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Discussion papers | Copyright
https://doi.org/10.5194/gmd-2017-257
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 20 Nov 2017

Model description paper | 20 Nov 2017

Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Geoscientific Model Development (GMD).

A General Lake Model (GLM 2.4) for linking with high-frequency sensor data from the Global Lake Ecological Observatory Network (GLEON)

Matthew R. Hipsey1, Louise C. Bruce1, Casper Boon1, Brendan Busch1, Cayelan C. Carey2, David P. Hamilton3, Paul C. Hanson4, Jordan S. Read5, Eduardo de Sousa1, Michael Weber6, and Luke A. Winslow7 Matthew R. Hipsey et al.
  • 1UWA School of Agriculture & Environment, The University of Western Australia, Crawley WA, 6009, Australia
  • 2Department of Biological Sciences, Virginia Tech, Blacksburg VA, USA
  • 3Australian Rivers Institute, Griffith University, Nathan QLD, 4111, Australia
  • 4Center for Limnology, University of Wisconsin – Madison, Madison WI, USA
  • 5Center for Integrated Data Analytics, US Geological Survey, Middleton WI, USA
  • 6Department of Lake Research, Helmholtz Centre for Environmental Research – UFZ, Magdeburg, Germany
  • 7Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy NY, USA

Abstract. The General Lake Model (GLM) is a one-dimensional open-source model code designed to simulate the hydrodynamics of lakes, reservoirs and wetlands. GLM was developed to support the science needs of the Global Lake Ecological Observatory Network (GLEON), a network of lake sensors and researchers attempting to understand lake functioning and address questions about how lakes around the world vary in response to climate and land-use change. The scale and diversity of lake types, locations and sizes, as well as the observational data within GLEON, created the need for a robust community model of lake dynamics with sufficient flexibility to accommodate a range of scientific and management needs of the GLEON community. This paper summarises the scientific basis and numerical implementation of the model algorithms, including details of sub-models that simulate surface heat exchange and ice-cover dynamics, vertical mixing and inflow/outflow dynamics. A summary of typical parameter values for lakes and reservoirs collated from a range of sources is included. GLM supports a dynamic coupling with biogeochemical and ecological modelling libraries for integrated simulations of water quality and ecosystem health. An overview of approaches for integration with other models, and utilities for the analysis of model outputs and for undertaking sensitivity and uncertainty assessments is also provided. Finally, we discuss application of the model within a distributed cloud-computing environment, and as a tool to support learning of network participants.

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The General Lake Model (GLM) has been developed to undertake simulation of a diverse range of lakes and reservoirs, thereby supporting the science needs of the Global Lake Ecological Observatory Network (GLEON), a network of lake sensors and researchers attempting to understand lake functioning and address questions about how lakes around the world vary in response to climate and land-use change. The paper describes the science-basis and application of the model.
The General Lake Model (GLM) has been developed to undertake simulation of a diverse range of...
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