Stable isotopes in atmospheric water vapor and applications to the hydrologic cycle
Joseph Galewsky,Hans Christian Steen-Larsen,Robert D. Field,Robert D. Field,John Worden,Camille Risi,Matthias Schneider +6 more
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TLDR
Improved measurement and modeling of water vapor isotopic composition opens the door to new advances in the understanding of the atmospheric water cycle, in processes ranging from the marine boundary layer, through deep convection and tropospheric mixing, and into the water cycle of the stratosphere.Abstract:
The measurement and simulation of water vapor isotopic composition has matured rapidly over the last decade, with long-term datasets and comprehensive modeling capabilities now available. Theories for water vapor isotopic composition have been developed by extending the theories that have been used for the isotopic composition of precipitation to include a more nuanced understanding of evaporation, large-scale mixing, deep convection, and kinetic fractionation. The technologies for in-situ and remote sensing measurements of water vapor isotopic composition have developed especially rapidly over the last decade, with discrete water vapor sampling methods, based on mass spectroscopy, giving way to laser spectroscopic methods and satellite- and ground-based infrared absorption techniques. The simulation of water vapor isotopic composition has evolved from General Circulation Model (GCM) methods for simulating precipitation isotopic composition to sophisticated isotope-enabled microphysics schemes using higher-order moments for water- and ice-size distributions. The incorporation of isotopes into GCMs has enabled more detailed diagnostics of the water cycle and has led to improvements in its simulation. The combination of improved measurement and modeling of water vapor isotopic composition opens the door to new advances in our understanding of the atmospheric water cycle, in processes ranging from the marine boundary layer, through deep convection and tropospheric mixing, and into the water cycle of the stratosphere. Finally, studies of the processes governing modern water vapor isotopic composition provide an improved framework for the interpretation of paleoclimate proxy records of the hydrological cycle.read more
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Is the deuterium excess in precipitation a reliable tracer of moisture sources and water resources fate in the western Mediterranean? New insights from the Apuan Alps (Italy)
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Emerging Technologies and Synergies for Airborne and Space-Based Measurements of Water Vapor Profiles
Amin R. Nehrir,Christoph Kiemle,Matthew Lebsock,Gottfried Kirchengast,Stefan A. Buehler,Ulrich Löhnert,Congliang Liu,Peter Charles Hargrave,Maria Barrera-Verdejo,David M. Winker +9 more
TL;DR: In this article, the authors highlight new technologies and improved measurement approaches for measuring lower tropospheric water vapor and their expected added value to current observations, including differential absorption lidar and radar, microwave occultation between low Earth orbiters, and hyperspectral microwave remote sensing.
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Automated calibration of laser spectrometer measurements of δ18O and δ2H values in water vapour using a Dew Point Generator
Niels C. Munksgaard,Niels C. Munksgaard,Alexander W. Cheesman,Andrew Gray-Spence,Lucas A. Cernusak,Michael I. Bird +5 more
TL;DR: A new low-cost device for calibration of both water vapour mole fraction and isotope composition is developed and is a robust, cost-effective option for long-term field measurements of water vapours isotopes.
Proceedings ArticleDOI
WaVIL : a Differential Absorption LIDAR for Water Vapor and Isotope HDO Observation in the Lower Troposphere -Instrument Design
Jonas Hamperl,Clément Capitaine,R. Santagata,Jean-Baptiste Dherbecourt,Jean-Michel Melkonian,Antoine Godard,Myriam Raybaut,Laurence Régalia,Bruno Grouiez,Frédéric Blouzon,Nicolas Geyskens,Corinne Evesque,Patrick Chazette,Julien Totems,Cyrille Flamant +14 more
TL;DR: In this paper, a differential absorption LIDAR targeting HDO/H 2 16 O isotopic ratio measurement with high vertical resolution is presented, enabled by infrared water vapor spectroscopy and recent high power multi-species parametric emitter developments.
References
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Journal ArticleDOI
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Journal ArticleDOI
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