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SEARCH SSC Meeting Oct 28, 2008

Explore paleoclimate records in the Arctic over 2000+ years using high-resolution and centennial-millennial data, including proxies like varves, chironomids, and new indicators like δD and GDGTs for temperature and precipitation research.

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SEARCH SSC Meeting Oct 28, 2008

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  1. Paleoclimate Perspectives of Arctic Change Spatial Synthesis Methods Extended Timescales: 2000+ Years New Temperature/Precipitation Proxies SEARCH SSC Meeting Oct 28, 2008

  2. Paleo Perspectives of Arctic Change

  3. Paleo Perspectives of Arctic Change • Instrumental Record Too Short for Evaluating Recent Trends in Context of Natural Background Variability • Paleoclimate Records Key • High Resolution (annual-decadal) • Centennial-Millennial (≤ 2000 years)

  4. Paleo Perspectives of Arctic Change

  5. Paleo Perspectives of Arctic Change

  6. Paleo Perspectives of Arctic Change

  7. Paleo Perspectives of Arctic Change

  8. Paleo Perspectives of Arctic Change Temperature anomaly 1600 1700 1800 1900 2000 Year AD Overpeck et al.,Science, 1997

  9. Paleo Perspectives of Arctic Change

  10. Paleo Perspectives of Arctic Change

  11. Paleo Perspectives of Arctic Change

  12. Paleo Perspectives of Arctic Change

  13. Paleo Perspectives of Arctic Change Temperature anomaly 1600 1700 1800 1900 2000 Year AD Overpeck et al.,Science, 1997

  14. Paleo Perspectives of Arctic Change

  15. Paleo Perspectives of Arctic Change Long records ≥1200 years

  16. Paleo Perspectives of Arctic Change

  17. Paleo Perspectives of Arctic Change

  18. Paleo Perspectives of Arctic Change

  19. Paleo Perspectives of Arctic Change

  20. Paleo Perspectives of Arctic Change Varves and other sedimentary features Chironomids Pollen Diatoms, biogenic silica and organic matter content

  21. Paleo Perspectives of Arctic Change

  22. Paleo Perspectives of Arctic Change

  23. Paleo Perspectives of Arctic Change New Proxies: D for temperature and Precipitation

  24. Paleo Perspectives of Arctic Change New Proxies: GDGTs for Temperature and Precipitation TEX86 - lake surface temperature BIT - terrestrial runoff MBT - soil temperature

  25. Paleo Perspectives of Arctic Change

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