6k North Atlantic Sea-Surface Temperatures
Entry ID: 6K_N_ATLANTIC_SST

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Summary
Abstract: The 6k data are based on two types of data: 1) alkenones, a geochemical proxy,
and 2) transfer function estimates of sea-surface temperature based on faunal
assemblages of planktic foraminifers. All alkenone data have previously been
compiled within the GHOST project (Kim et al., 2004a,b)
(http://www.pangaea.de/Projects/GHOST/). For the foraminiferal data, raw census
data were composed and two different transfer function techniques (Maximum
Likelihood (ML) and the Modern Analog Technique (MAT)) were used to calculate
the sea-surface temperatures to illustrate, at least to some extent, the
magnitude of the differences in estimated SST that are related to the choice of
calculation method. Hence, in the data set you will find both the two separate
calculations for the foraminifers as well as the average 6k value combining
data from the two different techniques. When it comes to errors of different
SST estimation techniques, it is fair to say that most methods operate with a
statistical error close to +- 1 degree C. However, due to the geographical
autocorrelation these types of data possess, the assumption of data
independence is violated and the errors are most likely underestimated.

There are 17 alkenone records and 12 foraminiferal records in the data set.
From a few of the cores present in the data set have both alkenone and
foraminiferal data have been derived.

The data set is presented on three work sheets in an Excel workbook. The fist
page contains average values for 6k, as well as modern atlas data for the
selected sites, whereas the second and third sheets contain the actual Holocene
time series of alkenone and planktic foraminiferal data, respectively.

Related URL
Link: GET DATA
Description: Access to 6k North Atlantic sea-surface temperatures data and documentation


Link: VIEW PROJECT HOME PAGE
Description: Paleoclimate Modelling Intercomparison Project Phase II home page


Link: VIEW RELATED INFORMATION
Description: Additional paleogeographic databases at the University of Bristol


Link: VIEW RELATED INFORMATION
Description: Global Holocene Spatial and Temporal Climate Variability (GHOST)
Note: site is in German. Data is also available for Holocene SST data and 10ka
SST data


Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Kim, J.-H. and R.R. Schneider
Dataset Title: 6k North Atlantic sea-surface temperatures
Dataset Series Name: Paleoclimate Modelling Intercomparison Project (PMIP) Phase II
Dataset Release Place: France
Dataset Publisher: PMIP 2
Online Resource: http://www-lsce.cea.fr/pmip2/synth/northatlantic6ksst.shtml


Paleo_Temporal_Coverage
Paleo Start Date: 6000 ybp
Paleo Stop Date: 0 ybp
Chrono Unit:


Location Keywords
GEOGRAPHIC REGION > GLOBAL OCEAN


Science Keywords
OCEANS >OCEAN TEMPERATURE >SEA SURFACE TEMPERATURE    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION    [Definition]
BIOLOGICAL CLASSIFICATION >PROTISTS >AMOEBOIDS >FORAMINIFERS    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
OCEANS


Project
IPCC >Intergovernmental Panel on Climate Change    [Information]
PMIP >Paleoclimate Modelling Intercomparison Project    [Information]
GHOST >Global Holocene Spatial and Temporal Climate Variability    [Information]


Access Constraints
In order to download the data you will need a password. You can obtain the
password by contacting Carin Andersson (carin dot andersson at bjerknes dot
uib dot no).


Use Constraints
If you wish to use these data as a diagnostic, please cite Kim et al.,
(2004a,b) , and this website
(http://www.bridge.bris.ac.uk/resources/databases.htm) as the source.


Keywords
SST reconstruction
alkenones
planktic foraminifers
GHOST project


Data Set Progress
IN WORK


Originating Center
U. Bristol


Data Center
Paleoclimate Modelling Intercomparison Project    [Information]
Data Center URL: http://pmip.lsce.ipsl.fr/

Data Center Personnel
Name: SYLVIE JOUSSAUME
Email: sjpmip at lsce.saclay.cea.fr



Distribution
Distribution_Media: online
Distribution_Size: 273 kb
Distribution_Format: Excel
Fees: none


Personnel
SANDY P. HARRISON
Role: TECHNICAL CONTACT
Phone: +44 (0)117 33 17223
Fax: +44 (0)117 928 7878
Email: sandy.harrison at bristol.ac.uk
Contact Address:
BRIDGE
School of Geographical Sciences
University of Bristol
University Road
City: Bristol
Postal Code: BS8 1SS
Country: United Kingdom


MARK CREIGHTON
Role: TECHNICAL CONTACT
Email: mark.creighton at bristol.ac.uk
Contact Address:
BRIDGE
School of Geographical Sciences
University of Bristol
University Roa
City: Bristol
Postal Code: BS8 1SS
Country: United Kingdom


Publications/References
Kim, J.-H. and R.R. Schneider (2004a), A GHOST global database for alkenone-derived 6ka sea-surface temperatures., http://www.pangaea.de/Projects/GHOST/

Kim, J.-H. and R.R. Schneider (2004b), GHOST global database for alkenone-derived Holocene sea-surface temperature records, http://www.pangaea.de/Projects/GHOST/

Kim, J.-H. and R.R. Schneider (2004), GHOST global database for alkenone-derived 10ka sea-surface temperatures, http://www.pangaea.de/Projects/GHOST/.

Creation and Review Dates
DIF Creation Date: 2006-10-18
Last DIF Revision Date: 2011-04-07

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