Changes in wind-driven upwelling during the last three centuries: Interocean teleconnections Public Deposited

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  • Analysis of sediments from two wind-driven upwelling systems, Guaymas and Cariaco basins, using the alkenonebased U_37^(K^' ) paleothermometer yielded high-resolution records of sea surface temperatures (SST) from 1700 to 2000 AD. The trends in the U K'/37 index reveal steady SST increases of 1 to 2°C at both sites since the end of the Little Ice Age. Higher-frequency changes in SST indicate a decoupling in the relative intensity of wind-driven upwelling at the two sites. Periods of enhanced upwelling in Guaymas correspond to periods of decreased upwelling in Cariaco (and vice versa). We propose that these contrasts reflect regional differences in the upwelling response of upwelling to changes in the positioning of the Inter-Tropical Convergence Zone (ITCZ) and the Subtropical High (SH) under current climate conditions.
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  • Goñi, M. A., R. C. Thunell, M. P. Woodwort, and F. E. Müller-Karger (2006), Changes in wind-driven upwelling during the last three centuries: Interocean teleconnections, Geophys. Res. Lett., 33, L15604, doi:10.1029/2006GL026415.
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  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-04-06T13:20:36Z (GMT) No. of bitstreams: 1 Goni et al GRL 2006.pdf: 250892 bytes, checksum: bb56b8832325632ffb2e1d219fa8afc6 (MD5)
  • description.provenance : Submitted by Linda Lamb (llamb@coas.oregonstate.edu) on 2010-04-05T22:41:02Z No. of bitstreams: 1 Goni et al GRL 2006.pdf: 250892 bytes, checksum: bb56b8832325632ffb2e1d219fa8afc6 (MD5)
  • description.provenance : Made available in DSpace on 2010-04-06T13:20:36Z (GMT). No. of bitstreams: 1 Goni et al GRL 2006.pdf: 250892 bytes, checksum: bb56b8832325632ffb2e1d219fa8afc6 (MD5) Previous issue date: 2006-08-08
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  • 0094-8276

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