A global database of water vapor isotopes measured with high temporal resolution infrared laser spectroscopy

Zhongwang Wei , Xuhui Lee , Franziska Aemisegger (1) , Marion Benetti (2) , Max B. Berkelhammer , Mathieu Casado , Kelly Caylor , Emanuel Christner , Christoph Dyroff , Omaira Garcìa (3) , Yenny González , Timothy Griffis , Naoyuki Kurita (4) , Jie Liang (5) , Mao-Chang Liang (6) , Guanghui Lin , David Noone (7) , Konstantin Gribanov (8) , Niels C. Munksgaard , Matthias Schneider (9) , François Ritter (10) , Hans Christian Steen-Larsen (11) , Christine Vallet-Coulomb (12) , Xuefa Wen , Jonathon S. Wright , Wei Xiao (13) , Kei Yoshimura

1 IAC - Institute for Atmospheric and Climate Science [Zürich]
2 Institute of Earth Sciences [Reykjavik]
3 IARC - Izaña Atmospheric Research Center
4 Graduate School of Environmental Studies [Nagoya]
5 SmartIES - Smart Integrated Electronic Systems
6 Research Center for Environmental Changes [Taipei]
7 CEOAS - College of Earth, Ocean and Atmospheric Sciences [Corvallis]
8 Climate and Environmental Physics Laboratory [Russia]
9 IMK-ASF - Institut für Meteorologie und Klimaforschung - Atmosphärische Spurengase und Fernerkundung
10 Penn State - Pennsylvania State University
11 Centre for Ice and Climate [Copenhagen]
12 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
13 WZVTC - Wenzhou Vocational and Technical College

The isotopic composition of water vapour provides integrated perspectives on the hydrological histories of air masses and has been widely used for tracing physical processes in hydrological and climatic studies. Over the last two decades, the infrared laser spectroscopy technique has been used to measure the isotopic composition of water vapour near the Earth's surface. Here, we have assembled a global database of high temporal resolution stable water vapour isotope ratios (δ 18 O and δD) observed using this measurement technique. As of March 2018, the database includes data collected at 35 sites in 15 Köppen climate zones from the years 2004 to 2017. The key variables in each dataset are hourly values of δ 18 O and δD in atmospheric water vapour. To support interpretation of the isotopologue data, synchronized time series of standard meteorological variables from in situ observations and ERA5 reanalyses are also provided.

Domaines: Interfaces continentales, environnement; Océan, Atmosphère; Géochimie; Hydrologie; Climatologie

Zhongwang Wei, Xuhui Lee, Franziska Aemisegger, Marion Benetti, Max B. Berkelhammer, et al.. A global database of water vapor isotopes measured with high temporal resolution infrared laser spectroscopy. Scientific Data , 2019, 6, pp.180302. ⟨10.1038/sdata.2018.302⟩. ⟨hal-02009630⟩