Bronte Wells
Air pollution is a pressing global health and environmental issue, and it is a particular concern in Asia. In this region, air pollution is responsible for millions of premature deaths each year, and it poses a significant threat to the economy, food and water security, and climate systems. The sources of air pollution in Asia are varied, but the burning of fossil fuels and biomass for power generation, industry, and transport is a major contributor. As a result, substances such as methane and black carbon are released into the atmosphere, accelerating global warming. While existing policies have helped to reduce pollution, further action is needed to bring air quality to safe levels. This includes implementing stricter emission standards and transitioning to renewable energy sources and electric vehicles.
| Characteristics | Values |
|---|---|
| Number of people exposed to unsafe air | 2.5 billion |
| Percentage of people exposed to unsafe air | 90% |
| Number of countries in the region ranked among the world's 40 most polluted nations | 9 |
| Number of deaths attributed to air pollution annually | 6.5 million |
| Percentage of deaths attributed to air pollution occurring in Asia-Pacific | 70% |
| Number of lives that could be saved by reducing air pollution | Hundreds of thousands |
| Amount of money that could be saved by reducing air pollution | Billions of dollars |
| Cost of implementing clean air strategies in Thailand by 2030 | US$4 billion annually |
| Cost of inaction in Thailand by 2030 | US$12 billion |
| Number of cars that could be taken off the road by reducing Indonesia's greenhouse gas emissions by 650 megatonnes | 130 million |
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What You'll Learn
The burning of fossil fuels
China is the largest emitter of carbon dioxide in the Asia-Pacific region and the world, with more than 10 GtCO₂ emitted per year. The primary source of these emissions is fossil fuels, particularly coal. About 58% of the total energy generated in China comes from coal, and the country is also one of the largest importers of oil, which contributes to CO2 emissions through motor vehicle use. India, another major emitter in Asia, also relies heavily on coal, which accounts for about 44% of the country's energy.
The rise in CO2 emissions in Asia is due to the region's rapidly growing economies and increasing energy demand. Per-capita emissions tend to be higher in more economically developed regions, but they can also vary depending on the structure of the economy and the energy system. For example, emissions will be higher in economies with a higher share of energy-intensive industries, a greater dependence on fossil fuels for power generation, or a higher number of carbon-intensive modes of transportation.
To reduce emissions, countries in Asia can implement policies such as carbon taxes on the burning of fossil fuels, inclusion of more sectors in emissions trading systems, and providing financial incentives for the use of less-polluting alternatives. For instance, China could use carbon tax revenues to finance green investments or reduce other taxes. Additionally, countries can work towards reducing their dependence on fossil fuels, such as China's plan to generate more electricity using nuclear, renewable energy sources, and natural gas.
The efforts of Asian countries to reduce emissions are crucial in the fight against global warming. Asia-Pacific emits the largest volume of greenhouse gases, producing about half of the world's carbon dioxide. If the region can successfully curb its emissions, the impact will be felt globally and contribute significantly to the goal of keeping warming below the Paris Agreement's target of 1.5-2 degrees Celsius above pre-industrial levels.
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Industrial emissions
Asia is the world's largest emitter of greenhouse gases, accounting for around half of the global emissions. China is the world's largest emitter, producing more than a quarter of the world's emissions. China's emissions tripled over the three decades leading up to 2021, and the country is heavily reliant on coal power, with more than half of the world's coal plants. India is another major emitter, and Asia is also home to some of the world's most polluted countries, including China, Japan, Laos, South Korea, and Vietnam.
To address industrial emissions, Asia can implement several measures:
- Introduce advanced emission standards in industries, such as iron and steel plants, cement factories, and chemical industries.
- Improve energy efficiency in industries and encourage the use of renewable energy sources.
- Reduce sulphur dioxide, nitrogen oxides, and particulate emissions at power stations and large-scale industries through post-combustion controls.
- Improve brick kiln efficiency and implement emissions standards.
- Encourage the recovery of associated petroleum gas, stop routine flaring, and improve leakage control in oil and gas production.
By taking these actions, Asian countries can significantly reduce their industrial emissions and improve air quality, protecting the health and well-being of their citizens and mitigating the impacts of climate change.
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Forest fires
One of the most affected areas by forest fires is South Asia, which includes countries like India, Nepal, Bangladesh, Pakistan, and Sri Lanka. Between 1990 and 2020, India saw a massive increase in CO2 emissions, rising from 578.5 to 2441.8 million tons. Similarly, Bangladesh's CO2 emissions increased more than six-fold during the same period, while Nepal's emissions rose from 0.72 million tons to 16.97 million tons. These rising emissions have severe environmental and public health implications for the region.
East Asian countries like China, Japan, and South Korea have also been battling air pollution. China's economic growth, fueled by abundant coal reserves, has come at the cost of air quality. However, some Chinese cities like Beijing, Shanghai, and Hong Kong have seen improvements due to ambitious environmental regulations. Japan and South Korea have also successfully reduced pollution levels over their cities through national environmental regulations.
The health impacts of forest fires and air pollution are significant. According to the World Health Organization (WHO), approximately 4.2 million people worldwide die prematurely each year due to heart disease, stroke, lung cancer, and respiratory diseases linked to air pollution. Furthermore, 91% of these premature deaths occur in low- and middle-income countries in South-East Asia. The fine particulate matter (PM2.5) and ozone pollution are identified as the most detrimental air pollutants, posing substantial risks to human health in Asian countries.
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Vehicle emissions
Road travel accounts for the majority of transport emissions, with passenger vehicles such as cars and buses contributing 45.1%, and trucks carrying freight contributing 29.4%. The burning of fossil fuels, such as gasoline and diesel, releases carbon dioxide (CO2) into the atmosphere, which is the principal greenhouse gas. While CO2 is not inherently harmful and is necessary for life on Earth, the excessive burning of fossil fuels releases more CO2 than the planet can absorb. This leads to an increase in global temperatures, causing more severe storms, droughts, and other weather events.
To address this issue, countries in East and Southeast Asia can take several measures. These include investing in renewable energy, transitioning to electric vehicles, improving waste management, and adopting cleaner cooking fuels. Indonesia, for example, could improve its air quality and reduce greenhouse gas emissions by 650 megatonnes, equivalent to removing 130 million cars from the road, by investing in renewable energy and fostering the transition to electric cars.
Additionally, improving fuel efficiency and changing the type of fuel used can also help reduce vehicle emissions. Electric vehicles are gaining popularity, with sales surging since 2017 and representing 17.8% of all new registered passenger vehicles in 2021 in Europe. While the production and disposal of electric cars can initially be more environmentally damaging than traditional cars, the increased use of renewable energy sources and improvements in battery sustainability will make them a cleaner alternative in the future.
Furthermore, stricter vehicle emission standards and regulations, such as the US Clean Air Act, can help reduce air pollution from vehicles. Newer vehicles tend to emit less pollution due to stronger fuel economy standards, but the growing popularity of gas-guzzling SUVs and pickup trucks can offset these gains. Nevertheless, major technological innovations and shifts towards lower-carbon electricity sources offer promising solutions to reduce emissions from passenger vehicles in the future.
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Energy efficiency standards
Asia's energy efficiency standards are a varied landscape, with some countries making notable progress and others lagging. The region's energy demand is expected to grow by 2.9% per year until 2035, outpacing the global average of 1.6%. This rising demand has been primarily driven by a surge in fossil fuel use, with oil and coal being the largest contributors.
To address this, countries in the region are adopting various strategies to improve energy efficiency and sustainability. For instance, the Philippines' Energy Efficiency Project promotes the use of compact fluorescent lamps (CFLs), which are estimated to save Filipinos around $9 annually over the next 7 to 10 years. Additionally, a pilot program in Guangdong aims to retrofit plants and buildings with energy-efficient technology, reducing coal use and energy consumption significantly.
Some countries in Southeast Asia have set ambitious targets for net-zero emissions and carbon neutrality. Singapore, for instance, is on track to achieve emissions reductions by 2030, with solar power expected to supply 28% of its peak power demand. Thailand, the world's 11th largest vehicle manufacturer, is poised to become a hub for electric vehicle (EV) production, contributing to the electrification of the transport sector.
While progress is being made, there are still challenges to overcome. The rising demand for steel and cement in the region, driven by increasing urbanization rates, poses a significant hurdle. The steel and cement industries are highly emission-intensive and heavily reliant on coal. Decarbonizing these industries is crucial, and CCUS (carbon capture, utilization, and storage) technology offers a promising solution. However, this requires substantial investment, with the IEA estimating that Southeast Asian countries will need nearly $1 billion annually from 2025 to 2030 to meet their emissions reduction goals.
To summarize, Asia is witnessing a diverse range of efforts to enhance energy efficiency and sustainability. While some countries are making significant strides, others are facing challenges in addressing the emissions and pollution associated with rising energy demand. Regional integration, multilateral power trading, and collaboration on energy efficiency standards will be vital to overcoming these obstacles and ensuring a secure and sustainable energy future for Asia.
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Frequently asked questions
Asia is the world's most polluted region, with 90% of its 2.5 billion people breathing unsafe air.
The burning of fossil fuels for power generation, industry, and transport, as well as the burning of biomass for cooking, heating, and lighting, are the main sources of pollution in Asia.
Air pollution is a major health risk in Asia, causing millions of premature deaths each year. It also impacts the economy, food and water security, and climate systems, hampering sustainable growth and poverty alleviation efforts.
The UN Environment Programme (UNEP) works with governments and stakeholders to develop initiatives and policies to reduce air pollution. The Asia-Pacific Clean Air Partnership provides a platform for knowledge sharing and collaboration. Implementing clean air strategies can save lives and money, with benefits for public health, economic development, and the climate.
