Methodology Report on Short-lived Climate Forcers

Methodology Report


The Panel at its 49th Session in May 2019 adopted Decision IPCC-XLIX-7 that the IPCC Task Force on National Greenhouse Gas Inventories (TFI) should produce a Methodology Report on Short-lived Climate Forcers (SLCF).

Preparatory work for the Methodology Report is starting in the sixth assessment cycle and continue with further methodological development in the seventh assessment cycle.

Within the sixth assessment cycle, three to four expert meetings will produce a series of supporting materials which will inform a scoping meeting on the Methodology Report on SLCF. The scoping meeting will also take into consideration the work on SLCF that is already underway in the Sixth Assessment Reports of Working Group I and III.

The outline from the scoping meeting will then be presented to the Panel for approval.

Preparatory Work

The TFI has rescheduled the expert meetings planned for 2020 because of disruption caused by the COVID-19 pandemic.

Expert meetings are now planned for:

  • 2021 TBD, FAO, Rome, Italy – Expert meeting on SLCF emissions from sources in the Agriculture, Forestry and Other Land Use (AFOLU) and Waste sectors
  • 15-17 December 2020, Istanbul, Turkey – Expert meeting on SLCF emissions from sources in the Energy and Industrial Processes and Product Use (IPPU) sectors.

The TFI Technical Support Unit is compiling source categories of SLCF emissions and producing a comparative analysis of IPCC methodologies for greenhouse gas emissions/removals and available methodologies for estimation of SLCF emissions to assess their degree of integration, as well as any gaps. Draft analysis for all sectors, i.e. Energy, IPPU, AFOLU and Waste, have already been shared with organizations that produce SLCF methodologies to collect their feedback.

Participants of both expert meetings have been selected by the TFI Bureau taking into account scientific and technical expertise, geographical and gender balance to the extent possible in line with Appendix A to the Principles Governing IPCC Work.