• سیاستگذاریهای اقتصادی و مالی در حوزههای فوقالذکر در سطوح ملی، منطقهای و جهانی
Hamid Amadeh; Alireza Moghaddam; Morteza Khorsandi
Abstract
This study examined the impacts of economic policy uncertainty and oil price on carbon dioxide emissions as a criterion of environmental quality in seven OPEC member countries from 1990 until 2019. According to the theoretical framework, economic policy uncertainty can directly or indirectly affect the ...
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This study examined the impacts of economic policy uncertainty and oil price on carbon dioxide emissions as a criterion of environmental quality in seven OPEC member countries from 1990 until 2019. According to the theoretical framework, economic policy uncertainty can directly or indirectly affect the quality of the environment, such as through direct policy adjustment, consumption, and investment channels. In this regard, with the help of panel data, the experimental models of this study were estimated and evaluated by the Fully-modified Ordinary Least Squares (FMOLS) method. The results indicate that the economic policy uncertainty and the oil price variables are statistically significant in both models, and their coefficient is positive. In other words, higher policy-related economic uncertainty and oil price over this period has led to higher carbon dioxide emissions and, thus, lower environmental quality in OPEC member countries. Ultimately, the estimates in the second model confirm an inverse U-shaped relationship between economic growth and the quality of the environment of these countries in the mentioned period, based on the Environmental Kuznets Curve (EKC) hypothesis.
• مطالعات اقتصادی مرتبط با حاملهای انرژی (فسیلی، تجدیدپذیر و برق)
Ghazaleh Khanzadeh Kanzagh; Saiab Mamipoor; Mahdi Ghaemi asl; Hossein Hafezi
Abstract
Economic uncertainty influences key economic variables, particularly energy commodity prices, leading to volatility and economic instability. Each energy commodity has unique characteristics affecting its price behavior. This study examines the dynamic relationship between global economic policy uncertainty ...
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Economic uncertainty influences key economic variables, particularly energy commodity prices, leading to volatility and economic instability. Each energy commodity has unique characteristics affecting its price behavior. This study examines the dynamic relationship between global economic policy uncertainty (GEPU) and energy commodity prices using the LA-VAR model.Findings indicate that the impact of GEPU on Brent oil, natural gas, and coal prices varies based on the nature of crises and the level of uncertainty. Before the 2008 financial crisis, GEPU significantly influenced oil price changes, but this relationship weakened or reversed afterward. Additionally, price fluctuations in energy commodities contributed to increases in GEPU, particularly during the 2008 crisis and the COVID-19 pandemic—periods when energy prices reached extreme highs and lows.The study identifies a causal link between energy commodity prices and GEPU during the 2008 financial crisis, while during the COVID-19 pandemic, this link was specifically between Brent crude oil prices and GEPU. These findings suggest that sudden energy price fluctuations, especially in times of crisis, contribute to increased global economic policy uncertainty. Moreover, price increases in energy commodities have a stronger impact on GEPU than price decreases.
