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Dynamic Processes Governing Lower-Tropospheric HDO/H_2O Ratios as Observed from Space and Ground

Frankenberg, Christian and Yoshimura, Kei and Warneke, Thorsten and Aben, Ilse and Butz, André and Deutscher, Nicholas and Griffith, David and Hase, Frank and Notholt, Justus and Schneider, Matthias and Schrijver, Hans and Röckmann, Thomas (2009) Dynamic Processes Governing Lower-Tropospheric HDO/H_2O Ratios as Observed from Space and Ground. Science, 325 (5946). pp. 1374-1377. ISSN 0036-8075. https://resolver.caltech.edu/CaltechAUTHORS:20150508-102404837

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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/H_2O) 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/H_2O 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.


Item Type:Article
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http://www.sciencemag.org/content/325/5946/1374.fullPublisherArticle
http://www.sciencemag.org/content/325/5946/1374/suppl/DC1PublisherSupporting Information
ORCID:
AuthorORCID
Frankenberg, Christian0000-0002-0546-5857
Additional Information:© 2009 American Association for the Advancement of Science. Received 19 March 2009; accepted 22 July 2009. We thank all the scientists and engineers involved in the ESA’s ENVISAT/SCIAMACHY mission, especially J. P. Burrows and H. Bovensmann from the University of Bremen, and, apart from the ESA, the national space agencies of Germany [German Aerospace Center (DLR)], Netherlands [Netherlands Space Office (NSO)], and Belgium [Belgian User Support and Operations Center (BUSOC)]. The ground-based FTS activities at Kiruna and Izaña were supported by the Deutsche Forschungsgemeinschaft through project RISOTO. We are grateful to the Alfred Wegener Institute for providing the FTIR instrument and logistical support in Ny Ålesund. Financial support from the European Union project GEOMON for the FTS stations is acknowledged. We thank H. Sodemann for a valuable discussion on an earlier manuscript draft; R. Snel, R. van Hees, and P. van der Meer for their work on instrument calibration; and A. de Lange and P. Tol for proofreading and image creation, respectively. C.F. was supported by a VENI fellowship from the Dutch science foundation NWO.
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Funding AgencyGrant Number
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
European Union Project GEOMONUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Issue or Number:5946
Record Number:CaltechAUTHORS:20150508-102404837
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150508-102404837
Official Citation:Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground Christian Frankenberg, Kei Yoshimura, Thorsten Warneke, Ilse Aben, André Butz, Nicholas Deutscher, David Griffith, Frank Hase, Justus Notholt, Matthias Schneider, Hans Schrijver, and Thomas Röckmann Science 11 September 2009: 325 (5946), 1374-1377. [DOI:10.1126/science.1173791]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57375
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 May 2015 19:32
Last Modified:03 Oct 2019 08:24

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