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Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground

Journal Article


Abstract


  • The hydrological cycle and its response to environmental variability such as temperature changes is of prime importance for climate reconstruction and prediction. We retrieved deuterated water/water (HDO/H2O) abundances using spaceborne absorption spectroscopy, providing an almost global perspective on the near-surface distribution of water vapor isotopologs. We observed an unexpectedly high HDO/H2O seasonality in the inner Sahel region, pointing to a strong isotopic depletion in the subsiding branch of the Hadley circulation and its misrepresentation in general circulation models. An extension of the analysis at high latitudes using ground-based observations of (delta D) over bar and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.

UOW Authors


  •   Frankenberg, Christian (external author)
  •   Yoshimura, Kei (external author)
  •   Warneke, Thorsten (external author)
  •   Aben, Ilse (external author)
  •   Butz, Andre (external author)
  •   Deutscher, Nicholas
  •   Griffith, David
  •   Hase, Frank (external author)
  •   Notholt, Justus (external author)
  •   Schneider, Matthias (external author)
  •   Schrijver, H (external author)
  •   Rockmann, Thomas (external author)

Publication Date


  • 2009

Citation


  • Frankenberg, C., Yoshimura, K., Warneke, T., Aben, I., Butz, A., Deutscher, N. M., Griffith, D. W., Hase, F., Notholt, J., Schneider, M., Schrijver, H. & Rockmann, T. (2009). Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground. Science, 325 (5946), 1374-1377.

Scopus Eid


  • 2-s2.0-70249113347

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4056

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 1374

End Page


  • 1377

Volume


  • 325

Issue


  • 5946

Abstract


  • The hydrological cycle and its response to environmental variability such as temperature changes is of prime importance for climate reconstruction and prediction. We retrieved deuterated water/water (HDO/H2O) abundances using spaceborne absorption spectroscopy, providing an almost global perspective on the near-surface distribution of water vapor isotopologs. We observed an unexpectedly high HDO/H2O seasonality in the inner Sahel region, pointing to a strong isotopic depletion in the subsiding branch of the Hadley circulation and its misrepresentation in general circulation models. An extension of the analysis at high latitudes using ground-based observations of (delta D) over bar and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.

UOW Authors


  •   Frankenberg, Christian (external author)
  •   Yoshimura, Kei (external author)
  •   Warneke, Thorsten (external author)
  •   Aben, Ilse (external author)
  •   Butz, Andre (external author)
  •   Deutscher, Nicholas
  •   Griffith, David
  •   Hase, Frank (external author)
  •   Notholt, Justus (external author)
  •   Schneider, Matthias (external author)
  •   Schrijver, H (external author)
  •   Rockmann, Thomas (external author)

Publication Date


  • 2009

Citation


  • Frankenberg, C., Yoshimura, K., Warneke, T., Aben, I., Butz, A., Deutscher, N. M., Griffith, D. W., Hase, F., Notholt, J., Schneider, M., Schrijver, H. & Rockmann, T. (2009). Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground. Science, 325 (5946), 1374-1377.

Scopus Eid


  • 2-s2.0-70249113347

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4056

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 1374

End Page


  • 1377

Volume


  • 325

Issue


  • 5946