Tipping Points Toward Urban Pollution Advantage? Scaling of Carbon Dioxide Emissions in the US Urban Areas

This study examined the relationship among carbon dioxide emissions and linkage effects using Input–Output (IO) data of the information and communications technology (ICT) industry between South Korea and the USA. As we wanted to find out if the ICT industry, which the world is passionate about, is a sustainable industry. The linkage effects are analyzed to determine the impact of ICT industry on the national economy, and CO₂ emissions of the industry are analyzed to determine how much influence it has on air pollution. In addition, we classify ICT industry by ICT service and manufacturing industries as the key industries in Korea and the US. Data were collected from OECD ranging from 2006 to 2015 in order to quantitatively estimate backward linkage, forward linkage effect, and carbon dioxide emissions. The results indicated that ICT manufacturing industry in Korea has high backward and forward linkage effects. CO₂ emissions from ICT service is more than from ICT manufacturing in both Korea and the US. We wanted to find out if the ICT industry, which the world is passionate about, is a sustainable industry. As a contribution, ICT manufacturing and service industries in Korea and the United States are directly compared, and CO₂ emissions over 10 years are analyzed in a time series.

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Carbon dioxide emissions are down in the US as fracking increases

Physics Today ◽

10.1063/pt.5.1072 ◽

2016 ◽

Keyword(s):

Carbon Dioxide ◽

Carbon Dioxide Emissions ◽

The Us

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New approaches to the development of construction technologies

E3S Web of Conferences ◽

10.1051/e3sconf/202124701014 ◽

2021 ◽

Vol 247 ◽

pp. 01014

Author(s):

Sergey Zolotukhin ◽

Olga Kukina ◽

Ekaterina Artemova ◽

Andrey Eremin ◽

Vladimir Volokitin ◽

...

Keyword(s):

Carbon Dioxide ◽

Urban Areas ◽

Carbon Dioxide Emissions ◽

Scrap Metal ◽

Building Structures ◽

Stone Materials ◽

Dead End ◽

Long Time ◽

Repeated Use ◽

Favorable Temperature

The paper presents data on the volume of materials consumed by builders and the carbon dioxide emissions that occur during this process. The reasons for the formation and volume of construction debris are considered. Recycling technologies currently used in the demolition of buildings are associated with crushing. The resulting concrete mix is used only for filling low-level earthworks due to the rapid carbonation of concrete surfaces. The scrap metal formed during crushing is used for remelting, polluting the atmosphere and requiring a large amount of energy. It is proved that due to the low economic and environmental efficiency, this method of recycling is a dead end. Studies have found that the constant increase in the strength of concrete and the absence of a decrease in the strength characteristics of reinforcing steels, stone materials, bricks, which are operated for a long time in favorable temperature and humidity conditions, allows them to be reused. General approaches have been developed that require changes in the existing technologies for the renovation of urban areas, the demolition of individual buildings and structures that currently exist. To reduce CO2 emissions and construction debris, it is enough to increase the volume of gentrification, reconstruction, major repairs, and re-profiling of the existing residential and industrial stock. When demolishing buildings, it is necessary to abandon the method of collapse of building structures with their further fragmentation. The method of piecemeal dismantling with repeated use of materials, products and structures (after determining their strength indicators by specialists), allows you to dramatically reduce the problems of construction debris and carbon dioxide emissions.

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Factors Leading to Increased Carbon Dioxide Emissions of the APEC Countries: the LMDI Decomposition Analysis

The Singapore Economic Review ◽

10.1142/s0217590820500125 ◽

2020 ◽

pp. 1-20

Author(s):

Yu-Fang Chang ◽

Bwo-Nung Huang

Keyword(s):

Carbon Dioxide ◽

Carbon Dioxide Emissions ◽

Energy Intensity ◽

Decomposition Analysis ◽

Substitution Effect ◽

The Philippines ◽

Population Increase ◽

Intensity Effect ◽

Energy Substitution ◽

The Us

This paper explores the factors that lead to increased carbon dioxide emissions in the 18 countries of the APEC. We apply the LMDI multiplicative decomposing method to 18 countries between 1971 and 2012. We summarize these factors that are as follows: (1) population increase and economic growth play a key role in increased carbon dioxide emissions. (2) All the 18 countries of the APEC have improved their energy efficiency as manifested in the change of energy intensity ([Formula: see text]), which is less than 1 in the 42 years; (3) In terms of energy substitution effect ([Formula: see text]) and fuel coefficient effect ([Formula: see text]), the decomposition results point out that Hong Kong, Indonesia, and Malaysia witnessed growth in [Formula: see text] and [Formula: see text], indicating the only factor to reduce the emissions for these three countries is intensity effect, which gives rise to relatively higher emission for these three countries during the period. In the case of Peru, the Philippines, Singapore, Thailand, and Vietnam, we witnessed increases in [Formula: see text], but decreases in [Formula: see text]; In the case of Australia, Canada, Chile, China, Japan, South Korea, Mexico, New Zealand, Taiwan, and the US, there seem to decrease in [Formula: see text], but increases in [Formula: see text] during the 42-year period.

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