noaa-lake-10393
Valles Caldera Pleistocene Interglacial Multiproxy Sediment Data
Fawcett, P.J.; Werne, J.P.; Anderson, R.S.; Heikoop, J.M.; Brown, E.T.; Berke, M.A.; Smith, S.J.; Goff, F.; Donohoo-Hurley, L.; Cisneros-Dozal, L.M.; Schouten, S.; Sinninghe Damsté, J.S.; Huang, Y.; Toney, J.; Fessenden, J.; WoldeGabriel, G.; Atudorei, V.; Geissman, J.W.; Allen, C.
Valles Caldera Pleistocene Interglacial Multiproxy Sediment Data
2011-03-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10393
Investigator
P.J.
Fawcett
Investigator
J.P.
Werne
Investigator
R.S.
Anderson
Investigator
J.M.
Heikoop
Investigator
E.T.
Brown
Investigator
M.A.
Berke
Investigator
S.J.
Smith
Investigator
F.
Goff
Investigator
L.
Donohoo-Hurley
Investigator
L.M.
Cisneros-Dozal
Investigator
S.
Schouten
Investigator
J.S.
Sinninghe Damsté
Investigator
Y.
Huang
Investigator
J.
Toney
Investigator
J.
Fessenden
Investigator
G.
WoldeGabriel
Investigator
V.
Atudorei
Investigator
J.W.
Geissman
Investigator
C.
Allen
earth science
paleoclimate
climate reconstructions|paleolimnology
pH,glycerol dialkyl glycerol tetraether index|soil,null,dimensionless,null,climate reconstructions|paleolimnology,null,null,N,CBT
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,calendar kiloyear before present,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,elemental analysis,N,total organic carbon/total organic nitrogen
earth science
paleoclimate
paleolimnology
magnetic susceptibility,sediment,null,dimensionless,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
calcium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
delta 13C,organic matter,null,per mil,null,paleolimnology,null,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
surface air temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,annual,climate reconstructions|paleolimnology,null,null,N,MBT/CBT
earth science
paleoclimate
paleolimnology
silicon/titanium,sediment,null,dimensionless,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
depth,null,null,meter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
delta 15N,organic matter,null,per mil,null,paleolimnology,null,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
paleolimnology
organic carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
Air Temperature Reconstruction
drought
551990 cal yr BP
363030 cal yr BP
Complete
35.86
35.86
-106.45
-106.45
Continent
North America
United States Of America
New Mexico
Valles Caldera>LATITUDE 35.86>LONGITUDE -106.45
None
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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
Fawcett, P.J., J.P. Werne, R.S. Anderson, J.M. Heikoop, E.T. Brown,
M.A. Berke, S.J. Smith, F. Goff, L. Donohoo-Hurley, L.M. Cisneros-Dozal,
S. Schouten, J.S. Sinninghe Damsté, Y. Huang, J. Toney, J. Fessenden,
G. WoldeGabriel, V. Atudorei, J.W. Geissman, and C.D. Allen. 2011.
Extended megadroughts in the southwestern United States during
Pleistocene interglacials.
Nature, Vol. 470, pp. 518-521, 24 February 2011.
doi:10.1038/nature09839
The potential for increased drought frequency and severity linked
to anthropogenic climate change in the semi-arid regions of the
southwestern United States (US) is a serious concern. Multi-year
droughts during the instrumental period and decadal-length droughts
of the past two millennia were shorter and climatically different
from the future permanent, 'dust-bowl-like' megadrought conditions,
lasting decades to a century, that are predicted as a consequence
of warming. So far, it has been unclear whether or not such
megadroughts occurred in the southwestern US, and, if so, with what
regularity and intensity. Here we show that periods of aridity
lasting centuries to millennia occurred in the southwestern US
during mid-Pleistocene interglacials. Using molecular palaeo-
temperature proxies to reconstruct the mean annual temperature (MAT)
in mid-Pleistocene lacustrine sediment from the Valles Caldera,
New Mexico, we found that the driest conditions occurred during
the warmest phases of interglacials, when the MAT was comparable
to or higher than the modern MAT. A collapse of drought-tolerant
C4 plant communities during these warm, dry intervals indicates
a significant reduction in summer precipitation, possibly in
response to a poleward migration of the subtropical dry zone.
Three MAT cycles ~2°C in amplitude occurred within Marine Isotope
Stage (MIS) 11 and seem to correspond to the muted precessional
cycles within this interglacial. In comparison with MIS 11, MIS 13
experienced higher precessional-cycle amplitudes, larger variations
in MAT (4-6°C) and a longer period of extended warmth, suggesting
that local insolation variations were important to interglacial
climatic variability in the southwestern US. Comparison of the
early MIS 11 climate record with the Holocene record shows many
similarities and implies that, in the absence of anthropogenic
forcing, the region should be entering a cooler and wetter phase.
STUDY NOTES: High-resolution climate record from an 82m lacustrine sediment
core (VC-3) from the Valles Caldera, New Mexico, spanning two
mid-Pleistocene glacial cycles from MIS 14 to MIS 10.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/newmexico/valles-caldera2011.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/newmexico/valles-caldera2011.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11