Stable isotope variations of dew under three different climates

Chao Tian; Kun Du; Lixin Wang; Xiao Zhang; Fadong Li; Wenzhe Jiao; Daniel Beysens; Kudzai Farai Kaseke; Marie-Gabrielle Medici

doi:10.1038/s41597-022-01151-6

Stable isotope variations of dew under three different climates

Sci Data. 2022 Feb 14;9(1):50. doi: 10.1038/s41597-022-01151-6.

Authors

Chao Tian^{1

2

3}, Kun Du^{1

3

4

5}, Lixin Wang⁶, Xiao Zhang⁷, Fadong Li^{1

3

5}, Wenzhe Jiao², Daniel Beysens^{8

9}, Kudzai Farai Kaseke^{2

10}, Marie-Gabrielle Medici¹¹

Affiliations

¹ Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
² Department of Earth Sciences, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN, 46202, USA.
³ Shandong Yucheng Agro-ecosystem National Observation and Research Station, Ministry of Science and Technology, Yucheng, 251200, China.
⁴ School of Resources and Environment, LinYi University, Linyi, 276000, China.
⁵ College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
⁶ Department of Earth Sciences, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN, 46202, USA. lxwang@iupui.edu.
⁷ Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education. College of Environment and Planning, Henan University, Jinming Avenue, Kaifeng, 475004, China.
⁸ Physique et Mécanique des Milieux Hétérogènes, CNRS, ESPCI, PSL Research University, Sorbonne Université, Sorbonne Paris Cité, 75005, Paris, France.
⁹ OPUR, 2 rue Verderet, 75016, Paris, France.
¹⁰ Earth Research Institute, University of California, Santa Barbara, CA, 93106, USA.
¹¹ LPMC, Université de Nice, CNRS-UMR 7336, 06108, Nice Cedex 2, France.

Abstract

As a supplementary or the only water source in dry regions, dew plays a critical role in the survival of organisms. The new hydrological tracer ¹⁷O-excess, with almost sole dependence on relative humidity, provides a new way to distinguish the evaporation processes and reconstruct the paleoclimate. Up to now, there is no published daily dew isotope record on δ²H, δ¹⁸O, δ¹⁷O, d-excess, and ¹⁷O-excess. Here, we collected daily dew between July 2014 and April 2018 from three distinct climatic regions (i.e., Gobabeb in the central Namib Desert with desert climate, Nice in France with Mediterranean climate, and Indianapolis in the central United States with humid continental climate). The δ²H, δ¹⁸O, and δ¹⁷O of dew were simultaneously analyzed using a Triple Water Vapor Isotope Analyzer based on Off-Axis Integrated Cavity Output Spectroscopy technique, and then d-excess and ¹⁷O-excess were calculated. This report presents daily dew isotope dataset under three climatic regions. It is useful for researchers to use it as a reference when studying global dew dynamics and dew formation mechanisms.