Articles | Volume 28, issue 18
https://doi.org/10.5194/hess-28-4275-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-28-4275-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Sep 2024
Research article |
| 18 Sep 2024
| 18 Sep 2024
Spatiotemporal variation of modern lake, stream, and soil water isotopes in Iceland
David J. Harning
CORRESPONDING AUTHOR
Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80303, USA
Jonathan H. Raberg
Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80303, USA
Faculty of Earth Sciences, University of Iceland, 101 Reykjavík, Iceland
Department of Geology and Geophysics, University of Wyoming, Laramie, WY 82071, USA
Jamie M. McFarlin
Department of Geology and Geophysics, University of Wyoming, Laramie, WY 82071, USA
Yarrow Axford
Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USA
Christopher R. Florian
Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80303, USA
Faculty of Earth Sciences, University of Iceland, 101 Reykjavík, Iceland
National Ecological Observatory Network, Battelle, Boulder, CO 80301, USA
Kristín B. Ólafsdóttir
Icelandic Meteorological Office, 150 Reykjavík, Iceland
Sebastian Kopf
Department of Geological Sciences, University of Colorado Boulder, Boulder, CO 80309, USA
Julio Sepúlveda
Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80303, USA
Department of Geological Sciences, University of Colorado Boulder, Boulder, CO 80309, USA
Gifford H. Miller
Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80303, USA
Department of Geological Sciences, University of Colorado Boulder, Boulder, CO 80309, USA
Áslaug Geirsdóttir
Faculty of Earth Sciences, University of Iceland, 101 Reykjavík, Iceland
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Short summary
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The CMIP6–PMIP4 Tier 1 lig127k experiment was designed to address the climate responses to strong orbital forcing. We present a multi-model ensemble of 17 climate models, most of which have also completed the CMIP6 DECK experiments and are thus important for assessing future projections. The lig127ksimulations show strong summer warming over the NH continents. More than half of the models simulate a retreat of the Arctic minimum summer ice edge similar to the average for 2000–2018.
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Short summary
As human-induced global warming progresses, changes to Arctic precipitation are expected, but predictions are limited by an incomplete understanding of past changes in the hydrological system. Here, we measured water isotopes, a common tool to reconstruct past precipitation, from lakes, streams, and soils across Iceland. These data will allow robust reconstruction of past precipitation changes in Iceland in future studies.
As human-induced global warming progresses, changes to Arctic precipitation are expected, but...
