Ozone

Order of the National Green Tribunal regarding ozone pollution across urban India, 21/03/2025

Order of the National Green Tribunal in the matter of News Item titled “CSE report finds dangerous increase in ozone pollution across urban India” appearing in Down to Earth dated 06.08.2024. The Principal Bench of the NGT heard the matter on March 21, 2025. In the original application, registered suo …

Ozone monitoring instrument observations of interannual Increases in SO2 Emissions from Indian coal-fired power plants during 2005–2012

Due to the rapid growth of electricity demand and the absence of regulations, sulfur dioxide (SO2) emissions from coal-fired power plants in India have increased notably in the past decade. In this study, we present the first interannual comparison of SO2 emissions and the satellite SO2 observations from the Ozone …

From April, look around for hourly air pollution updates on LCDs

The project aims at monitoring 10 types of pollutants that affect people's health; it will also work towards reducing concerns. The Indian Institute of Tropical Meteorology (IITM) plans to install 10 air quality monitoring systems and 20 automatic weather stations across Mumbai. These stations will measure pollutants such as suspended …

Primer on short-lived climate pollutants

Slowing the rate of global warming over the near term by cutting short-lived climate pollutants to complement carbon dioxide reductions for the long term. Carbon dioxide (CO2) emissions are responsible for 55-60% of anthropogenic radiative forcing. Fast and aggressive CO2 mitigation is essential to combat the resulting climate change. But …

दिवाली पर 200 गुणा बढ़ जाता है प्रदूषण

सिटी का आबोहवा दिवाली पर काफी जहरीली हो जाती है। प्रदूषण डिपार्टमेंट की पिछले साल की रिपोर्ट के अनुसार, दिवाली के दौरान यहां का एयर प्रदूषण करीब 200 गुना तक बढ़ जाता है। बोर्ड की ओर से शहर का एयर प्रदूषण चेक करने के लिए हर साल दिवाली के मौके …

Air quality still not good in European cities

More than 90% of Europeans living in cities are exposed to unsafe levels one of the most health damaging air pollutants, with Bulgaria having the dirtiest air among EU countries, says a new study by the European Environment Agency (EEA). Despite falling emission levels and reductions of some air pollutant …

Wood fires and diesel cars pose pollution threat - EU watchdog

Air pollution is dangerously high across many parts of Europe, resulting in premature deaths, ill health and huge economic losses linked to reduced crop yields, Europe's environmental watchdog said on Tuesday. While emissions of some pollutants have declined sharply in Europe in recent decades, more diesel cars and a rise …

Climate Change 2013: The Physical Science Basis

"Climate Change 2013: The Physical Science Basis" is the contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. This comprehensive assessment of the physical aspects of climate change puts a focus on those elements that are relevant to understand past, document current, …

Conclave of change makers for clean air and sustainable mobility

Conclave of change makers for clean air and sustainable mobility - a presentation by Dr. B. Nagappa at STEPPING TOGETHER: A Conclave of Changemakers for Clean Air and Sustainable Mobility held in New Delhi from September 26-27, 2013.

Carbon cleanup would save millions of lives: study

Reducing fossil-fuel emissions to safer levels would save millions of lives annually by the end of the century, a study said on Sunday. The estimate is based on a simulation of levels of two big pollutants, fine particulate matter and ozone, from coal, oil and gas. The researchers led by …

Co-benefits of mitigating global greenhouse gas emissions for future air quality and human health

Actions to reduce greenhouse gas (GHG) emissions often reduce co-emitted air pollutants, bringing co-benefits for air quality and human health. Past studies typically evaluated near-term and local co-benefits, neglecting the long-range transport of air pollutants long-term demographic changes, and the influence of climate change on air quality. Here we simulate …

Methane and natural debt and impacts on India’s workers of extreme climate change

Methane and natural debt and impacts on India’s workers of extreme climate change - a presentation by Kirk R. Smith at CSE Annual South Asian Media Briefing Workshop on Climate Change, 2013 held in New Delhi from September 18-19, 2013.

Fine-particle pollution climbs in August: report

Ozone and fine-particle pollution worsened China's air quality in August compared with July, the Environmental Protection Ministry reported on its website on Tuesday. Twenty-eight of the 74 cities mentioned in the report had good air quality for at least 24 days in August. The number of such cities in July …

Sweltering future: Tamil Nadu’s temperature to rise by three degrees

By the end of this century it’s going to be hotter than ever – the average day temperature in Tamil Nadu, now 32.9 degree Celsius is likely to go up by 3.1 degree Celsius. This was the finding of a study conducted by a team of researchers at the Centre …

California: Fires Prompt Air Quality Warning

Air quality officials are warning San Joaquin Valley residents of potential health hazards because of increasing ozone levels and smoke from lingering wildfires. The San Joaquin Valley Air Pollution Control District issued an air alert, the second this year, on Monday for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings and …

Guidelines for the measurement of ambient air pollutants

Under the provisions of the Air (Prevention & Control of Pollution) Act, 1981, the CPCB has notified fourth version of National Ambient Air Quality Standards (NAAQS) in 2009. This revised national standard aims to provide uniform air quality for all, irrespective of land use pattern, across the country. There are …

Current challenges and priorities for greenhouse gas emission factor improvement in select Asian countries

This report, Current Challenges and Priorities for Greenhouse Gas Emission Factor Improvement in Select Asian Countries, focuses on a key initiative of the LEAD program, namely to improve GHG inventories and GHG accounting systems and practices. The national GHG inventories in Asia exhibit diversity in their methodological complexity, accuracy, and …

Environment Ministry seeks help, Tackling ozone depleting substances

The Environment Ministry required the support of Government and Non-Governmental Organizations (NGOs) to eliminate ozone depleting substances (ODS) in the atmosphere, Environment and Renewable Energy Minister Susil Premajayantha said. Addressing a workshop, organised by the National Ozone Unit (NOU) and Sri Lanka Customs, to introduce new Customs symbols, last Friday …

Worldwide air pollution deaths per year number over 2 million

Air pollution may be responsible for more than 2 million deaths around the world each year, according to a new study. The study estimated that 2.1 million deaths each year are linked with fine particulate matter, tiny particles that can get deep into the lungs and cause health problems, Huff …

Beijing, Tianjin and Hebei hit hardest by pollution

Air pollution, including high ozone levels, is most severe in Beijing, Tianjin and Hebei province, according to a report released by the Environmental Protection Ministry on Wednesday. Almost 40 percent of the 74 cities with publicized readings for fine particles failed to meet the national standard for three months or …

Ambient ozone concentrations and the risk of perforated and nonperforated appendicitis: A multicity case-crossover study

Environmental determinants of appendicitis are poorly understood. Past work suggests that air pollution may increase the risk of appendicitis. The researchers investigated whether ambient ground-level ozone (O3) concentrations were associated with appendicitis and whether these associations varied between perforated and nonperforated appendicitis.

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