Near-surface atmospheric vapour and oceanic surface water isotopic compositions calibrated data from POLARSTERN cruises, 2015-2017

Here, we present a new isotopic dataset of near-surface water vapour and oceanic surface water continuously surveyed from the Polarstern research vessel during a period of two years from 2015-06-29 to 2017-07-01. The dataset covers areas spanning from the North Pole to the coasts of Antarctica in th...

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Bibliographic Details
Main Authors: Bonne, Jean-Louis, Werner, Martin, Meyer, Hanno, Kipfstuhl, Sepp, Rabe, Benjamin, Behrens, Melanie, Schönicke, Lutz, Steen-Larsen, Hans Christian, Arndt, Stefanie, Bohlmann, Stephanie, Burkhardt, Elke, Engelmann, Ronny, Flau, Michael, Goedecke, Julia, Haarig, Moritz, Hampe, Hendrik, Heuzé, Céline, Hoppmann, Mario, Horn, Myriel, Kalesse, Heike, Lembke-Jene, Lester, Nikolopoulos, Anna, Rossmann, Leonard, Schlindwein, Vera, Steinmacher, Bermann, Tippenhauer, Sandra, Valk, Ole
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
AWI_Envi
ISOARC
Isotope signature of water vapour over the Arctic Ocean
Polar Terrestrial Environmental Systems @ AWI
Arctic
Arctic Ocean
North Pole
Antarc*
Antarctica
Sea ice
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.897578
https://doi.org/10.1594/PANGAEA.897578
Description
Summary:Here, we present a new isotopic dataset of near-surface water vapour and oceanic surface water continuously surveyed from the Polarstern research vessel during a period of two years from 2015-06-29 to 2017-07-01. The dataset covers areas spanning from the North Pole to the coasts of Antarctica in the Atlantic sector. Water vapour observations have been measured continuously on-board using a Cavity Ring-Down Spectrometer from a 29 m elevation above the sea level. The oceanic water has been sampled on a daily basis and later analyzed for water isotopic composition at the Alfred Wegener Institut laboratory in Potsdam, Germany. These observations contribute to better understand the creation of the first water vapour isotopic signal during oceanic evaporation. They reveal that the vapour deuterium excess within the atmospheric boundary layer is not modulated by wind speed, contrary to the commonly used theory, but controlled by relative humidity and sea surface temperature only. In sea ice covered regions, the sublimation of deposited snow on sea ice is also revealed as a key process controlling the local water vapour isotopic composition.

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