Tropospheric δD profile measurements by ground-based FTIR

Water participates in many processes that are crucial for the Earth’s climate. By distribution of heat (vertically and horizontally), regulating surface temperature, formation of clouds, radiative forcing due to water vapour, etc., it widely determines the energy budget and thus the climate of our planet. The isotopologue ratios of water (e.g. HD16O/H216O) are a powerful tool for investigating the different water cycle processes. In the following we express H216O and HD16O as H2O and HDO, respectively, and HD16O/H216O as δD = 1000‰ • {([HD16O]/[H216O]) / SMOW} -1, where SMOW=3.1152 • 10-4 (SMOW: Standard Mean Ocean Water).

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Short title: 
News from the FT-IR Working Group
Image: 
Teide Observatorium von Izaña, links das Meteorologische Institut, by Wladyslaw Benutzer Diskussion:Wladyslaw Sojka[Disk.]]] at Wikimedia Commons.
Source: 
IRWG
Audience: 
ACOM IRWG

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ACOM | Atmospheric Chemistry Observations & Modeling