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  Temporal and spatial scales of water temperature variability as an indicator for mixing in a polymictic lake

Schmidt, S. R., Gerten, D., Hintze, T., Lischeid, G., Livingston, D. M., Adrian, R. (2018): Temporal and spatial scales of water temperature variability as an indicator for mixing in a polymictic lake. - Inland Waters, 8, 1, 82-95.
https://doi.org/10.1080/20442041.2018.1429067

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 Creators:
Schmidt, S. R.1, Author
Gerten, Dieter2, Author              
Hintze, T.1, Author
Lischeid, G.1, Author
Livingston, D. M.1, Author
Adrian, R.1, Author
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1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: We applied coarse spectral analysis to more than 2 decades of daily near-surface water temperature (WT) measurements from Müggelsee, a shallow polymictic lake in Germany, to systematically characterize patterns in WT variability from daily to yearly temporal scales. Comparison of WT with local air temperature indicates that the WT variability patterns are likely attributable to both meteorological forcing and internal lake dynamics. We identified seasonal patterns of WT variability and showed that WT variability increases with increasing Schmidt stability, decreasing Lake number and decreasing ice cover duration, and is higher near the shore than in open water. We introduced the slope of WT spectra as an indicator for the degree of lake mixing to help explain the identified temporal and spatial scales of WT variability. The explanatory power of this indicator in other lakes with different mixing regimes remains to be established.

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 Dates: 2018
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1080/20442041.2018.1429067
PIKDOMAIN: Earth System Analysis - Research Domain I
eDoc: 8026
Research topic keyword: Freshwater
Research topic keyword: Ecosystems
Model / method: Nonlinear Data Analysis
Regional keyword: Brandenburg
Organisational keyword: RD1 - Earth System Analysis
Working Group: Terrestrial Safe Operating Space
 Degree: -

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Title: Inland Waters
Source Genre: Journal, SCI, Scopus
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Pages: - Volume / Issue: 8 (1) Sequence Number: - Start / End Page: 82 - 95 Identifier: Other: Taylor & Francis
Other: International Society of Limnology
Other: 2044-205X
ISSN: 2044-2041
CoNE: https://publications.pik-potsdam.de/cone/journals/resource/inland-waters