The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features
<p>Water – Global Assessment and Prognosis (WaterGAP) is a modeling approach for quantifying water resources and water use for all land areas of the Earth that has served science and society since 1996. In this paper, the refinements, new algorithms, and new data of the most recent model versi...
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Copernicus Publications
2024-12-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://gmd.copernicus.org/articles/17/8817/2024/gmd-17-8817-2024.pdf |
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| author | H. Müller Schmied H. Müller Schmied T. Trautmann S. Ackermann D. Cáceres M. Flörke H. Gerdener E. Kynast T. A. Peiris L. Schiebener M. Schumacher P. Döll P. Döll |
| author_facet | H. Müller Schmied H. Müller Schmied T. Trautmann S. Ackermann D. Cáceres M. Flörke H. Gerdener E. Kynast T. A. Peiris L. Schiebener M. Schumacher P. Döll P. Döll |
| author_sort | H. Müller Schmied |
| collection | DOAJ |
| description | <p>Water – Global Assessment and Prognosis (WaterGAP) is a modeling approach for quantifying water resources and water use for all land areas of the Earth that has served science and society since 1996. In this paper, the refinements, new algorithms, and new data of the most recent model version v2.2e are described, together with a thorough evaluation of the simulated water use, streamflow, and terrestrial water storage anomaly against observation data. WaterGAP v2.2e improves the handling of inland sinks and now excludes not only large but also small human-made reservoirs when simulating naturalized conditions. The reservoir and non-irrigation water use data were updated. In addition, the model was calibrated against an updated and extended data set of streamflow observations at 1509 gauging stations. The modifications resulted in a small decrease in the estimated global renewable water resources. The model can now be started using prescribed water storages and other conditions, facilitating data assimilation and near-real-time monitoring and forecast simulations. For specific applications, the model can consider the output of a glacier model, approximate the effect of rising CO<span class="inline-formula"><sub>2</sub></span> concentrations on evapotranspiration, or calculate the water temperature in rivers. In the paper, the publicly available standard model output is described, and caveats of the model version are provided alongside the description of the model setup in the ISIMIP3 framework.</p> |
| format | Article |
| id | doaj-art-ae471dda2e9c46ca9dc9e8733c7b284d |
| institution | Kabale University |
| issn | 1991-959X 1991-9603 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj-art-ae471dda2e9c46ca9dc9e8733c7b284d2024-12-12T07:40:16ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032024-12-01178817885210.5194/gmd-17-8817-2024The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new featuresH. Müller Schmied0H. Müller Schmied1T. Trautmann2S. Ackermann3D. Cáceres4M. Flörke5H. Gerdener6E. Kynast7T. A. Peiris8L. Schiebener9M. Schumacher10P. Döll11P. Döll12Institute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanySenckenberg Leibniz Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, GermanyInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanyInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanyInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanyChair of Engineering Hydrology and Water Resources Management, Ruhr University Bochum, Bochum, GermanyInstitute of Geodesy and Geoinformation, University of Bonn, Bonn, GermanyCenter for Environmental Systems Research, University of Kassel, Kassel, GermanyInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanyInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanyGeodesy Group, Department of Sustainability and Planning, Aalborg University, Aalborg, DenmarkInstitute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, GermanySenckenberg Leibniz Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, Germany<p>Water – Global Assessment and Prognosis (WaterGAP) is a modeling approach for quantifying water resources and water use for all land areas of the Earth that has served science and society since 1996. In this paper, the refinements, new algorithms, and new data of the most recent model version v2.2e are described, together with a thorough evaluation of the simulated water use, streamflow, and terrestrial water storage anomaly against observation data. WaterGAP v2.2e improves the handling of inland sinks and now excludes not only large but also small human-made reservoirs when simulating naturalized conditions. The reservoir and non-irrigation water use data were updated. In addition, the model was calibrated against an updated and extended data set of streamflow observations at 1509 gauging stations. The modifications resulted in a small decrease in the estimated global renewable water resources. The model can now be started using prescribed water storages and other conditions, facilitating data assimilation and near-real-time monitoring and forecast simulations. For specific applications, the model can consider the output of a glacier model, approximate the effect of rising CO<span class="inline-formula"><sub>2</sub></span> concentrations on evapotranspiration, or calculate the water temperature in rivers. In the paper, the publicly available standard model output is described, and caveats of the model version are provided alongside the description of the model setup in the ISIMIP3 framework.</p>https://gmd.copernicus.org/articles/17/8817/2024/gmd-17-8817-2024.pdf |
| spellingShingle | H. Müller Schmied H. Müller Schmied T. Trautmann S. Ackermann D. Cáceres M. Flörke H. Gerdener E. Kynast T. A. Peiris L. Schiebener M. Schumacher P. Döll P. Döll The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features Geoscientific Model Development |
| title | The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features |
| title_full | The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features |
| title_fullStr | The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features |
| title_full_unstemmed | The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features |
| title_short | The global water resources and use model WaterGAP v2.2e: description and evaluation of modifications and new features |
| title_sort | global water resources and use model watergap v2 2e description and evaluation of modifications and new features |
| url | https://gmd.copernicus.org/articles/17/8817/2024/gmd-17-8817-2024.pdf |
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