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Emissions and climate change
The extreme socioeconomic consequences of climate change have brought fossil fuel emissions and mitigation and adaptation efforts to the fore in both national and international policy making. Emissions are correlated with the volume of activity and production of a country and PPP-based GDP growth is identified as a major driver of increasing emissions. The indicator CO2 emissions per unit of value added is used to measure progress towards Sustainable Development Goal (SDG) target 9.4, which looks to upgrade infrastructure and retrofit industries to make them sustainable, with increased resource-use efficiency and greater adoption of clean and environmentally sound technologies and industrial processes. When calculated at the level of the whole economy, PPP-based GDP is used as the denominator and the measure reflects the effects of the average carbon intensity of the energy mix, the structure of an economy, and the average efficiency in the use of energy.Measuring GDP in constant 2017 PPP terms allows an examination of the change in emission intensity over time. Figure 8.2 shows changes by income group since 2001.
Uses and limitations of Purchasing Power Parities
Chapter 1: The size of the economy and price levels
Chapter 2: Poverty and inequality
Chapter 3: Trade and competitiveness
Chapter 4: Labor costs, wages, and social safety nets
Chapter 5: Food and nutrition
Chapter 6: Health
Chapter 7: Education
Chapter 8: Energy and climate
Chapter 9: Infrastructure
Chapter 10: Human Development
Chapter 11: Administrative uses
Technical note