Preprints
https://doi.org/10.5194/gmd-2021-419
https://doi.org/10.5194/gmd-2021-419
Submitted as: model description paper
16 Dec 2021
Submitted as: model description paper | 16 Dec 2021
Status: a revised version of this preprint is currently under review for the journal GMD.

UniFHy v0.1: A community framework for the terrestrial water cycle in Python

Thibault Hallouin1,2, Richard J. Ellis3, Douglas B. Clark3, Simon J. Dadson3,4, Andrew G. Hughes5, Bryan N. Lawrence1,2,6, Grenville M. S. Lister1,2, and Jan Polcher7 Thibault Hallouin et al.
  • 1National Centre for Atmospheric Science, UK
  • 2Department of Meteorology, University of Reading, UK
  • 3UK Centre for Ecology & Hydrology, UK
  • 4School of Geography and the Environment, University of Oxford, UK
  • 5British Geological Survey, UK
  • 6Department of Computer Science, University of Reading, UK
  • 7Laboratoire de Météorologie Dynamique, IPSL, CNRS, France

Abstract. Land surface, hydrological, and groundwater modelling communities all have expertise in simulating the hydrological processes at play in the land system, but these communities have largely remained distinct with limited collaboration between disciplines. In order to address key societal questions regarding the future availability of water resources and the intensity of extreme events such as floods and droughts in a changing climate, these communities must build on the strengths of one another. The development of a common modelling infrastructure, a framework, can contribute to stimulating cross-fertilisation between them. By allowing (parts of) their existing models to be coupled together, improved land system models can be built to better understand and simulate the terrestrial hydrological cycle. This paper presents a Python implementation of such a framework named the Unified Framework for Hydrology (unifhy). The framework aims to provide the technical infrastructure required to couple models, taking into account the specific needs of a land system model. Its conceptual design and technical capabilities are outlined first, before its usage and useful characteristics are demonstrated through case studies. The limitations of the current framework and necessary future developments are finally presented as a road map for later versions and/or other implementations of the framework.

Thibault Hallouin et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CEC1: 'Comment on gmd-2021-419', Juan Antonio Añel, 31 Dec 2021
    • CC1: 'Reply on CEC1', B.N. Lawrence, 02 Jan 2022
      • CEC2: 'Reply on CC1', Juan Antonio Añel, 02 Jan 2022
  • RC1: 'Comment on gmd-2021-419', Anonymous Referee #1, 04 Mar 2022
    • AC1: 'Reply on RC1', Thibault Hallouin, 18 Apr 2022
  • RC2: 'Comment on gmd-2021-419', Ethan Coon, 07 Mar 2022
    • AC2: 'Reply on RC2', Thibault Hallouin, 22 Apr 2022

Thibault Hallouin et al.

Model code and software

unifhycontrib-smart Thibault Hallouin, Eva M. Mockler, Michael Bruen https://zenodo.org/record/5780113

unifhycontrib-rfm Huw Lewis, Thibault Hallouin https://doi.org/10.5281/zenodo.5780054

unifhycontrib-artemis Simon J. Dadson, Thibault Hallouin, Richard J. Ellis https://doi.org/10.5281/zenodo.5779947

unifhy Thibault Hallouin, Richard J. Ellis https://doi.org/10.5281/zenodo.5764773

Thibault Hallouin et al.

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Short summary
A new framework for modelling the terrestrial water cycle in the land system has been implemented. It considers the water cycle as three interconnected components, bringing flexibility in the choice of the physical processes and their temporal and spatial resolutions, and fostering collaborations between land surface, hydrological, and groundwater modelling communities to address key societal questions on the future of water resources in a changing climate.