noaa-coral-15238
Ha'afera Island, Tonga Annual Average Sr/Ca Porites lutea Data from 1791-2003 AD
Wu, H.C.; Linsley, B.K.; Dassié, E.P.; Schiraldi Jr., B.; deMenocal, P.B.
Ha'afera Island, Tonga Annual Average Sr/Ca Porites lutea Data from 1791-2003 AD
2013-10-24
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/15238
Investigator
H.C.
Wu
Investigator
B.K.
Linsley
Investigator
E.P.
Dassié
Investigator
B.
Schiraldi Jr.
Investigator
P.B.
deMenocal
earth science
paleoclimate
corals and sclerosponges
age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null
earth science
paleoclimate
corals and sclerosponges
strontium/calcium,Porites lutea,null,millimole per mole,null,corals and sclerosponges,averaged,inductively-coupled plasma atomic emission spectroscopy,N,null
earth science
paleoclimate
corals and sclerosponges
trace metals
geoscientificInformation
1791 AD
2003 AD
159 cal yr BP
-53 cal yr BP
Complete
-19.933333
-19.933333
-174.716667
-174.716667
-1
-1
Ocean
Pacific Ocean
South Pacific Ocean
Polynesia
Tonga
Ha'afera Island>LATITUDE -19.933333>LONGITUDE -174.716667
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Wu, H.C., B.K. Linsley, E.P. Dassié, B. Schiraldi, and P.B. deMenocal. 2013. Oceanographic variability in the South Pacific Convergence Zone region over the last 210 years from multi-site coral Sr/Ca records. Geochem. Geophys. Geosyst., 14, 1435-1453. doi:10.1029/2012GC004293
In the South Pacific Convergence Zone (SPCZ), the variability in a sub-seasonally resolved microatoll Porites colony Sr/Ca record from Tonga and a previously published high-resolution record from Fiji are strongly influenced by sea surface temperature (SST) over the calibration period from 1981 to 2004 (R^2 = 0.67-0.68). However, the Sr/Ca-derived SST correlation to instrumental SST decreases back in time. The lower frequency secular trend (~1 ºC) and decadal-scale (~2-3 ºC) modes in Sr/Ca-derived SST are almost two times larger than that observed in instrumental SST. The coral Sr/Ca records suggest that local effects on SST generate larger amplitude variability than gridded SST products indicate. Reconstructed d18O of seawater (d18Osw) at these sites correlate with instrumental sea surface salinity (SSS; r = 0.64-0.67) but not local precipitation (r = -0.10 to -0.22) demonstrating that the advection and mixing of different salinity water masses may be the predominant control on d18Osw in this region. The Sr/Ca records indicate SST warming over the last 100 years and appears to be related to the expansion of the western Pacific warm pool (WPWP) including an increasing rate of expansion in the last ~20 years. The reconstructed d18Osw over the last 100 years also shows surface water freshening across the SPCZ. The warming and freshening of the surface ocean in our study area suggests that the SPCZ has been shifting (expanding) southeast, possibly related to the southward shift and intensification of the South Pacific gyre over the last 50 years in response to strengthened westerly winds.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wu2013/wu2013.txt
USA/NOAA
DIF
Version 9.8.4
2019-01-31
2019-01-31