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

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Title: Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground.
Authors: Frankenberg, Christian, Yoshimura, Kei, Warneke, Thorsten, Aben, Ilse, Butz, André, Deutscher, Nicholas, Griffith, David, Hase, Frank, Notholt, Justus, Schneider, Matthias, Schrijver, Hans, Röckmann, Thomas
Source: Science (pre-March 2025). 9/11/2009, Vol. 325 Issue 5946, p1374-1377. 4p.
Subjects: Hydrological research, Atmospheric water vapor, Precipitation variability, Research methodology, Absorbance scale (Spectroscopy), General circulation model, Photography in satellite meteorology, Mathematical models of atmospheric circulation
Geographic Terms: Sahel
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 ̅δD and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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  Data: Dynamic Processes Governing Lower-Tropospheric HDO/H<subscript>2</subscript>O Ratios as Observed from Space and Ground.
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  Data: <searchLink fieldCode="AR" term="%22Frankenberg%2C+Christian%22">Frankenberg, Christian</searchLink><br /><searchLink fieldCode="AR" term="%22Yoshimura%2C+Kei%22">Yoshimura, Kei</searchLink><br /><searchLink fieldCode="AR" term="%22Warneke%2C+Thorsten%22">Warneke, Thorsten</searchLink><br /><searchLink fieldCode="AR" term="%22Aben%2C+Ilse%22">Aben, Ilse</searchLink><br /><searchLink fieldCode="AR" term="%22Butz%2C+André%22">Butz, André</searchLink><br /><searchLink fieldCode="AR" term="%22Deutscher%2C+Nicholas%22">Deutscher, Nicholas</searchLink><br /><searchLink fieldCode="AR" term="%22Griffith%2C+David%22">Griffith, David</searchLink><br /><searchLink fieldCode="AR" term="%22Hase%2C+Frank%22">Hase, Frank</searchLink><br /><searchLink fieldCode="AR" term="%22Notholt%2C+Justus%22">Notholt, Justus</searchLink><br /><searchLink fieldCode="AR" term="%22Schneider%2C+Matthias%22">Schneider, Matthias</searchLink><br /><searchLink fieldCode="AR" term="%22Schrijver%2C+Hans%22">Schrijver, Hans</searchLink><br /><searchLink fieldCode="AR" term="%22Röckmann%2C+Thomas%22">Röckmann, Thomas</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 9/11/2009, Vol. 325 Issue 5946, p1374-1377. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Hydrological+research%22">Hydrological research</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+water+vapor%22">Atmospheric water vapor</searchLink><br /><searchLink fieldCode="DE" term="%22Precipitation+variability%22">Precipitation variability</searchLink><br /><searchLink fieldCode="DE" term="%22Research+methodology%22">Research methodology</searchLink><br /><searchLink fieldCode="DE" term="%22Absorbance+scale+%28Spectroscopy%29%22">Absorbance scale (Spectroscopy)</searchLink><br /><searchLink fieldCode="DE" term="%22General+circulation+model%22">General circulation model</searchLink><br /><searchLink fieldCode="DE" term="%22Photography+in+satellite+meteorology%22">Photography in satellite meteorology</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models+of+atmospheric+circulation%22">Mathematical models of atmospheric circulation</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Sahel%22">Sahel</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: 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 ̅δD and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1126/science.1173791
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        Text: English
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      – SubjectFull: Atmospheric water vapor
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      – SubjectFull: Precipitation variability
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      – SubjectFull: Research methodology
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      – SubjectFull: Absorbance scale (Spectroscopy)
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      – SubjectFull: Mathematical models of atmospheric circulation
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      – SubjectFull: Sahel
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              Text: 9/11/2009
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