Concentrations of methane, a key driver of climate change, have risen faster than ever before over the last five years, the Global Carbon Project's Global Methane Budget shows.
The budget, published on Tuesday in the journal Earth System Science Data, is produced by international scientific agencies, including the CSIRO.
After carbon dioxide, methane was the most important greenhouse gas contributing to human-induced climate change, CSIRO Chief Research Scientist Pep Canadell said.
