
Dor Fridman- PhD
- Research scholar at International Institute for Applied Systems Analysis
Dor Fridman
- PhD
- Research scholar at International Institute for Applied Systems Analysis
Hydrologic and water resource modelling and simulation
About
12
Publications
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Introduction
Dor is a research scholar at IIASA, working on hydrological and water quality modeling, wastewater reclamation, alternative water sources, water security, and drought risk assessments.
Dor holds a PhD from the Department for Geography and Environmental Development at the Ben-Gurion University of the Negev, Israel. He is interested in studying the linkages between human and environmental complex systems, and exploring sustainable development pathways.
Current institution
Additional affiliations
March 2021 - March 2022
Publications
Publications (12)
Water scarcity is one of the most critical global environmental challenges. Addressing this challenge requires implementing economically-profitable and environmentally-sustainable water management interventions across scales globally. This study presents the development of the global version of the ECHO hydro-economic model (ECHO-Global version 1.0...
Wastewater treatment and reuse are increasingly perceived as essential to improve water use efficiency and increase water availability and reliability. Furthermore, wastewater has a significant impact on hydrological signals in urban watersheds. Hydrological modeling has developed over the last few decades to account for the human-water interface....
Water circles” are presented as flexible water cycle diagrams aggregating the flows through a system for a specific region and time period, categorized by flow type and organized by magnitude. Water circles for an entire system and separate storage components can be interpreted as water cycle speedometers and help compare and communicate different...
The supply of water, food, and energy in our global economy is highly interlinked. Virtual blue water embedded into internationally traded food crops has therefore been extensively researched in recent years. This study focuses on the often neglected energy needed to supply this blue irrigation water. It provides a globally applicable and spatially...
Maintaining food security and environmental integrity over time requires a transition towards sustainable food systems. This paper analyzes different dimensions of national food supply sustainability on a global scale. By focusing on four food staples: wheat, rice, maize, and soybeans, the analysis identifies production regions that are more or les...
The water use of societies results in multiple environmental and social impacts and is a fundamental component of sustainability. Correspondingly, water footprint studies have grown significantly in numbers over the last decade. However, these studies mostly account for the human appropriation of freshwater resources, while overlooking various alte...
Despite a growing number of national-scale ecosystem service (ES) assessments, few studies consider the impacts of ES use and consumption beyond national or regional boundaries. Interregional ES flows-ecosystem services "imported" from and "exported" to other countries-are rarely analyzed and their importance for global sustainability is little kno...
Promoting sustainability in today's world requires an understanding of the environmental burdens and social impacts of one region's consumption on other regions, both adjacent and remote. In recent years a growing body of research has quantified interregional flows of primary food crops and of embodied resources. However, most studies to date are l...
Abstract In an interconnected world, the ‘food system’ sustainability of any given region is increasingly dependent on ecosystem services originated from supporting regions in different parts of the world. However, commonly used research approaches, such as place based ecosystem service assessments and interregional biophysical accounting, have lim...
Questions
Questions (3)
Hello,
I am using MODFLOW 6 transient simulation and have the following listing file. I wonder about two of the outputs. See attached screenshot.
- What those STO-SS & STO-SY mean? Are these total available water in storage? is it change in storage? If so, what is the difference between in and out?
- What is the meaning of positive recharge in the recharge package (RCH) in the out section? I would have expected it to be equal to zero.
I will appreciate your response.
I have 24 sets of model results based on different inputs to 3 model parameters. Since all inputs are equally plausible, I am using the coefficient of variation to quantify uncertainties of the model.
I would like to estimate the relative contribution to that level of uncertainty of each model parameter. I have come across Sobol's main and total effects. Yet, a simulation is not required in my case, and I'm not sure how to apply this appraoch to my results. I will appreciate any recommendation.
I'm using the WIOD database to compute GHG emissions embodied in imports to Israel. While calulating the a-matrix (technical coefficients) I have to decide how to handle total ouputs with 0 value, e.g. sector P: households with employees, at most regions. That is in order to prevent NAN values, an to ensure Leontief Inverse can be computed.
Currently I assigned a relatively small values to those cells, i.e. 0.00000000001 Million USD, but I was wondering if it is indeed the correct way to handle it, or should I apply zeros to NAN values in the tecnical coefficient matrix?