High Atlantic native Richey

Core/Site name:

Fisk Basin box core PE07-5I, Garrison Basin box core PE07-2

Country/Region:

Gulf of Mexico

Elevation:

-817

Archive:

marine sediments (downcore)

Species:

Globigerinoides ruber (white)

Proxy measurement:

Mg/Ca

Sampling resolution:

decadal

Climate sensitivity:

temperature

Dating resolution:

Radiocarbon; one date per 200 years

Startyear:

0BP

Endyear:

752BP

All uncertainties:

external reproducibility = ±0.14 mmol/mol (±0.3degC);

Description:

We present 2 new decadal-resolution foraminiferal Mg/Ca-SST records covering the past 6-8 centuries from the northern Gulf of Mexico (GOM). These records provide evidence for a Little Ice Age (LIA) cooling of 2°C, consistent with a published Mg/Ca record from Pigmy Basin. Comparison of these 3 records with existing SST proxy records from the GOM-Caribbean region show that the magnitude of LIA cooling in the Atlantic Warm Pool (AWP) was significantly larger than the mean hemispheric cooling of

Data entered by name:

McGregor, Helen

Data entered by email:

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Main reference(s):

Richey, J.N., R.Z. Poore, B.P. Flower, T.M. Quinn, and D.J. Hollander. 2009. Regionally coherent Little Ice Age cooling in the Atlantic Warm Pool. Geophys. Res. Lett., 36, L21703, doi:10.1029/2009GL040445

Link to reference 1:

http://www.agu.org/pubs/crossref/2009/2009GL040445.shtml

Link to reference 2:

http://www.marine.usf.edu/PPBlaboratory/paleolab_pdfs/Richey%20et%20al%202009%20GRL.pdf

Data storage link 1:

http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:4260080828315186::::P1_STUDY_ID:10492

Comments:

No information on age model uncertainty

Current dating method:

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Annual snow acc rate:

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Category: Ocean2k