A global hydrological simulation to specify the sources of water used by humans

Abstract. Humans abstract water from various sources to sustain their livelihood and society. Some global hydrological models (GHMs) include explicit schemes of human water abstraction, but the representation and performance of these schemes remain limited. We substantially enhanced the water abstraction schemes of the H08 GHM. This enabled us to estimate water abstraction from six major water sources, namely, river flow regulated by global reservoirs (i.e., reservoirs regulating the flow of the world's major rivers), aqueduct water transfer, local reservoirs, seawater desalination, renewable groundwater, and nonrenewable groundwater. In its standard setup, the model covers the whole globe at a spatial resolution of 0.5° × 0.5°, and the calculation interval is 1 day. All the interactions were simulated in a single computer program, and all water fluxes and storage were strictly traceable at any place and time during the simulation period. A global hydrological simulation was conducted to validate the performance of the model for the period of 1979–2013 (land use was fixed for the year 2000). The simulated water fluxes for water abstraction were validated against those reported in earlier publications and showed a reasonable agreement at the global and country level. The simulated monthly river discharge and terrestrial water storage (TWS) for six of the world's most significantly human-affected river basins were compared with gauge observations and the data derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission. It is found that the simulation including the newly added schemes outperformed the simulation without human activities. The simulated results indicated that, in 2000, of the 3628±75 km3 yr−1 global freshwater requirement, 2839±50 km3 yr−1 was taken from surface water and 789±30 km3 yr−1 from groundwater. Streamflow, aqueduct water transfer, local reservoirs, and seawater desalination accounted for 1786±23, 199±10, 106±5, and 1.8±0 km3 yr−1 of the surface water, respectively. The remaining 747±45 km3 yr−1 freshwater requirement was unmet, or surface water was not available when and where it was needed in our simulation. Renewable and nonrenewable groundwater accounted for 607±11 and 182±26 km3 yr−1 of the groundwater total, respectively. Each source differed in its renewability, economic costs for development, and environmental consequences of usage. The model is useful for performing global water resource assessments by considering the aspects of sustainability, economy, and environment.

[1]  S. Kanae,et al.  A global water scarcity assessment under Shared Socio-economic Pathways – Part 2: Water availability and scarcity , 2012 .

[2]  S. Manabe.  CLIMATE AND THE OCEAN CIRCULATION1 , 1969 .

[3]  Naota Hanasaki,et al.  A seawater desalination scheme for global hydrological models , 2016 .

[4]  W. Lucht,et al.  Agricultural green and blue water consumption and its influence on the global water system , 2008 .

[5]  Dennis P. Lettenmaier,et al.  Effects of irrigation on the water and energy balances of the Colorado and Mekong river basins , 2006 .

[6]  H. Velthuizen,et al.  Harmonized World Soil Database (version 1.2) , 2008 .

[7]  Zong-Liang Yang,et al.  Development of a simple groundwater model for use in climate models and evaluation with Gravity Recovery and Climate Experiment data , 2007 .

[8]  P. Döll,et al.  Global‐scale assessment of groundwater depletion and related groundwater abstractions: Combining hydrological modeling with information from well observations and GRACE satellites , 2014 .

[9]  E. S. Melnikov,et al.  Circum-Arctic map of permafrost and ground-ice conditions , 1997 .

[10]  B. Scanlon,et al.  Impact of water withdrawals from groundwater and surface water on continental water storage variations , 2012 .

[11]  S. Kanae,et al.  Global Hydrological Cycles and World Water Resources , 2006, Science.

[12]  Taikan Oki,et al.  Assessment of Annual Runoff from Land Surface Models Using Total Runoff Integrating Pathways (TRIP) , 1999 .

[13]  Naota Hanasaki,et al.  Incorporating anthropogenic water regulation modules into a land surface model , 2012 .

[14]  G. Balsamo,et al.  The WFDEI Meteorological Forcing Data , 2018 .

[15]  Sujan Koirala,et al.  Global‐scale land surface hydrologic modeling with the representation of water table dynamics , 2014 .

[16]  S. Kanae,et al.  An integrated model for the assessment of global water resources – Part 1: Model description and input meteorological forcing , 2008 .

[17]  N. Hanasaki.  Estimating Virtual Water Contents Using a Global Hydrological Model , 2016 .

[18]  P. Döll,et al.  A global hydrological model for deriving water availability indicators: model tuning and validation , 2003 .

[19]  S. Kanae,et al.  Global assessment of current water resources using total runoff integrating pathways , 2001 .

[20]  M. Bierkens,et al.  Global modeling of withdrawal, allocation and consumptive use of surface water and groundwater resources , 2013 .

[21]  Wolfgang Lucht,et al.  Water savings potentials of irrigation systems:: global simulation of processes and linkages , 2015 .

[22]  Naota Hanasaki,et al.  Assessing the impacts of reservoir operation to floodplain inundation by combining hydrological, reservoir management, and hydrodynamic models , 2014 .

[23]  Naota Hanasaki,et al.  A global water scarcity assessment under Shared Socio-economic Pathways – Part 1: Water use , 2012 .

[24]  P. Döll,et al.  Sensitivity of simulated global-scale freshwater fluxes and storages to input data, hydrological model structure, human water use and calibration , 2014 .

[25]  Y. Xue,et al.  Use of midlatitude soil moisture and meteorological observations to validate soil moisture simulations with biosphere and bucket models , 1995 .

[26]  Pat Jen-Feng Yeh,et al.  Representation of water table dynamics in a land surface scheme : observations, models, and analyses , 2003 .

[27]  Petra Döll,et al.  Global modeling of irrigation water requirements , 2002 .

[28]  Petra Döll,et al.  A global data set of the extent of irrigated land from 1900 to 2005 , 2014 .

[29]  Luis Samaniego,et al.  Cross‐scale intercomparison of climate change impacts simulated by regional and global hydrological models in eleven large river basins , 2017, Climatic Change.

[30]  Naota Hanasaki,et al.  A quasi-real-time hydrological simulation of the Chao Phraya River using meteorological data from the Thai Meteorological Department Automatic Weather Stations , 2014 .

[31]  Changsheng Li,et al.  Bi-criteria evaluation of the MIKE SHE model for a forested watershed on the South Carolina coastal plain , 2010 .

[32]  G. Balsamo,et al.  The WFDEI meteorological forcing data set: WATCH Forcing Data methodology applied to ERA‐Interim reanalysis data , 2014 .

[33]  Naota Hanasaki,et al.  Evolution of the global virtual water trade network , 2012, Proceedings of the National Academy of Sciences.

[34]  E. S. Melnikov,et al.  Circum-Arctic map of permafrost and ground-ice conditions. Washington, DC: U.S. Geological Survey in Cooperation with the Circum-Pacific Council for Energy and Mineral Resources. Circum-Pacific Map Series CP-45, scale 1:10,000,000, 1 sheet. , 1997 .

[35]  Felipe J. Colón-González,et al.  Multimodel assessment of water scarcity under climate change , 2013, Proceedings of the National Academy of Sciences.

[36]  Elfatih A. B. Eltahir,et al.  Representation of Water Table Dynamics in a Land Surface Scheme. Part I: Model Development , 2005 .

[37]  Yoshihide Wada,et al.  High‐resolution modeling of human and climate impacts on global water resources , 2013 .

[38]  P. Döll,et al.  Groundwater use for irrigation - a global inventory , 2010 .

[39]  Sandra Postel,et al.  Pillar of Sand: Can the Irrigation Miracle Last? , 1999 .

[40]  L. Konikow.  Contribution of global groundwater depletion since 1900 to sea‐level rise , 2011 .

[41]  Petra Döll,et al.  Global-scale modeling of glacier mass balances for water resources assessments: Glacier mass changes between 1948 and 2006 , 2010 .

[42]  P. Döll,et al.  High‐resolution mapping of the world's reservoirs and dams for sustainable river‐flow management , 2011 .

[43]  Sun Bo,et al.  The effects of sediment-laden waters on irrigated lands along the lower Yellow River in China. , 2007, Journal of environmental management.

[44]  Howard S. Wheater,et al.  On inclusion of water resource management in Earth system models - Part 2: Representation of water supply and allocation and opportunities for improved modeling , 2014 .

[45]  E. Rastetter,et al.  Continental scale models of water balance and fluvial transport: An application to South America , 1989 .

[46]  Raquel V. Francisco,et al.  Uncertainties in regional climate change prediction: a regional analysis of ensemble simulations with the HADCM2 coupled AOGCM , 2000 .

[47]  P. Döll,et al.  Development and testing of the WaterGAP 2 global model of water use and availability , 2003 .

[48]  F. Landerer,et al.  Accuracy of scaled GRACE terrestrial water storage estimates , 2012 .

[49]  Aditya Sood,et al.  Global hydrological models: a review , 2015 .

[50]  N. Ramankutty,et al.  Farming the planet: 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000 , 2008 .

[51]  Petra Döll,et al.  Global-scale analysis of river flow alterations due to water withdrawals and reservoirs , 2009 .

[52]  L. A. Richards.  Capillary conduction of liquids through porous mediums , 1931 .

[53]  Y. Wada.  Modeling Groundwater Depletion at Regional and Global Scales: Present State and Future Prospects , 2016, Surveys in Geophysics.

[54]  Zaigham Habib,et al.  Spatial distribution of reference and potential evapotranspiration across the Indus Basin Irrigation Systems , 2001 .

[55]  N. Hanasaki,et al.  Model study of the impacts of future climate change on the hydrology of Ganges–Brahmaputra–Meghna basin , 2014 .

[56]  M. Bierkens,et al.  Global depletion of groundwater resources , 2010 .

[57]  Petra Döll,et al.  Development and validation of the global map of irrigation areas , 2005 .

[58]  T. Oki,et al.  Multimodel Estimate of the Global Terrestrial Water Balance: Setup and First Results , 2011 .

[59]  P. Döll,et al.  Global-scale modeling of groundwater recharge , 2008 .

[60]  I. Shiklomanov.  Appraisal and Assessment of World Water Resources , 2000 .

[61]  Ying Fan,et al.  Incorporating water table dynamics in climate modeling: 1. Water table observations and equilibrium water table simulations , 2007 .

[62]  R. Levy.  An Integrated Model , 2016 .

[63]  Naota Hanasaki,et al.  A reservoir operation scheme for global river routing models , 2006 .

[64]  K. Verdin,et al.  New Global Hydrography Derived From Spaceborne Elevation Data , 2008 .

[65]  Naota Hanasaki,et al.  GSWP-2 Multimodel Analysis and Implications for Our Perception of the Land Surface , 2006 .

[66]  Rolf Weingartner,et al.  Global monthly water stress: 2. Water demand and severity of water stress , 2011 .

[67]  S. Kanae,et al.  An integrated model for the assessment of global water resources – Part 2: Applications and assessments , 2008 .

[68]  S. Kanae,et al.  Model estimates of sea-level change due to anthropogenic impacts on terrestrial water storage , 2012 .

[69]  F. Ludwig,et al.  Global water resources affected by human interventions and climate change , 2013, Proceedings of the National Academy of Sciences.

[70]  E. Feitelson,et al.  Desalination, space and power: The ramifications of Israel's changing water geography , 2012 .

[71]  S. Kanae,et al.  Incorporation of groundwater pumping in a global Land Surface Model with the representation of human impacts , 2015 .

[72]  Naota Hanasaki,et al.  An estimation of global virtual water flow and sources of water withdrawal for major crops and livestock products using a global hydrological model , 2010 .

[73]  J. Nash,et al.  River flow forecasting through conceptual models part I — A discussion of principles☆ , 1970 .

[74]  J. Gun,et al.  Groundwater around the World: A Geographic Synopsis , 2013 .

[75]  W. Lucht,et al.  Terrestrial vegetation and water balance-hydrological evaluation of a dynamic global vegetation model , 2004 .

[76]  M. Bierkens,et al.  Global monthly water stress: 1. Water balance and water availability , 2011 .

[77]  Marc F. P. Bierkens,et al.  Global hydrology 2015: State, trends, and directions , 2015 .

[78]  Z. Habib,et al.  Spatial distribution of reference and potential evapotranspiration: a study across indus basin irrigation systems. , 2001 .

[79]  H. Wheater,et al.  On inclusion of water resource management in Earth system models – Part 1: Problem definition and representation of water demand , 2014 .

[80]  Noreddine Ghaffour,et al.  Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability , 2013 .

[81]  F. Ludwig,et al.  Impact of reservoirs on river discharge and irrigation water supply during the 20th century , 2011 .

[82]  Martina Flörke,et al.  Domestic and industrial water uses of the past 60 years as a mirror of socio-economic development: A global simulation study , 2013 .

[83]  Hyungjun Kim,et al.  Recent progresses in incorporating human land–water management into global land surface models toward their integration into Earth system models , 2016 .