UNEP-IUCN-FAO CDM and Forestry Addis, Oct 2003 Carbon stock accounting: Total stock change, advanced crediting t0t0 t1t1 Certification and issuance time carbon rCER - t 1 : here end of 1 st Commitment Period (could be earlier) - rCERs valid for CP in which certification has taken place - Problem: risk of carbon release afetr t 1 (full amount has not neen stored for t 1 -t 0 )
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