HR: 1340h
AN: A13C-1353    [Abstracts]
TI: Evaluation of the New HOxotope Total Water Isotopologues Instrument Performance During TC4 Through Instrument Intercomparison
AU: * O'Brien, A S
EM: obrien@huarp.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AU: Hanisco, T F
EM: hansico@huarp.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AU: St. Clair, J M
EM: jstclair@fas.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AU: Weinstock, E M
EM: weinstock@huarp.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AU: Smith, J B
EM: jsmith@huarp.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AU: Herman, R L
EM: robert.l.herman@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Troy, R F
EM: robert.f.troy@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Christensen, L E
EM: lance.e.christensen@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Davis, S M
EM: seand@colorado.edu
AF: Laboratory for Atmospheric and Space Physics, University of Colorado, 590 UCB, Boulder, CO 80309, United States
AU: Avallone, L M
EM: linnea.avallone@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, University of Colorado, 590 UCB, Boulder, CO 80309, United States
AU: Anderson, J G
EM: anderson@huarp.harvard.edu
AF: Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, United States
AB: Measurements of the relative abundance of HDO and H₂O serve as a sensitive indicator of the convective history of an airmass. We present measurements of total water isotopologues (condensed and vapor phases) from the upper troposphere and lower stratosphere that were obtained by the HOx total water isotopologues instrument (HOxotope) onboard the NASA WB-57 aircraft during the TC4 field campaign. Measurements are obtained using a new inlet to sample water particles and vapor isokinetically. The inlet is designed to provide accurate, contamination-free total water isotopologue measurements by vaporizing condensed water prior to detection. Contamination is evaluated by the time response of our system between regions of high- and low- water as determined through comparisons with established water vapor measurements, made by Harvard's Lyman-α instrument (Harvard Water) and Jet Propulsion Laboratory's laser hygrometer instrument (JLH). Instrument sensitivity and time response during particle sampling is evaluated by comparison with the University of Colorado's closed-path laser hygrometer (CLH).
DE: 0320 Cloud physics and chemistry
DE: 0322 Constituent sources and sinks
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting