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| Titel |
Global variations of water vapor isotopologues derived from ACE-FTS satellite data |
| VerfasserIn |
William Randel, Mijeong Park, Elizabeth Moyer, Eric Jensen, Peter Bernath, Kaley Walker, Chris Boone |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250037625
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| Zusammenfassung |
| Water vapor isotopologues provide a sensitive measure of transport and deep convective influences on water vapor in the UTLS. We use satellite observations from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) to document the global behavior of isotopologues of H2O, including HDO and H2O(18). The ACE-FTS data reveal a minimum in (HDO/H2O) within the tropical tropopause layer, and systematic increases above the tropopause linked to methane oxidation, stratospheric transport and (possibly) overshooting convection. There is a relatively small seasonal cycle of (HDO/H2O) near the tropical tropopause. Climatological latitude-longitude structure is also analyzed, revealing localized regions of enhanced (HDO/H2O) in the UTLS, including continental monsoon regions. |
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