CSIRO has released the 2025 Report on Australian and global Synthetic Greenhouse Gas emissions 2025 – DCCEEW . The report provides updated data on atmospheric concentrations and emissions of synthetic greenhouse gases in Australia and globally.
The report presents measurements of SGG concentrations recorded at the Cape Grim Baseline Air Pollution Station in Tasmania up to the end of 2024, with emissions estimated to 2023. It also outlines the modelling and analytical techniques used to derive emission estimates and compares CSIRO findings with data from the Australian National Greenhouse Gas Inventory.
Results show increasing concentrations of all major synthetic greenhouse gases in the atmosphere at Cape Grim, consistent with global trends. Total hydrofluorocarbon (HFC) emissions in Australia have grown at an average annual rate of 6.6% between 2005 and 2023, based on CSIRO’s measurements.
Synthetic greenhouse gases, such as HFCs, perfluorocarbons (PFCs) and sulphur hexafluoride, are commonly used in refrigeration, air conditioning, foam blowing and electrical equipment. Their rising concentrations contribute to climate warming and highlight the need for continued management under Australia’s greenhouse gas and ozone protection frameworks.
