Mohamad Hejazi

ORCID: 0000-0003-4194-2208
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About
Contact & Profiles
Research Areas
  • Water-Energy-Food Nexus Studies
  • Water resources management and optimization
  • Hydrology and Watershed Management Studies
  • Energy and Environment Impacts
  • Environmental Impact and Sustainability
  • Climate Change Policy and Economics
  • Hydrology and Drought Analysis
  • Integrated Energy Systems Optimization
  • Reservoir Engineering and Simulation Methods
  • Flood Risk Assessment and Management
  • Climate variability and models
  • Global Energy and Sustainability Research
  • Atmospheric and Environmental Gas Dynamics
  • Global Energy Security and Policy
  • Energy, Environment, and Transportation Policies
  • Hydrological Forecasting Using AI
  • Photovoltaic Systems and Sustainability
  • Hybrid Renewable Energy Systems
  • Transboundary Water Resource Management
  • Climate change impacts on agriculture
  • Hydrocarbon exploration and reservoir analysis
  • Geophysics and Gravity Measurements
  • Fish Ecology and Management Studies
  • demographic modeling and climate adaptation
  • Land Use and Ecosystem Services

King Abdullah Petroleum Studies and Research Center
2021-2024

Kerman University of Medical Sciences
2024

Joint Global Change Research Institute
2014-2023

Pacific Northwest National Laboratory
2014-2023

University of Maryland, College Park
2010-2022

University Research Co (United States)
2013-2022

Near East University
2021

Johns Hopkins University
2020

Earth System Science Interdisciplinary Center
2017-2019

Inter-American Development Bank
2018

Both climate change and human activities are known to have induced changes hydrology. Consequently, quantifying the net impact of contribution streamflow is a challenge. In this paper, decomposition method based on Budyko hypothesis used quantify (i.e., precipitation potential evaporation change) direct mean annual (MAS) for 413 watersheds in contiguous United States. The data precipitation, runoff, obtained from international Model Parameter Estimation Experiment (MOPEX), which often...

10.1029/2010wr010283 article EN Water Resources Research 2011-08-05

Water scarcity is dynamic and complex, emerging from the combined influences of climate change, basin-level water resources, managed systems' adaptive capacities. Beyond geophysical stressors responses, it critical to also consider how multi-sector, multi-scale economic teleconnections mitigate or exacerbate shortages. Here, we contribute a global-to-basin-scale exploratory analysis potential impacts by linking global human-Earth system model, hydrologic metric for loss surplus due resource...

10.1038/s41467-021-22194-0 article EN cc-by Nature Communications 2021-03-26

Abstract. This paper describes GCAM v5.1, an open source model that represents the linkages between energy, water, land, climate, and economic systems. is a market equilibrium model, global in scope, operates from 1990 to 2100 5-year time steps. It can be used examine, for example, how changes population, income, or technology cost might alter crop production, energy demand, water withdrawals, one region's demand affect land other regions. including its assumptions, inputs, outputs. We then...

10.5194/gmd-12-677-2019 article EN cc-by Geoscientific model development 2019-02-15

A rapid and deep decarbonization of power supply worldwide is required to limit global warming well below 2 °C. Beyond greenhouse gas emissions, the sector also responsible for numerous other environmental impacts. Here we combine scenarios from integrated assessment models with a forward-looking life-cycle explore how alternative technology choices in pathways compare terms non-climate impacts at system level. While all yield major co-benefits, find that scale co-benefits as profiles...

10.1038/s41467-019-13067-8 article EN cc-by Nature Communications 2019-11-19

Abstract. Human water withdrawal has increasingly altered the global cycle in past decades, yet our understanding of its driving forces and patterns is limited. Reported historical estimates sectoral withdrawals are often sparse incomplete, mainly restricted to available at annual country scales, due a lack observations seasonal local scales. In this study, through collecting consolidating various sources reported data developing spatial temporal statistical downscaling algorithms, we...

10.5194/hess-22-2117-2018 article EN cc-by Hydrology and earth system sciences 2018-04-06

Abstract Global future land use (LU) is an important input for Earth system models projecting dynamics and critical many modeling studies on global change. Here we generated a new gridded LU dataset using the Change Analysis Model (GCAM) spatial downscaling model, named Demeter, under five Shared Socioeconomic Pathways (SSPs) four Representative Concentration (RCPs) scenarios. Compared to existing similar datasets, presented has higher resolution (0.05° × 0.05°) spreads more comprehensive...

10.1038/s41597-020-00669-x article EN cc-by Scientific Data 2020-10-02

This paper investigates the impact of climate change on drought by addressing two questions: (1) How reliable is assessment based state‐of‐the‐art projections and downscaling techniques? (2) Will be at same level from meteorological, agricultural, hydrologic perspectives? Regional dynamical through regional models (RCMs) are used to assess frequency, intensity, duration, propagation meteorological agricultural hydrological systems. The a index (standardized precipitation index, SPI) first...

10.1029/2010wr009845 article EN Water Resources Research 2011-08-11

Significance Devising sustainable climate change mitigation policies with attention to potential synergies and constraints within the climate–energy–water nexus is subject of ongoing integrated modeling efforts. This study employs a regional assessment model Earth system at high spatial temporal resolutions in Unites States compare implications two representative concentration pathways under consistent socioeconomics. The results clearly show, for first time our knowledge, that policies, if...

10.1073/pnas.1421675112 article EN Proceedings of the National Academy of Sciences 2015-08-03

This study provides the first comprehensive quantification of global hydropower potential including gross, technical, economic, and exploitable estimates.

10.1039/c5ee00888c article EN Energy & Environmental Science 2015-01-01

Abstract Future rates of global groundwater depletion will depend on the economic and environmental viability extracting water from increasingly stressed aquifers. Here we analyze by considering these factors explicitly. Global gridded availability extraction cost data are aggregated to produce nonrenewable resource supply curves for 235 major river basins geopolitical regions. These resources then exposed dynamically generated demands in a fully coupled, multisectoral, simulation. As head...

10.1029/2018ef001105 article EN cc-by-nc-nd Earth s Future 2019-01-28

Despite significant effort to quantify the interdependence of water and energy sectors, global requirements for (E4W) are still poorly understood, which may result in biases projections consequently management policy. This study estimates water-related consumption by source, sector, process 14 regions from 1973 2012. Globally, E4W amounted 10.2 EJ primary 2010, accounting 1.7%-2.7% total consumption, 58% pertains fresh surface water, 30% groundwater, 12% nonfresh assuming median intensity...

10.1021/acs.est.6b01065 article EN Environmental Science & Technology 2016-08-02

Water stressed regions rely heavily on the import of water-intensive goods to offset insufficient food production driven by socioeconomic and environmental factors. The water embedded in these traded commodities, virtual water, has received increasing interest scientific community. However, comprehensive future projections trading remain absent. Here we show, for first time, changes over 21st century amount various types required meet international agricultural demands. Accounting evolution...

10.1038/s41467-020-17400-4 article EN cc-by Nature Communications 2020-07-20

Abstract Long term, global records of urban extent can help evaluate environmental impacts anthropogenic activities. Remotely sensed observations provide insights into historical dynamics, but only during the satellite era. Here, we develop a 1 km resolution dataset annual dynamics between 1870 and 2100 using an cellular automata model trained on 1992 2013. Hindcast (1870–1990) projected (2020–2100) under five Shared Socioeconomic Pathways (SSPs) were modeled. We find that growth SSP5,...

10.1038/s43247-021-00273-w article EN cc-by Communications Earth & Environment 2021-09-29

Abstract Future changes in climate and socioeconomic systems will drive both the availability use of water resources, leading to evolutions scarcity. The contributions can be quantified individually understand impacts around world, but also combined explore how coevolution energy-water-land affects not only driver behind scarcity changes, human interact tandem alter Here we investigate relative on under Shared Socioeconomic Pathways-Representative Concentration Pathways framework. While...

10.1088/1748-9326/ab639b article EN cc-by Environmental Research Letters 2019-12-18
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