scholarly journals California’s Food-Energy-Water System: An Open Source Simulation Model of Adaptive Surface and Groundwater Management in the Central Valley

2021 ◽  
pp. 105052
Author(s):  
Harrison B. Zeff ◽  
Andrew L. Hamilton ◽  
Keyvan Malek ◽  
Jonathan D. Herman ◽  
Jonathan S. Cohen ◽  
...  
Keyword(s):  
Simulation Model ◽  
Open Source ◽  
Groundwater Management ◽  
Water System ◽  
Central Valley ◽  
Food Energy ◽  
Surface And Groundwater

scholarly journals California’s Food-Energy-Water System: An Open Source Simulation Model of Adaptive Surface and Groundwater Management in the Central Valley

2020 ◽  
Author(s):  
Harrison Zeff ◽  
Andrew L. Hamilton ◽  
Keyvan Malek ◽  
Jonathan Herman ◽  
Jonathan Cohen ◽  
...  
Keyword(s):  
Simulation Model ◽  
Integrated Management ◽  
Management Strategies ◽  
Water System ◽  
Central Valley ◽  
Food Energy ◽  
Production Models ◽  
State Water ◽  
Coordinated Water ◽  
Surface And Groundwater

This study introduces the California Food-Energy-Water System (CALFEWS) simulation model to describe the integrated, multi-sector dynamics that emerge from the coordinated management of surface and groundwater supplies throughout California’s Central Valley. The CALFEWS simulation framework links the operation of state-wide, interbasin transfer projects (i.e., State Water Project, Central Valley Project) with coordinated water management strategies abstracted to the scale of irrigation/water districts. This study contributes a historic baseline (October 1996 – September 2016) evaluation of the model’s performance against observations, including reservoir storage, inter-basin transfers, environmental endpoints, and groundwater banking accounts. State-aware, rules-based representations of critical component systems enable CALFEWS to simulate adaptive management responses to alternative climate, infrastructure, and regulatory scenarios. Moreover, CALFEWS has been designed to maintain interoperability with electric power dispatch and agricultural production models. As such, CALFEWS provides a platform to evaluate internally consistent scenarios for the integrated management of water supply, energy generation, and food production.

scholarly journals Modelling nutrient flows in a simplified local food-energy-water system

2018 ◽  
Vol 133 ◽  
pp. 343-353 ◽  
Author(s):  
Yuxi Yao ◽  
Elias Martinez-Hernandez ◽  
Aidong Yang
Keyword(s):  
Local Food ◽  
Water System ◽  
Food Energy ◽  
Nutrient Flows

Effects of urbanization on food-energy-water systems in mega-urban regions: a case study of the Bohai MUR, China

2020 ◽  
Author(s):  
Caiyun Deng ◽  
Hongrui Wang ◽  
Shuxin Gong ◽  
Jie Zhang ◽  
Bo Yang ◽  
...  
Keyword(s):  
Urban Areas ◽  
Water System ◽  
Energy System ◽  
Water Systems ◽  
Stress Index ◽  
Food Energy ◽  
Urban Regions ◽  
System Pressure ◽  
Impact Of Urbanization ◽  
The Impact

<p>The security of food-energy-water systems (FEW systems) is an issue of worldwide concern, especially in mega-urban regions (MURs) with high-density populations, industries and carbon emissions. To better understand the hidden linkages between urbanization and FEW systems, the pressure on FEW systems is quantified in a typical rapid urbanizing region—the Bohai MUR. The correlation between urbanization indicators and the pressure on FEW systems is analyzed and the mechanism of the impact of urbanization on FEW systems is further investigated. Results show that approximately 23% of croplands is lost, 61% of which is converted to construction lands and the urban areas expand by 132.2% in the Bohai MUR during 1980-2015. The pressure on FEW systems has an upward trend with the stress index of the pressure on FEW systems (FEW_SI) exhibiting ranging from 80.49 to 134.82% and dominant pressure consisting of that has converted from water system pressure to energy system pressure since 2004. The FEW_SI in the Bohai MUR is enhanced with cropland loss and the increase in urbanization indicators. Additionally, land use, populations, incomes, policies and innovation are the main ways urbanization impacted FEW systems in MURs. This study enhances our understanding of the pressure variation on FEW systems in MURs and the effects of urbanization on FEW systems, which helps stakeholders to enhance the resilience of FEW systems and promote sustainable regional development.</p><p><strong>Keywords:</strong> urbanization, food-energy-water system pressure, linkages, MURs</p>

scholarly journals Mapping river recharge rates with stable isotopes and tritium-helium groundwater ages

2021 ◽  
Author(s):  
Ate Visser ◽  
Laura Foglia ◽  
Helen Dahlke ◽  
Amelia Vankeuren ◽  
Maribeth Kniffin ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Groundwater Management ◽  
River Water ◽  
Central Valley ◽  
Shallow Aquifer ◽  
River Bank ◽  
Cosumnes River ◽  
Water Recharge ◽  
Groundwater Basin ◽  
Recharge Rates

<p>While climate change will challenge the future of California’s water resources, groundwater can buffer variability in precipitation and streamflow, if managed sustainably. Enhanced river recharge is an important tool to reach sustainable groundwater management in the California Central Valley (USA). Understanding and predicting recharge rates of river water, either natural river bank infiltration or managed aquifer recharge (MAR) during floods (Flood-MAR) or on agricultural land (Ag-MAR) is essential to evaluate the sustainability of groundwater management plans. Groundwater ages, combined with other isotopic and noble gas evidence, can elucidate surface water-groundwater interactions and support river recharge rates calculations over longer time periods.</p><p>Our study is focused on the recharge from the Cosumnes River in the California Central Valley. The Cosumnes River forms the boundary between the Sacramento Valley groundwater basin to the north and the San Joaquin Valley groundwater basin to the south. For this study, 28 new samples were collected for the analysis of 3H/3He age, noble gases, and stable isotopes. 25 additional samples from the California Waterboards Groundwater Ambient Monitoring and Assessment (GAMA) Shallow Aquifer Assessment program were included, which were collected and analyzed by the USGS California Water Science Center in 2017.</p><p>We find that 28% of groundwater in the San Joaquin – Cosumnes groundwater subbasin originated as river water recharge, based on the interpolated mean δ<sup>18</sup>O (7.7 ‰ ), compared with river water (-9 ‰) and local precipitation recharge (-7 ‰) end-members. River water is a source of modern recharge, resulting in high tritium concentrations close to the Cosumnes River. In contrast, ambient groundwater from local precipitation recharge is predominantly pre-modern or fossil, containing less than 1 pCi/L tritium. Combining groundwater ages with the distance to the river, aquifer thickness, and porosity, estimates of river water recharge rate vary between 0.02 km<sup>3</sup>/yr and 0.035 km<sup>3</sup>/yr. These quantitative estimates of river water recharge will constrain the numerical groundwater flow model for this basin and aid groundwater managers in developing sustainability plans to balance groundwater pumping with recharge rates.</p>

A novel simulation model for the development process of open source software projects

2002 ◽  
Vol 7 (3-4) ◽  
pp. 173-188 ◽  
Author(s):  
I. P. Antoniades ◽  
I. Stamelos ◽  
L. Angelis ◽  
G. L. Bleris
Keyword(s):  
Simulation Model ◽  
Open Source ◽  
Open Source Software ◽  
Development Process ◽  
Software Projects
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