University of Waterloo, Waterloo, ON, Canada
Abstract:
For over the past decade, the ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer) instrument on the Canadian SciSat satellite has been observing the Earth’s limb via solar occultation in the 750-4400 cm-1 spectral region with 0.02 cm-1 spectral resolution. The most recent version of the level 2 data, version 3.5, which starts in February of 2004 and is currently ongoing, is comprised of volume mixing ratio profiles of over 30 atmospheric trace species and over 20 subsidiary isotopologues. This study will use ACE-FTS level 1 spectra and the version 3.5 forward model in pseudo-retrievals that use a 2-dimensional Levenberg-Marquardt optimal estimation technique in order to produce representative ACE-FTS averaging kernels and to characterize the systematic and random uncertainties inherent in the level 2 profiles. Preliminary results will be presented and discussed. The ACE-FTS uncertainties will be compared to the reported uncertainties of data sets from other current and past atmospheric limb sounders.
