HR: 0800h
AN: A21B-0737    [Abstracts]
TI: Water and Methane in the Upper Troposphere and Stratosphere Based on ACE-FTS Measurements
AU: * Nassar, R
EM: ray@acebox.uwaterloo.ca
AF: Department of Chemistry, University of Waterloo, 200 University Ave. West, Waterloo, ON N2L 3G1 Canada
AU: Boone, C
EM: cboone@acebox.uwaterloo.ca
AF: Department of Chemistry, University of Waterloo, 200 University Ave. West, Waterloo, ON N2L 3G1 Canada
AU: Walker, K A
EM: kwalker@acebox.uwaterloo.ca
AF: Department of Chemistry, University of Waterloo, 200 University Ave. West, Waterloo, ON N2L 3G1 Canada
AU: Bernath, P F
EM: bernath@uwaterloo.ca
AF: Department of Chemistry, University of Waterloo, 200 University Ave. West, Waterloo, ON N2L 3G1 Canada
AB: The SCISAT-1 mission, also known as the Atmospheric Chemistry Experiment (ACE), is a Canadian satellite mission to investigate the chemical and dynamical processes that control the distribution of ozone in the stratosphere and upper troposphere. The primary instrument on SCISAT-1 is the ACE-FTS, a high resolution Fourier transform spectrometer operating in the 750-4500 cm$^{-1}$ range. ACE-FTS occultation spectra dating back to January 2004 have now been processed to produce a suite of data products including temperature and pressure profiles from the mid-troposphere to the mesopause, as well as VMR profiles of H$_{2}$O, N$_{2}$O, CO, NO, HCl, HF, HNO$_{3}$, CH$_{4}$, O$_{3}$, NO$_{2}$, HDO, SF$_{6}$, COF$_{2}$, N$_{2}$O$_{5}$, ClONO$_{2}$, CCl$_{3}$F, CCl$_{2}$F$_{2}$ and CHF$_{2}$Cl with other VMR profiles to come in the near future. Recently, there has been some debate within the atmospheric community regarding increases in upper tropospheric and stratospheric water vapor that have been observed over the last 50 years. Understanding trends in atmospheric water vapor are necessary for our understanding of both stratospheric ozone depletion and global climate change. This paper will report on the ACE-FTS H$_{2}$O, HDO and CH$_{4}$ measurements and discuss their relationship to trends and measurements by other instruments such as ATMOS, HALOE and POAM III.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting