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

Christian Frankenberg; Kei Yoshimura; Thorsten Warneke; Ilse Aben; Andre Butz; Nicholas Deutscher; David Griffith; Frank Hase; Justus Notholt; Matthias Schneider; Hans Schrijver; Thomas Rockmann

doi:10.1126/science.1173791

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

Christian Frankenberg, Kei Yoshimura, Thorsten Warneke, Ilse Aben, Andre Butz, Nicholas Deutscher, David Griffith, Frank Hase, Justus Notholt, Matthias Schneider, Hans Schrijver, Thomas Rockmann

Research output: Contribution to Journal › Article › Academic › peer-review

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 ¯ ¯ ¯ ¯
δD¯
and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.

Original language	English
Pages (from-to)	1374-1377
Journal	Science
Volume	325
Issue number	5946
DOIs	https://doi.org/10.1126/science.1173791
Publication status	Published - 11 Sept 2009

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

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 ¯ ¯ ¯ ¯ δD¯ and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.",

author = "Christian Frankenberg and Kei Yoshimura and Thorsten Warneke and Ilse Aben and Andre Butz and Nicholas Deutscher and David Griffith and Frank Hase and Justus Notholt and Matthias Schneider and Hans Schrijver and Thomas Rockmann",

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doi = "10.1126/science.1173791",

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TY - JOUR

T1 - Dynamic Processes Governing Lower-Tropospheric HDO/H2O Ratios as Observed from Space and Ground

AU - Frankenberg, Christian

AU - Yoshimura, Kei

AU - Warneke, Thorsten

AU - Aben, Ilse

AU - Butz, Andre

AU - Deutscher, Nicholas

AU - Griffith, David

AU - Hase, Frank

AU - Notholt, Justus

AU - Schneider, Matthias

AU - Schrijver, Hans

AU - Rockmann, Thomas

PY - 2009/9/11

Y1 - 2009/9/11

N2 - 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 ¯ ¯ ¯ ¯ δD¯ and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.

AB - 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 ¯ ¯ ¯ ¯ δD¯ and a model study shows that dynamic processes can entirely compensate for temperature effects on the isotopic composition of precipitation.

U2 - 10.1126/science.1173791

DO - 10.1126/science.1173791

M3 - Article

SN - 0036-8075

VL - 325

SP - 1374

EP - 1377

JO - Science

JF - Science

IS - 5946

ER -

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

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