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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 15 | Copyright
Atmos. Chem. Phys., 17, 9645-9663, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 10 Aug 2017

Research article | 10 Aug 2017

Importance of the Saharan heat low in controlling the North Atlantic free tropospheric humidity budget deduced from IASI δD observations

Jean-Lionel Lacour et al.
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ED: Publish subject to technical corrections (10 Jul 2017) by Heini Wernli
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Short summary
We present temporal and spatial δD distributions derived from IASI obtained above the North Atlantic in the vicinity of West Africa. We show that the seasonality of δD in the North Atlantic is closely associated with the influence of the Saharan heat low (SHL). We provide an interpretation of the temporal and spatial variations in δD and show that the interactions between the large-scale subsidence, the ITCZ, and the SHL can be disentangled thanks to the added information contained in δD.
We present temporal and spatial δD distributions derived from IASI obtained above the North...