Impact of atmospheric state uncertainties on retrieved XCO2 columns from laser differential absorption spectrometer measurements and the effect of O2-derived surface pressure on XCO2 retrieval accuracy

T Scott Zaccheo1, Timothy Pernini2, Rick Pernak1 and Edward V Browell3, (1)Atmospheric and Environmental Research, Lexington, MA, United States, (2)Atmospheric and Environmental Research, Inc., Lexington, MA, United States, (3)NASA Langley Research Center, Hampton, VA, United States