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.
In yet another ominous climate change warning, atmospheric levels of the three main greenhouse gases - carbon dioxide, methane and nitrous oxide all reached new record highs in 2021, according to this new report from the World Meteorological Organization (WMO).
As part of the workplan agreed under the workstream to complement the implementation of the Kigali Amendment, the Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants (CCAC) has commissioned a study to provide a profile of current and projected hydrofluorocarbon (HFC) consumption in Montreal Protocol Article 5 countries (deve
Hydrofluorocarbons (HFCs) used in mobile air conditioning (MAC) and refrigeration equipment are an important contributor to greenhouse gas (GHG) emissions from motor vehicles. Estimates of emissions in China from the MAC refrigerant HFC-134a, conducted by Peking University, shows that they exceed 20 million tonnes of CO2 equivalent per year .
The world will need more than 10 billion new cooling appliances by 2050, according to a recent estimate. That would take the total up to around 14 billion such machines in a warming world. An estimated 3.6 billion appliances are currently in use.
The 2019 edition of the European Environment Agency (EEA) report on fluorinated greenhouse gases (F-gases) confirms the good progress achieved in 2018 by the European Union (EU) in phasing-down the use of hydrofluorocarbons (HFCs), a set of fluorinated gases with a high global warming potential (GWP) that is significantly contributing to climate
This report is the background document providing the basis for the Cooling Emissions and Policy Synthesis Report by the United Nations Environment Programme (UNEP) and the International Energy Agency (IEA) that is being published simultaneously.
Stationary air conditioning systems are used to provide cooling for indoor occupants for their thermal comfort at a suitable indoor air quality. Within the cooling sector the stationary air conditioning sub-sector represents the largest and most rapidly growing area of HFC use.
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.
