Articles | Volume 16, issue 8
Atmos. Chem. Phys., 16, 5139–5157, 2016
https://doi.org/10.5194/acp-16-5139-2016
Atmos. Chem. Phys., 16, 5139–5157, 2016
https://doi.org/10.5194/acp-16-5139-2016

Research article 25 Apr 2016

Research article | 25 Apr 2016

Investigating the source, transport, and isotope composition of water vapor in the planetary boundary layer

Timothy J. Griffis et al.

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Short summary
Increasing atmospheric humidity and convective precipitation over land provide evidence of intensification of the hydrologic cycle. We present the first multi-annual isotope (oxygen and deuterium) water vapor observations from a very tall tower (185 m) in the upper Midwest, United States, to diagnose the sources, transport, and fractionation of water vapor in the atmosphere. The results show a relatively high degree of summertime water recycling within the region (~30 % mean and ~60 % maximum).
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