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Palmyra coral evidence for central tropical Pacific climate change

Palmyra coral evidence for central tropical Pacific climate change. 1°C. Thanks to Chris Charles. Laminated deep sea sediments preserve ~bimonthly environmental record for 1000’s of years. New Technology: XRF Core Scanner. Can produce climate records at ~ monthly resolution

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Palmyra coral evidence for central tropical Pacific climate change

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  1. Palmyra coral evidence for central tropical Pacific climate change 1°C Thanks to Chris Charles

  2. Laminated deep sea sediments preserve ~bimonthly environmental record for 1000’s of years

  3. New Technology: XRF Core Scanner Can produce climate records at ~ monthly resolution from laminated sediments

  4. XRF Evidence for Major droughts in Mesoamerica Strong, multiyear droughts shown in dark grey bars Represent the general period of collapse of the Terminal Classic Maya civilization during an interval of generally drier conditions Haug, G. et al. 2003. Science 299: 731-735

  5. Conclusions There is no “baseline”: variation is the name of the game on multi-decade time scales Need long time series records since instrumental records rarely capture the extremes of variation Reserves must have sufficient connectivity to permit population shifts on decadal-century time scales Reserves may not always contain the target species but still play a vital role in long-term conservation

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