English to Russian Science Environment & Ecology

Recalculation of historic emissions and removals is good practice when new methods are introduced or existing ones refined, when new sources and sinks categories are included, or when data are updated (for example through new measurements during the CP or the availability of new information on verification).
Recalculations may also be needed if lands are reclassified at a later time (e.g. for lands that have lost forest cover but where a classification as deforested lands was pending *and has been resolved*, see Section 2.6.1).
The CMP decisions make provisions for recalculation, consistent with the UNFCCC reporting guidelines, and mention that previous estimates should be recalculated using the new methods for all years in the time series.