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 …

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 …

Overview of methods to assess population exposure to ambient air pollution

This document summarizes several air quality measurement and modelling methods that can be used to estimate ground-level air pollutant concentrations and presents multiple approaches to monitoring ambient air pollution at different spatial and temporal scales. These methods are crucial for estimating population exposures, which can be defined as the product …

Ozone and UV bulletin

The stratosphere ozone layer is slowly recovering and the recovery will be complete in most parts of the atmosphere in the coming decades, according to the latest bulletin by the World Meteorological Organization (WMO). The bulletin with the updated status of the ozone layer by WMO-Global Atmosphere Watch bulletin returned …

Air pollution and management: brief introduction

The deteriorating quality of air, transboundary haze pollution and global climate change are the major problems affecting the atmospheric ecosystem. Air quality has deteriorated as a result of increasing traffic congestion, rapid industrialisation and increased energy consumption. Tackling air pollution in the Asia and Pacific region is of utmost urgency, …

Scientific assessment of ozone depletion: 2022 - executive summary

Science has been one of the foundations of the success of the Montreal Protocol. This assessment highlights advances and updates in the scientific understanding of ozone depletion since the 2018 Scientific Assessment of Ozone Depletion and provides policy-relevant scientific information on current challenges and future policy choices. The latest edition …

Space applications for management of air pollution in Asia and the Pacific

Air pollution is increasingly understood as a global issue, requiring an understanding of pollution sources, transport, and transformation from local to regional to global scales (IPCC, 2013). Polluting gases, such as ozone (O3) and aerosols, particularly PM 2.5, are known to be major risk factors for public health (Cohen and …

WHO global air quality guidelines: particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide

New WHO Global Air Quality Guidelines (AQGs) provide clear evidence of the damage air pollution inflicts on human health, at even lower concentrations than previously understood. The guidelines recommend new air quality levels to protect the health of populations, by reducing levels of key air pollutants, some of which also …

Global methane assessment: benefits and costs of mitigating methane emissions

The assessment highlights the critical role that cutting methane emissions, including from the fossil fuel industry, plays in slowing the rate of global warming. Cutting human-caused methane by 45% this decade would keep warming beneath a threshold agreed by world leaders. There are multiple benefits to acting including: the rapid …

Air quality in Europe: 2020 report

Better air quality has led to a significant reduction of premature deaths over the past decade in Europe. However, the European Environment Agency’s (EEA) latest official data show that almost all Europeans still suffer from air pollution, leading to about 400,000 premature deaths across the continent. The Air quality in …

Marginal climate and air quality costs of aviation emissions

Aviation emissions have been found to cause 5% of global anthropogenic radiative forcing and ~16 000 premature deaths annually due to impaired air quality. When aiming to reduce these impacts, decision makers often face trade-offs between different emission species or impacts in different times and locations. To inform rational decision-making, …

Air quality in Europe: 2019 report

This report presents an updated overview and analysis of air quality in Europe from 2000 to 2017. It reviews the progress made towards meeting the air quality standards established in the two EU Ambient Air Quality Directives and towards the World Health Organization (WHO) air quality guidelines (AQGs). It also …

Opportunities for increasing ambition of Nationally Determined Contributions through integrated air pollution and climate change planning: a practical guidance document

This guidance document provides a practical framework that can be used to identify, prioritise and include mitigation measures that can increase a country’s climate change mitigation ambition through actions that improve local air quality. It also outlines how this can be reflected in the updated Nationally Determined Contribution and accompanying …

Question raised in Lok Sabha on Rise in Ozone Levels, 28/06/2019

Question raised in Lok Sabha on Rise in Ozone Levels, 28/06/2019. The monitoring data of ozone in Delhi-NCR is regularly displayed on Central Pollution Control Board (CPCB) website on real time basis. The analysis of AQI for Delhi reveals that during last three years (2016-2018), ozone was reported as prominent …

Ozone pollution likely to spike in Capital

Air Quality Index also expected to slowly deteriorate in the next two days With rising temperatures, surface ozone pollution is expected to increase in Delhi in the next three days, according to a forecast by the System of Air Quality and Weather Forecasting and Research (SAFAR). “Surface ozone can lead …

Most Australians see climate change as bigger threat than terrorism: Study

Majority of Australians rate climate change as a bigger threat to the country's interest compared to global terrorism, a study has found. Almost 64 per cent of Australians have called climate change as 'a critical threat' —an increase of six points from 2018 and 18 points since 2014, according to …

Green roofs could reduce indoor air pollution

Green roofs -- roofs that are planted with vegetation -- may improve the indoor air quality of commercial buildings by cutting the amount of ozone coming into the buildings from the outside, according to new research from Portland State University. The findings add to the already known environmental benefits of …

WMO statement on the state of the global climate in 2018

This publication marks the twenty-fifth anniversary of the WMO Statement on the State of the Global Climate, which was first issued in 1994. The 2019 edition treating data for 2018 marks sustained international efforts dedicated to reporting on, analysing and understanding the year-to-year variations and long-term trends of a changing …

Xinjiang's major cities see improved air quality

Fourteen major cities in northwest China's Xinjiang Uygur Autonomous Region had their air quality improved in 2018, thanks to intensified efforts in environmental control. The average concentration of sulfur dioxide, nitrogen dioxide, carbon monoxide, ozone, and fine particles dropped by 15.4 percent, 10 percent, 23.1 percent, 6.3 percent and 10.9 …

A global snapshot of the air pollution-related health impacts of transportation sector emissions in 2010 and 2015

Some 385,000 people worldwide died prematurely in 2015 from air pollution caused by vehicle exhaust emissions finds this study published by International Council on Clean Transportation (ICCT) which singled out diesel engines as the main culprit. China, the EU, the United States, and India accounted for 70% of global transportation-attributable …

Associations between coarse particulate matter air pollution and cause-specific mortality: A nationwide analysis in 272 Chinese cities

Coarse particulate matter with aerodynamic diameter between 2.5 and 10μm (PM2.5–10) air pollution is a severe environmental problem in developing countries, but its challenges to public health were rarely evaluated. The researchers aimed to investigate the associations between day-to-day changes in PM2.5–10 and cause-specific mortality in China. Original Source

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