This paper elaborates on the issue of adjustments to national greenhouse gas (GHG) inventories and projections, in particular to those related to temperature fluctuations. In preparing this paper, the secretariat compiled information on adjustments submitted by Parties in the first and second national communications; in total, seven Parties provided unadjusted and adjusted data on GHG emission inventories and/or projections. It also analysed the limitations of various methods related to temperature fluctuations and their implications. The paper was sent to experts for review and comments. The experts were nominated by governments. It was also sent to analysts from Annex I Parties, who co-operated with the secretariat by providing additional data and information. A short summary may be found in the progress report on methodological issues (FCCC/SBSTA/1997/9)