high Pacific native Cobb

Core/Site name:

Palmyra Island

Country/Region:

Palmyra Island, central tropical Pacific

Elevation:

-9

Archive:

corals

Species:

Porites lutea

Proxy measurement:

18O

Sampling resolution:

monthly

Startyear:

1886 AD

Endyear:

1998 AD

Description:

While instrumental and proxy-based climaterecords describe significant decadal-scale climate variability throughout the tropical Pacific, Indian, and Atlantic Oceans, the processes responsible for these variations and their interactionsare not readily apparent from the observations.A new 112-yr coral-based sea surface temperature(SST) reconstruction from Palmyra Island in the central tropical Pacific (CTP) exhibitss trong decadal variability with an amplitude of roughly 0.3◦C. A 12-13yr-period signal in thisc oral record is highly coherent with long equatorial Atlantic and Indian Ocean climate records, implying a unified phenomenon. The Atlantic pattern suggests thatit may fall under direct influence of anomalousSST in the CTP, as it does over interannual timescales, while the Indian Ocean pattern exhibits maximum response during the switch between warm/cold states in the tropical Pacific. The results demonstrate that the CTP has played a significant role in determining the expression of global decadal climatevariability over the twentieth century.

Data entered by name:

Filipsson, Helena

Data entered by email:

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Main reference(s):

Cobb, K. M., C.D. Charles, and D.E. Hunter, 2001, A central tropical Pacific coral demonstrates Pacific, Indian, and Atlantic decadal climate connections. Geophys. Res. Lett., Vol. 28 , No. 11 , p. 2209

Link to reference 1:

http://shadow.eas.gatech.edu/~kcobb/cobb01.pdf

Link to reference 2:

http://www.agu.org/pubs/crossref/2001/2001GL012919.shtml

Data storage link 1:

http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:97276847613909::::P1_STUDY_ID:1865

Current dating method:

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Annual snow acc rate:

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Category: Ocean2k