Simulating seasonal to multi-decadal variation in lake thermal response to meteorological forcing using the UCLAKE 1-dimensional model code

Morales-Marín, Luis A.; French, Jon R.; Burningham, Helene; Evans, Chris ORCID: https://orcid.org/0000-0002-7052-354X; Burden, Annette. 2021 Simulating seasonal to multi-decadal variation in lake thermal response to meteorological forcing using the UCLAKE 1-dimensional model code. Limnologica, 88, 125874. 22, pp. https://doi.org/10.1016/j.limno.2021.125874

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Official URL: http://dx.doi.org/10.1016/j.limno.2021.125874

Abstract/Summary

Lake temperature responses to climate forcing are of interest on account of the important linkages between water temperature and ecosystem processes. This paper describes a new 1-dimensional (1D) numerical model code and its application to investigations of multi-scale linkages between the vertical temperature structure and meteorological forcing. UCLAKE is implemented as highly portable open-source software, based on computationally efficient algorithms, and able to resolve sub-daily (e.g., hourly) dynamics while retaining the efficiency to simulate multi-decadal time scales. A UCLAKE model is calibrated and validated against thermistor profile time series for a small upland lake in North Wales, UK. Some of the challenges in 1D model calibration are explored and a sensitivity analysis reveals a dependence of optimal parameter set values on water column depth and time. An exploratory 52-year hindcast simulation demonstrates the computational efficiency of UCLAKE for multi-decadal studies of trends in lake temperature that vary with depth. A supplementary application of UCLAKE to Windermere, in the English Lake District, demonstrates its performance for larger and deeper lakes.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.limno.2021.125874
UKCEH and CEH Sections/Science Areas:	Soils and Land Use (Science Area 2017-)
ISSN:	0075-9511
Additional Keywords:	lake temperature, lake warming, stratification, mixing, numerical model, open source
NORA Subject Terms:	Ecology and Environment
Date made live:	03 Jun 2021 11:25 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/530462

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.limno.2021.125874

UKCEH and CEH Sections/Science Areas:

Soils and Land Use (Science Area 2017-)

ISSN:

0075-9511

Additional Keywords:

lake temperature, lake warming, stratification, mixing, numerical model, open source

NORA Subject Terms:

Ecology and Environment