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 …

UNEP to meet city industry heads next year

Pune In a bid to bring down the emission levels of Hydrochloroflurocatrbons (HCFC) in the city, the United Nations Environment Programme (UNEP) has shown its intent to initiate a meeting with the CEOs of the industries in Pune in March 2010. It will probably be the first time that an …

Sink mechanism for significantly low level of ozone over the Arabian Sea during monsoon

Measurement of surface ozone over the Arabian Sea during the southwest monsoon season (June

The Montreal Protocol: India's success story

The Montreal Protocol on Substances that Deplete the Ozone Layer has since been recognized as an extraordinary environmental success in global cooperation to protect the ozone layer. The Montreal Protocol has completed more than 20 years of its progress. India being a Party to the Montreal Protocol and all its …

The other climate changers

Most initiatives to slow global warming involve reducing carbon dioxide emissions. Little attention has been given to reducing emissions of the light-absorbing particles known as "black carbon" or the gases that form ozone--even though doing so would be easier and cheaper and have a more immediate effect. At last, world …

Fluorescent signature

A solution that detects minute presence of ozone, even in cells ozone in the stratosphere protects the earth from harmful ultraviolet rays. But when in the troposphere, near the ground level, it acts as a pollutant. Though it is not emitted directly, emissions from car engines or industrial operations react …

National ambient air quality status 2008

Results of ambient air quality monitoring carried out during 2008 at various monitoring stations under National Air Quality Monitoring Programme by the CPCB. Pollutants found to exceed the standards in many cities are suspended particulate matter and respirable suspended particulate matter. Results of additional pollutants such as benzene and carbon …

Climate change on livestock: government plan to minimise adverse impact

Federal Government is preparing a plan to minimise the adverse impact of climate change on livestock. The plan will focus on provision of shading, improved airflow, reduced crowding, alerted diets and provision for ensuring animal health. According to official sources of Planning Commission, a new national forestry policy with institutional …

Time running out to deal with banks of greenhouse gases

In your Special Report 'Cutting out the chemicals', you discuss the possible shift of regulatory control of hydrofluorocarbons (HFCs) from the UN Framework Convention on Climate Change to the Montreal Protocol (Nature 457, 518

Atmospheric carbonaceous aerosols: issues, radiative forcing and climate impacts

Atmospheric aerosols (a mixture of solid or liquid particles suspended in the air medium) are short-lived, with a residence time of about a week in the lower troposphere. Unlike the principal greenhouse gases, aerosols are more concentrated in the source regions and exhibit strong spatial and temporal variations.

G8 recognizes need to act on super greenhouse gases, considers more aggressive stance on CO2

As the Group of Eight began discussions on targets for reducing climate emissions, talk was circulating of a possible commitment to limit warming to 2

HFCs could pose great threat to efforts against global warming: study

A new scientific study has warned that if use of 'super greenhouse gases', known as hydrofluorocarbons or HFCs, is not controlled it could contribute to global warming. According sources here on Wednesday, these findings were made by an international team of researchers. Hydrofluorocarbons (HFCs) were originally developed to replace the …

Greenfreeze Could Spell the Deep Freeze for Global Warming Refrigerators

Hydrocarbon (HC) refrigerants are a "natural" cooler widely used in domestic and commercial refrigerators all over the world, except in the U.S. and Canada. HC refrigerants produce less greenhouse gasses than hydrofluorocarbon (HFC) technology, but they aren't approved for the U.S. market - yet. Now Greenfreeze, the Greenpeace-developed HC refrigerant, …

Gas that saved ozone layer making world warmer

Research Shows Replacements Of Ozone-Destroying CFCs Are Powerful Greenhouse Gases The green movement

Photochemistry of air pollution in Delhi, India: a monitoring based analysis

In National Capital Region (NCR) of Delhi, spreading ~900 Sq. km, the increasing air pollution poses a serious problem due to its direct impact on human health, such as increased incidences of chronic bronchitis, cancer of the respiratory tract, asthma, and induced premature mortality. Increase in motorization (with ~600 vehicles …

Curb HFCs

Plea to phase down a potent greenhouse gas TWO island nations vulnerable to climate change impacts, Micronesia and Mauritius, have sought curbs on a chemical that could represent a third of the total greenhouse gas (ghg) emissions by 2040. In a joint representation, the two countries sought US support to …

Cocktail of noxious gases turns up the heat, says study

New Delhi: If you feel dizzier in summer, there is a good reason for it. As the mercury mounts, a little-known summer pollutant comes to play, jeopardising public health. Ozone

Delhi is reeling under high levels of deadly ozone: CSE analysis

The latest CSE analysis finds that Delhi is witnessing an unprecedented ozone build-up. Ozone levels have exceeded the standards proposed by MoEF almost everyday in April. It recommends notification of the proposed air quality standards without any further delay to implement control strategies for ozone-forming gases. In April, ozone levels …

Steps to phase out harmful chemical from garment sector

The Bangladesh Garments Manufacturers and Exporters Association (BGMEA) and Department of Environment (DOE) on Monday have launched a joint initiative to phase out the use of carbon tetrachloride (CTC) from the sector by the end of this year. CTC, a member of eight Ozone Depleting Substances (ODS) family with more …

U.S. To Rely More On Scientists For Air Rules: EPA

The U.S. government will reverse a Bush administration policy and increase the role of scientists in setting air standards for criteria pollutants harmful to human health, Lisa Jackson, the administrator of the Environmental Protection Agency, said on Thursday. Jackson said the EPA will reinstate the role of a policy document …

US Says Wants To Cut Potent HFC Greenhouse Gases

The United States intends to work toward reducing emissions of potent greenhouse gases found in refrigerators and air conditioning systems but has not yet decided which international venue to use to advance the issue, US officials said on Monday. In a letter to a UN agency, the US State Department …

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