Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity
Hydrological transformations induced by climate warming are causing Arctic annual fluvial energy to shift from skewed (snowmelt-dominated) to multimodal (snowmelt- and rainfall-dominated) distributions. We integrated decade-long hydrometeorological and biogeochemical data from the High Arctic to sho...
Published in: | Nature Communications |
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Language: | English |
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2021
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5003543 2023-05-15T14:39:31+02:00 Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity Beel, C. Heslop, J. Orwin, J. Pope, M. Schevers, A. Hung, J. Lafreniere, M. Lamoureux, S. 2021 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543_4/component/file_5006066/5003543.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-021-21759-3 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543_4/component/file_5006066/5003543.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ CC-BY Nature Communications info:eu-repo/semantics/article 2021 ftgfzpotsdam https://doi.org/10.1038/s41467-021-21759-3 2022-09-14T05:57:59Z Hydrological transformations induced by climate warming are causing Arctic annual fluvial energy to shift from skewed (snowmelt-dominated) to multimodal (snowmelt- and rainfall-dominated) distributions. We integrated decade-long hydrometeorological and biogeochemical data from the High Arctic to show that shifts in the timing and magnitude of annual discharge patterns and stream power budgets are causing Arctic material transfer regimes to undergo fundamental changes. Increased late summer rainfall enhanced terrestrial-aquatic connectivity for dissolved and particulate material fluxes. Permafrost disturbances (<3% of the watersheds’ areal extent) reduced watershed-scale dissolved organic carbon export, offsetting concurrent increased export in undisturbed watersheds. To overcome the watersheds’ buffering capacity for transferring particulate material (30 ± 9 Watt), rainfall events had to increase by an order of magnitude, indicating the landscape is primed for accelerated geomorphological change when future rainfall magnitudes and consequent pluvial responses exceed the current buffering capacity of the terrestrial-aquatic continuum. Article in Journal/Newspaper Arctic permafrost GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Nature Communications 12 1 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
Hydrological transformations induced by climate warming are causing Arctic annual fluvial energy to shift from skewed (snowmelt-dominated) to multimodal (snowmelt- and rainfall-dominated) distributions. We integrated decade-long hydrometeorological and biogeochemical data from the High Arctic to show that shifts in the timing and magnitude of annual discharge patterns and stream power budgets are causing Arctic material transfer regimes to undergo fundamental changes. Increased late summer rainfall enhanced terrestrial-aquatic connectivity for dissolved and particulate material fluxes. Permafrost disturbances (<3% of the watersheds’ areal extent) reduced watershed-scale dissolved organic carbon export, offsetting concurrent increased export in undisturbed watersheds. To overcome the watersheds’ buffering capacity for transferring particulate material (30 ± 9 Watt), rainfall events had to increase by an order of magnitude, indicating the landscape is primed for accelerated geomorphological change when future rainfall magnitudes and consequent pluvial responses exceed the current buffering capacity of the terrestrial-aquatic continuum. |
format |
Article in Journal/Newspaper |
author |
Beel, C. Heslop, J. Orwin, J. Pope, M. Schevers, A. Hung, J. Lafreniere, M. Lamoureux, S. |
spellingShingle |
Beel, C. Heslop, J. Orwin, J. Pope, M. Schevers, A. Hung, J. Lafreniere, M. Lamoureux, S. Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
author_facet |
Beel, C. Heslop, J. Orwin, J. Pope, M. Schevers, A. Hung, J. Lafreniere, M. Lamoureux, S. |
author_sort |
Beel, C. |
title |
Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
title_short |
Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
title_full |
Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
title_fullStr |
Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
title_full_unstemmed |
Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity |
title_sort |
emerging dominance of summer rainfall driving high arctic terrestrial-aquatic connectivity |
publishDate |
2021 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543_4/component/file_5006066/5003543.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Nature Communications |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-021-21759-3 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003543_4/component/file_5006066/5003543.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-21759-3 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
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1766311515476983808 |