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Comments on HWP estimation methods

Comments on HWP estimation methods. Ken Skog Kim Pingoud. Methods Topics. Method types Applicability of methods to approaches Data needs and availability Components(variables) needed to estimate for any approach. Methods Types. Flux data – Input from surveys Output:

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Comments on HWP estimation methods

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  1. Comments onHWP estimation methods Ken Skog Kim Pingoud

  2. Methods Topics • Method types • Applicability of methods to approaches • Data needs and availability • Components(variables) needed to estimate for any approach

  3. Methods Types • Flux data – Input from surveys • Output: • Use lifetimes to estimate outputs • Use surveys to estimate outputs • Stock data c) Estimate stock change between two inventories

  4. Methods Applicability

  5. Data Availability

  6. Variables needed to estimate for any approach

  7. EB EC ED C A B D Ex I Harvested Wood Products: Stocks and flows

  8. Harvested Wood Products: Comparison of Approaches U.S. HWP Removals in 2002 = 59 Tg C Variables from U.S. HWP Estimation Methods Approaches: Production (A+B) = 59 Stock Change (A+C) = 68 Atmospheric Flow (A + C – (D – E)) = 62

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