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Hydro-climatic and lake change patterns in Arctic permafrost and non-permafrost areas
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
Number of Authors: 3
2015 (English)In: Journal of Hydrology, ISSN 0022-1694, E-ISSN 1879-2707, Vol. 529, 134-145 p.Article in journal (Refereed) Published
Abstract [en]

This paper investigates patterns of lake-area and hydro-climatic change in Arctic river basins, and possible influence of permafrost change reflected in such patterns. A salient change pattern, emerging across all investigated basins in both permafrost and non-permafrost areas, is an opposite change direction in runoff (R) from that in precipitation (P). To explain this change contrast, an increase (decrease) in relative water-balance constrained evapotranspiration ETwb/P is required where R decreases (increases). Increasing temporal variability of daily river discharge (sdQ) is found in all basins with spatially extensive lake decrease, which also exhibit decrease in ELwb/P. Clear indication of basin-wide permafrost thaw is found in only one basin, and is possible in two more, but unlikely in the largest of the total four investigated permafrost basins.

Place, publisher, year, edition, pages
2015. Vol. 529, 134-145 p.
Keyword [en]
Hydro-climatic change, Lake change, Evapotranspiration change, Runoff change, Permafrost change, Arctic basins
National Category
Civil Engineering Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-123804DOI: 10.1016/j.jhydrol.2015.07.005ISI: 000364248800011OAI: oai:DiVA.org:su-123804DiVA: diva2:881914
Available from: 2015-12-11 Created: 2015-12-07 Last updated: 2015-12-11Bibliographically approved

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Mård Karlsson, JohannaJaramillo, FernandoDestouni, Georgia
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