Upscaling surface energy fluxes over the North Slope of Alaska using airborne eddy-covariance measurements and environmental response functions


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Jorg.Hartmann [ at ] awi.de

Abstract

The goal of this study is to scale aircraft measured fluxes of sensible and latent heat to the North Slope of Alaska and develop high resolution flux maps. For this purpose we analyzed an eddy-covariance data set obtained by the research aircraft POLAR 5 as part of the AIRMETH-2012 campaign, and investigated the spatial patterning of energy fluxes. Environmental response functions between flux observations and corresponding biophysical and meteorological drivers were estimated using a combination of time-frequency decomposition, dispersion modeling and machine learning. The extracted relationships are then used to scale observational data across heterogeneous Arctic landscapes, thus improving the spatial coverage and representativeness of the energy fluxes. Maps of projected energy fluxes are used to asses energy partitioning in northern ecosystems and to determine dominant energy exchange processes of permafrost area.



Item Type
Conference (Conference paper)
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Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
5​th​ European Conference on Permafrost, 01 Jun 2018 - 01 Jul 2018, Chamonix, France.
Eprint ID
47695
Cite as
Serafimovic, A. , Metzger, S. , Hartmann, J. , Kohnert, K. , Zona, D. and Sachs, T. (2018): Upscaling surface energy fluxes over the North Slope of Alaska using airborne eddy-covariance measurements and environmental response functions , 5​th​ European Conference on Permafrost, Chamonix, France, June 2018 - July 2018 .


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