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IPCC AR4 to AR5

IPCC AR4 to AR5. Terminology. Unchanged GCMs – General Circulation Models AR4 SRES – Special Report on Emissions Scenarios AR5 SSPs – Shared Socioeconomic Pathways RCPs – Representative Concentration Pathways RAPs – Representative Agricultural Pathways. How are these terms related?.

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IPCC AR4 to AR5

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  1. IPCC AR4 to AR5

  2. Terminology • Unchanged • GCMs – General Circulation Models • AR4 • SRES – Special Report on Emissions Scenarios • AR5 • SSPs – Shared Socioeconomic Pathways • RCPs – Representative Concentration Pathways • RAPs – Representative Agricultural Pathways

  3. How are these terms related?

  4. RCPs • RCP 2.6 is below anything from AR4 • RCP 6 is most similar to A1B • RCP 8.5 is higher than anything AR4

  5. RCP – Trends

  6. RCP Details

  7. Climate impacts under RCP 8.5 - GFDL

  8. Climate impacts under RCP 8.5 - HadGem

  9. Climate impacts under RCP 8.5 - IPSL

  10. Climate impacts under RCP 8.5 - MIROC

  11. SSPs • SSP1 – Low Challenges • SSP2 – Intermediate Challenges, business as usual (med-med) • SSP3 – High Challenges • SSP4 – Adaptation Challenges Dominates • SSP5 – Mitigation Challenges Dominates

  12. Combining SSPs with RCPs • SSPs are separated from emissions, but not all SSPs are compatible with all RCPs

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