Stable isotopic composition of water vapor in the tropics

Water vapor samples collected during tropical field experiments at Puerto Escondido, Mexico, near Kwajalein (KWAJEX), and near Key West, Florida (CAMEX 4), were analyzed for their stable isotope contents, 1H218O:1H216O and 2H1H16O:1H216O. Highest δ18O values approached isotopic equilibrium with seaw...

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Veröffentlicht in:	Journal of Geophysical Research. D. Atmospheres 2004-03, Vol.109 (D6), p.D06115.1-n/a
Hauptverfasser:	Lawrence, James Robert, Gedzelman, Stanley David, Dexheimer, Darielle, Cho, Hye-Khung, Carrie, Gordon D., Gasparini, Robert, Anderson, Casey R., Bowman, Kenneth P., Biggerstaff, Mike I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth, ocean, space Exact sciences and technology isotopes tropics water vapor
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Beschreibung
Zusammenfassung:	Water vapor samples collected during tropical field experiments at Puerto Escondido, Mexico, near Kwajalein (KWAJEX), and near Key West, Florida (CAMEX 4), were analyzed for their stable isotope contents, 1H218O:1H216O and 2H1H16O:1H216O. Highest δ18O values approached isotopic equilibrium with seawater during quiescent weather or in regions of isolated or disorganized convection. Lowest δ18O values occurred in or downwind from regions of organized mesoscale weather disturbances and ranged as low as 15‰ below isotopic equilibrium with seawater. The mean δ18O value of vapor over the sea surface therefore decreases as storm activity and organization increases.
ISSN:	0148-0227 2156-2202
DOI:	10.1029/2003JD004046