Proxy-Based Pacific SST ReconstructionsEntry ID: NOAA_NCDC_PALEO_2001-068
Abstract: We have produced three sets of reconstructed Pacific Basin SST field and error
estimates, based on three sets of observations. SST anomaly values
reconstructed on the basis of proxies are small, and the estimated error values
are large. These reconstructions each use limited data sets consisting of a
uniform type of proxies (specifically, stable isotopes of oxygen in corals;
ring width and density ... measurements in trees). The reconstructed SST fields are
provided (along with the analysis based on the instrumental data) as bases for
intercomparison of reconstruction methodologies and proxy types. Such
intercomparisons are essential for achieving the ultimate future goal:
obtaining the best possible reconstruction based on the most complete data set
of the proxies of various kinds.
We are grateful to the original proxy data contributors whose submissions to
the W-DCA made this project possible:
(1) Pac_ssta_instrum: Reduced-space, objective analysis of global, historical,
5-degree by 5-degree gridded, ship-based, monthly sea surface temperature
anomalies for January 1856 - December 1991 (Kaplan et al., 1998). The analysis
of Kaplan et al. (1998) is itself based on the Global Ocean Surface Temperature
Atlas (Bottomley et al., 1990). The data here are contributed as annual
average anomalies, based on an April-March year. (e.g. year 1856 is the
average anomaly for April 1856 through March 1857.) Monthly global gridded
analyses are available from the LDEO Data Catalog:
http://ingrid.ldeo.columbia.edu/SOURCES/.KAPLAN/.EXTENDED/ Data source for this
reconstruction is the Global Ocean Surface Temperature Atlas (Bottomley, 1990).
(2) Pac_ssta_coral: reconstruction of Pacific Basin SST field based on thirteen
annually averaged coral-derived oxygen isotope time series, using methods
described in Evans et al. 2000, 2001b. Input data are available from the W-DCA
for Paleoclimatology: (http://www.ngdc.noaa.gov/paleo/coral). The
reconstruction is calibrated and verified using the Pac_ssta_instrum dataset
(3) Pac_ssta_tree: reconstruction of Pacific Basin SST field based on fifteen
tree-ring proxy indicators, using methods described in Evans et al. 2001a,b.
Input data are described in Villalba et al. 2001 and in Evans et al. 2001, and
are available upon request from M.N. Evans. The reconstruction is calibrated
and verified using the Pac_ssta_instrum dataset described above.
Coral and tree-ring data age models for input data were assumed from the
primary literature describing the data: no attempt was made to adjust age
models provided for proxy data by the scientists who contributed the data.
Data Set Citation
Dataset Originator/Creator: Evans, M.N., A. Kaplan and M.A. Cane
Dataset Title: Proxy-Based Pacific SST Reconstructions
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-068
Dataset Release Date: 10/2001
Dataset Release Place: Boulder,CO
Dataset Publisher: IGBP PAGES/World Data Center A for Paleoclimatology
Issue Identification: 2001-068
Other Citation Details: NOAA/NCDC Paleoclimatology ProgramOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/sst_evans...
Paleo Temporal Coverage
Paleo Start Date: 400 ybp
Paleo Stop Date: 0 ybp
Latitude Resolution: 5 degrees
Longitude Resolution: 5 degrees
Horizontal Resolution Range: 500 km - < 1000 km or approximately 5 degrees - < 10 degrees
ISO Topic Category
Data Set Progress
Distribution Media: ftp
Distribution Format: text, netCDF
Laboratory of Tree-Ring Research University of Arizona
Province or State: AZ
Email: alexeyk at ldeo.columbia.edu
Lamont-Doherty Earth Observatory P.O. Box 1000 61 Route 9W
Province or State: NY
Postal Code: NY 10964-1000
Columbia University Lamont-Doherty Earth Observatory
Province or State: NY
Postal Code: 10964
Evans, M.N., A. Kaplan and M.A. Cane, 2002, Pacific sea surface temperature field reconstruction from coral delta 18O data using reduced space objective analysis, Paleoceanography, v.17, No. 1, February 2002. preprint available from http://www.ltrr.arizona.edu/~mevans/preprints/
Evans, M.N., A. Kaplan, M.A. Cane and R. Villalba, 2001, Globality and
Optimality in Climate Field Reconstructions from Proxy Data, in Inter-hemispheric Climate Linkages, V. Markgraf (ed.), Cambridge University
Press, Cambridge, UK, pp. 53-72, 2001a.
Evans, M.N., A. Kaplan and M.A. Cane, 2000, Intercomparison of coral oxygen isotope data and historical sea surface temperature (SST): Potential for coral-based SST field reconstructions, Paleoceanography, 15, 551--562, 2000.
Kaplan, A., M.A. Cane, Y. Kushnir, A.C. Clement, M.B. Blumenthal and B.
Rajagopalan, 1998, Analyses of global sea surface temperature 1856-1991, J. Geophys. Res., 103(C9), 18,567-18,589.
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Creation and Review Dates
DIF Creation Date: 2006-11-16
Last DIF Revision Date: 2006-12-01