Environmental Economics
Marzieh Haghshenas; Rozita Moayedfar; Alimorad Sharifi; Shekoofeh Farahmand
Abstract
The Earth's temperature has climbed by 0.7 degrees Celsius (°C) during the last 100 years, and the worldwide average temperature is expected to rise between 1.8 and 6.4 degrees °C by 2100. Climate change, particularly rising temperatures, according to IPCC , the Middle East and North Africa (MENA) ...
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The Earth's temperature has climbed by 0.7 degrees Celsius (°C) during the last 100 years, and the worldwide average temperature is expected to rise between 1.8 and 6.4 degrees °C by 2100. Climate change, particularly rising temperatures, according to IPCC , the Middle East and North Africa (MENA) area will face challenges throughout the twenty-first century. As a result, the study's aims are to evaluate the impact of policies which eliminate or targetize fossil fuel subsidies in order to reduce global warming, as well as the impact of these policies on economic variables (GDP, consumption, capital accumulation, employment, and environmental impact) in the MENA until 2100. For this purpose, a Dynamic Regional Integrated Climate-Economy Model (RICE) is utilized to do this. The findings suggest that in the long run, if no strategy to limit temperature rise is enacted and carbon subsidies persist, the average world temperature would rise by 4.74 degrees °C, while an optimal policy based on fossil fuel taxation will increase the average global temperature by 4.49 °C, and a policy reforming fossil fuel subsidies will increase the average global temperature by 4.24 °C. Generally, carbon tax measures in the MENA area will lower average world temperature increase by 0.5°C compared to other scenarios.
Environmental Economics
Mehran Zarei; Zahra Nasrollahi
Abstract
The article is grounded on the rapid demand growth and supply constraints, which have imposed unprecedented pressure on water resources in Iran. Virtual water import has been recently discussed as a policy to tackle water scarcity and so the study calculates (with input-output technique) virtual water ...
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The article is grounded on the rapid demand growth and supply constraints, which have imposed unprecedented pressure on water resources in Iran. Virtual water import has been recently discussed as a policy to tackle water scarcity and so the study calculates (with input-output technique) virtual water flows between Iran and European Union (EU 28) in 2011. The results show that Iran has been a net importer of virtual water in trade with the EU28, with net imports of about 667 million m3. The largest Virtual Water Export from Iran to the EU28 are respectively to Germany, Spain and Italy, which accounted for more than 74% of the total virtual water exports. By contrast, the Netherlands, Germany and Austria have been the largest virtual water exporters to Iran, with a total share of over 68.8% of the total. In any case, while Iran's virtual water import from the EU28 is about 2 times as much as virtual water exports, the value of Iran's imports from the EU28 is more than 7.6 times of its exports. An indicator developed shows that Iran's exports to the EU are high water-intensive but Iran's imports from the European Union are low water intensive.
Environmental Economics
Mohammad Nabi Shahiki Tash; Mostafa khajehhasani; Morteza Yaqubi
Abstract
Monopoly and negative externalities are two aspects of market failure that affect the market performance. This study extends the Leibenstein approach, a framework to measure the market performance, which evaluates the social welfare costs of market power and environmental inefficiency. To assess the ...
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Monopoly and negative externalities are two aspects of market failure that affect the market performance. This study extends the Leibenstein approach, a framework to measure the market performance, which evaluates the social welfare costs of market power and environmental inefficiency. To assess the deadweight loss, we capture pollution impacts, on the market performance in an imperfect competition. In doing so, we assess marginal costs and price elasticity of demand by a Translog function, market power by Herfindahl-Hirschman and Lerner indices, and environmental inefficiency by directional distance functions, at a Cournot competition for Iran’s energy-intensive industries at the four-digit ISIC level. Our results demonstrate that the social welfare costs of welfare triangle and economic rent are negligible and include a small amount of welfare costs. Non-ferrous foundry imposes the lowest social cost (1.03% of its production value), and cement, lime and gypsum industries impose the highest social cost (50.7% of their production value). Those industries with more market power pay less attention to the environment. In polluting industries, welfare loss, due to market power, is relatively negligible. However, relatively high cost of social welfare, due to environmental inefficiency, indicates the necessity of levying a green tax to reduce the adverse effects.
