noaa-lake-6206
Lake Tanganyika 60,000 Year TEX86 LST and dD Data
Tierney, J.E.; Russell, J.M.; Huang, Y.; Sinninghe Damste, J.S.; Hopmans, E.C.; Cohen, A.S.
Lake Tanganyika 60,000 Year TEX86 LST and dD Data
2008-12-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/6206
Investigator
J.E.
Tierney
Investigator
J.M.
Russell
Investigator
Y.
Huang
Investigator
J.S.
Sinninghe Damste
Investigator
E.C.
Hopmans
Investigator
A.S.
Cohen
earth science
paleoclimate
climate reconstructions|paleolimnology
lake surface temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleolimnology,null,null,N,TEX86 method of Tierney (2010)
earth science
paleoclimate
paleolimnology
delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,corrected,null,N,corrected for biosynthetic fractionation and global ice volume
earth science
paleoclimate
paleolimnology
branched and isoprenoid tetraether index,sediment,null,dimensionless,null,paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
lake surface temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleolimnology,null,null,N,TEX86 method of Powers (2005)
earth science
paleoclimate
paleolimnology
delta 13C,C28 n-alkanoic acid,null,per mil VPDB,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
tetraether index of 86 carbon atoms,sediment,null,dimensionless,null,paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,corrected,null,N,corrected for global ice volume
earth science
paleoclimate
paleolimnology
reconstruction
geoscientificInformation
Air Temperature Reconstruction
PAGES 2k Network
PAGES Africa 2k
59450 cal yr BP
1350 cal yr BP
Complete
-6.71378
-6.71378
29.832616
29.832616
773
773
Continent
Africa
Eastern Africa
Lake Tanganyika
Lake Tanganyika Core NP04-KH3>LATITUDE -6.71378>LONGITUDE 29.832616
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
Tierney, J.E., J.M. Russell, Y. Huang, J.S. Sinninghe Damsté,
E.C. Hopmans, and A.S. Cohen. 2008.
Northern Hemisphere Controls on Tropical Southeast African
Climate During the Past 60,000 Years.
Science, Vol. 322, No. 5899, pp. 252-255, 10 October 2008.
doi: 10.1126/science.1160485
The processes that control climate in the tropics are poorly understood.
We applied compound-specific hydrogen isotopes (dD) and the TEX86
(tetraether index of 86 carbon atoms) temperature proxy to sediment
cores from Lake Tanganyika to independently reconstruct precipitation
and temperature variations during the past 60,000 years. Tanganyika
temperatures follow Northern Hemisphere insolation and indicate that
warming in tropical southeast Africa during the last glacial termination
began to increase ~3000 years before atmospheric carbon dioxide
concentrations. dD data show that this region experienced abrupt changes
in hydrology coeval with orbital and millennial-scale events recorded in
Northern Hemisphere monsoonal climate records. This implies that
precipitation in tropical southeast Africa is more strongly controlled
by changes in Indian Ocean sea surface temperatures and the winter
Indian monsoon than by migration of the Intertropical Convergence Zone.
STUDY NOTES: This dataset includes TEX86 and compound-specific D/H data from
Lake Tanganyika cores KH3 and KH4. The TEX86 temperature data
are provided with both the original Powers et al. 2005 calibration
and the new Tierney et al. (2010) calibration.
Chronology was constrained by 26 radiocarbon dates on KH3
and 7 additional dates on KH4. The TEX86 data files include
the TEX86 index value, calibration to temperature utilizing the
lakes calibrations of Powers et al., 2005, and Tierney et al. 2010,
and the Branched and Isoprenoid Tetraether (BIT) index value.
The BIT index, ranging from 0-1, is an indicator of the relative
amount of soil-derived vs. aquatic GDGTs, with a value of 0
indicative of completely aquatic sources, and 1 indicating
completely soil-derived sources (Hopmans et al. 2004).
The data for KH4 also includes the modified TEX temperatures
(T +0.5º) to account for site offset. D/H values were measured on
the C28 n-acid and are expressed in per mil vs. VSMOW. The carbon
isotopes were also measured on the C-28 fatty acid expressed in
per mil vs. VPDB.
Two corrections have been applied to the dD data. "dDIVonly" refers
to the D/H data corrected for global ice volume, and "dDIVandbio"
refers to the D/H data corrected for biosynthetic fractionation
and global ice volume. These corrections are described in the
Tierney et al. QSR 2010 paper.
Data from cores NP04-KH04-3A-1K (KH3) and NP04-KH04-4A-1K (KH4),
Kalya Horst, Lake Tanganyika.
Core (KH3): 6º42.827'S, 29º49.957'E, 773m elev, 644m depth.
Core (KH4): 6º36.101'S, 30º00.696'E, 773m elev, 349m depth.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2008.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2008.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11