The UN Intergovernmental Panel on Climate Change (IPCC) has announced new guidelines for governments to use when measuring greenhouse gas emissions.
The IPCC said the guidelines, which were updated for the first time in more than a decade, will improve emissions estimates and provide greater transparency.
Under the 2015 Paris Agreement, governments use common methodologies to measure how many greenhouse emissions they have produced and how many have been removed from the atmosphere.
The IPCC said the new 2019 guidelines built on 2006 methodologies by updating gaps and out-of-date science.
Under the new rules, satellite data on carbon dioxide and other greenhouse gases will be used to estimate the amount emitted by each country.
Carbon dioxide released during the process of producing hydrogen will also be also included in the estimates.
Starting next year, all parties to the agreement will be required to regularly report their greenhouse gas emissions to the United Nations.
IPCC Chair, Lee Hoe-sung, said the guidelines will improve reporting and help implement the agreement more effectively.