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Climate Benefits of EPA CPP Comments on SCC Billy Pizer History - PowerPoint PPT Presentation

Assessing the Air Quality and Climate Benefits of EPA CPP Comments on SCC Billy Pizer History <2008 SCC zero 2008: Certainly not zero Different agency estimates. 2009 interim interagency estimate 2010 final


  1. Assessing the Air Quality and Climate Benefits of EPA CPP Comments on SCC Billy Pizer

  2. History • <2008 SCC zero • 2008: “Certainly not zero” • Different agency estimates. • 2009 interim interagency estimate • 2010 final interagency estimate • 2013 revised interagency estimate

  3. Challenges for regulatory SCC • Finding key pieces – Socioeconomic / emission assumptions – Climate modeling – Impacts • Choosing what to harmonize – Socioeconomic assumptions – Discount rate – Climate sensitivity – Global versus local 4

  4. Looking forward • <Current estimates reasonable> • Expert review • Regularized process • High value research – Impacts and integration – Peer review of models – Low probability, extreme events 5

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