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Figure 9.1.5 Decision tree to identify key source categories (Figure 7.1 from Good Practice)
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Question. Are inventory data available for more than one year.
No - Parties should determine key source categories using the Tier 1 Level assessment and qualitative assessment.
Yes - Question:
Are country-specific uncertainty estimates available for each source category estimate?
No - Parties should determine key source categories using the Tier 1 Level assessment, trend assessment and qualitative assessment.
Yes - Determine key source categories using the Tier 2 level and trend assessment, incorporating national uncertainty estimates and evaluating qualitative criteria.
