Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality

<p>This paper describes the University of New Hampshire Water Balance Model, WBM, a process-based gridded global hydrologic model that simulates the land surface components of the global water cycle and includes water extraction for use in agriculture and domestic sectors. The WBM was first pu...

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Main Authors: D. S. Grogan, S. Zuidema, A. Prusevich, W. M. Wollheim, S. Glidden, R. B. Lammers
Format: Article
Language:English
Published: Copernicus Publications 2022-10-01
Series:Geoscientific Model Development
Online Access:https://gmd.copernicus.org/articles/15/7287/2022/gmd-15-7287-2022.pdf
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author D. S. Grogan
S. Zuidema
A. Prusevich
W. M. Wollheim
W. M. Wollheim
S. Glidden
R. B. Lammers
author_facet D. S. Grogan
S. Zuidema
A. Prusevich
W. M. Wollheim
W. M. Wollheim
S. Glidden
R. B. Lammers
author_sort D. S. Grogan
collection DOAJ
description <p>This paper describes the University of New Hampshire Water Balance Model, WBM, a process-based gridded global hydrologic model that simulates the land surface components of the global water cycle and includes water extraction for use in agriculture and domestic sectors. The WBM was first published in 1989; here, we describe the first fully open-source WBM version (v.1.0.0). Earlier descriptions of WBM methods provide the foundation for the most recent model version that is detailed here. We present an overview of the model functionality, utility, and evaluation of simulated global river discharge and irrigation water use. This new version adds a novel suite of water source tracking modules that enable the analysis of flow-path histories on water supply. A key feature of WBM v.1.0.0 is the ability to identify the partitioning of sources for each stock or flux within the model. Three different categories of tracking are available: (1) primary inputs of water to the surface of the terrestrial hydrologic cycle (liquid precipitation, snowmelt, glacier melt, and unsustainable groundwater); (2) water that has been extracted for human use and returned to the terrestrial hydrologic system; and (3) runoff originating from user-defined spatial land units. Such component tracking provides a more fully transparent model in that users can identify the underlying mechanisms generating the simulated behavior. We find that WBM v.1.0.0 simulates global river discharge and irrigation water withdrawals well, even with default parameter settings, and for the first time, we are able to show how the simulation arrives at these fluxes by using the novel tracking functions.</p>
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spelling doaj.art-33d77d8ecc084ccc85a1ab1f86b9fb862022-12-22T03:49:28ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032022-10-01157287732310.5194/gmd-15-7287-2022Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionalityD. S. Grogan0S. Zuidema1A. Prusevich2W. M. Wollheim3W. M. Wollheim4S. Glidden5R. B. Lammers6Earth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USAEarth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USAEarth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USAEarth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USADepartment of Natural Resources and the Environment, University of New Hampshire, NH 03824, USAEarth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USAEarth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USA<p>This paper describes the University of New Hampshire Water Balance Model, WBM, a process-based gridded global hydrologic model that simulates the land surface components of the global water cycle and includes water extraction for use in agriculture and domestic sectors. The WBM was first published in 1989; here, we describe the first fully open-source WBM version (v.1.0.0). Earlier descriptions of WBM methods provide the foundation for the most recent model version that is detailed here. We present an overview of the model functionality, utility, and evaluation of simulated global river discharge and irrigation water use. This new version adds a novel suite of water source tracking modules that enable the analysis of flow-path histories on water supply. A key feature of WBM v.1.0.0 is the ability to identify the partitioning of sources for each stock or flux within the model. Three different categories of tracking are available: (1) primary inputs of water to the surface of the terrestrial hydrologic cycle (liquid precipitation, snowmelt, glacier melt, and unsustainable groundwater); (2) water that has been extracted for human use and returned to the terrestrial hydrologic system; and (3) runoff originating from user-defined spatial land units. Such component tracking provides a more fully transparent model in that users can identify the underlying mechanisms generating the simulated behavior. We find that WBM v.1.0.0 simulates global river discharge and irrigation water withdrawals well, even with default parameter settings, and for the first time, we are able to show how the simulation arrives at these fluxes by using the novel tracking functions.</p>https://gmd.copernicus.org/articles/15/7287/2022/gmd-15-7287-2022.pdf
spellingShingle D. S. Grogan
S. Zuidema
A. Prusevich
W. M. Wollheim
W. M. Wollheim
S. Glidden
R. B. Lammers
Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
Geoscientific Model Development
title Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
title_full Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
title_fullStr Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
title_full_unstemmed Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
title_short Water balance model (WBM) v.1.0.0: a scalable gridded global hydrologic model with water-tracking functionality
title_sort water balance model wbm v 1 0 0 a scalable gridded global hydrologic model with water tracking functionality
url https://gmd.copernicus.org/articles/15/7287/2022/gmd-15-7287-2022.pdf
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