1. Background information on the SBSTA process Scientific and methodological aspects of the proposal by Brazil

2. 2 The Brazilian Proposal (BP) As presented by Brazil during Kyoto negotiations: Approach for distributing the burden of emission reductions among Annex I countries based on the effect of their cumulative historical emissions (since 1840) on the global average surface air temperature

3. 3 History 1997Original Proposal presented by Brazil (COP 3) COP 3 refers Proposal to SBSTA 1998Revision of the Proposal (Filho and Miguez, 1998) Brazilian Side Event during COP 4 1999Expert meeting (Brazil) SBSTA 11  review at SBSTA 14 2001First UNFCCC Expert Meeting (Bonn/Germany) SBSTA 14  support for research and BP review 2002Second UNFCCC Expert Meeting (Bracknell/UK) (preliminary results and conclusions) SBSTA 17 ...

4. 4 SBSTA 17 conclusions: Work to be continued by scientific community Consistency with standards of peer-reviewed scientific literature Process: Inclusive, open, transparent Invitation to IGBP, WCRP, IHDP, IPCC to provide information to Parties on their interest in the work...

5. 5 Mandate for this event at SBSTA 20: SBSTA 17 … … encouraged research institutions and scientists involved to undertake further work on scientific and methodological aspects of the proposal by Brazil, to make the results of their work publicly available and to report the progress of their work at the twentieth session of the SBSTA, … requested the secretariat to organize a side event on this issue at the same session.

6. 6 Outlook: SBSTA 17 decided to review the progress of the work on the scientific and methodological aspects of the proposal by Brazil at SBSTA 23

7. 7 UNFCCC web sites: http://unfccc.int/program/mis/brazil/index.html http://unfccc.int/ Issue module relating to the proposal by Brazil http://unfccc.int/issues/ccc.html