Upscaling Water Body Size Distributions


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Sina.Muster [ at ] awi.de

Abstract

The millions of ponds and small lakes in Arctic lowlands have been identified as biogeochemical hotspots with high process rates. However, water bodies with surface areas smaller than 1 km² are not captured on a global scale. This study upscales local, high-resolution water body size distributions to the regional scale in the Lena Delta (Siberia) and the Mackenzie Delta (Canada). We investigate (i) the variability of water body size distributions within and between the two deltas, and (ii) relate differences to hydrological, geomorphological and permafrost processes. Water bodies are mapped from aerial, TerraSAR-X and Kompsat-2 imagery with resolutions of 4 m and better. The Lena Delta features about 40% more ponds than the Mackenzie Delta. Within-landscape variability is low in both deltas which allows the estimation of regional distributions. Statistical properties of such regional distributions can be used to incorporate ponds and small lakes into larger-scale climate and ecosystem models.



Item Type
Conference (Talk)
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Primary Division
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Not peer-reviewed
Publication Status
Published
Event Details
DUE Permafrost 2014 workshop, 11 Feb 2014 - 13 Feb 2014, Frascati, Italy.
Eprint ID
34984
Cite as
Muster, S. , Roth, K. , Langer, M. , Morgenstern, A. , Stettner, S. and Boike, J. (2014): Upscaling Water Body Size Distributions , DUE Permafrost 2014 workshop, Frascati, Italy, 11 February 2014 - 13 February 2014 .


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