noaa-loess-12971
Chinese Loess Plateau 60KYr Grain Size Data
Sun, Y.; Clemens, S.C.; Morrill, C.; Lin, X.P.; Wang, X.L.; An, Z.
Chinese Loess Plateau 60KYr Grain Size Data
2012-05-30
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12971
Investigator
Y.
Sun
Investigator
S.C.
Clemens
Investigator
C.
Morrill
Investigator
X.P.
Lin
Investigator
X.L.
Wang
Investigator
Z.
An
earth science
paleoclimate
loess
magnetic susceptibility,loess,null,unspecified unit,null,loess,null,null,N,Gulang
earth science
paleoclimate
loess
depth,null,null,meter,null,loess,null,null,N,Jingyuan
earth science
paleoclimate
loess
age,null,null,calendar kiloyear before present,null,loess,null,null,N,Jingyuan OSL age
earth science
paleoclimate
loess
depth,null,null,meter,null,loess,null,null,N,Gulang
earth science
paleoclimate
loess
age,null,null,calendar kiloyear before present,null,loess,null,null,N,Gulang OSL age
earth science
paleoclimate
loess
magnetic susceptibility,loess,null,unspecified unit,null,loess,null,null,N,Jingyuan
earth science
paleoclimate
loess
grain size mean,loess,null,micrometer,null,loess,null,null,N,Jingyuan
earth science
paleoclimate
loess
grain size mean,loess,null,micrometer,null,loess,null,null,N,Gulang
earth science
paleoclimate
loess
geoscientificInformation
Meridional Overturning Circulation (MOC)
Monsoon
abrupt climate change
60100 cal yr BP
2000 cal yr BP
Complete
36.35
37.49
102.88
104.6
2210
2400
Continent
Asia
Eastern Asia
China
Jingyuan>LATITUDE 36.35>LONGITUDE 104.6
Continent
Asia
Eastern Asia
China
Gulang>LATITUDE 37.49>LONGITUDE 102.88
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
Sun, Y.B., S.C. Clemens, C. Morrill, X.P. Lin, X.L. Wang,
and Z.S. An. 2012.
Influence of Atlantic meridional overturning circulation
on the East Asian winter monsoon.
Nature Geoscience, Vol. 5, pp. 46-49.
DOI: 10.1038/NGEO1326
The last glacial period was characterized by abrupt, millennial-scale
climate change. These climate fluctuations are particularly pronounced
in records of the East Asian monsoon system, and seem to be linked to
changes in North Atlantic circulation. Here we present records of
grain size variations from the northwestern Chinese Loess Plateau,
dated using optically stimulated luminescence. We reconstruct changes
in the strength of the East Asian winter monsoon over the past 60,000
years and find reconstructed millennial-scale variations that are
broadly correlated with temperature variations over Greenland,
suggesting a common forcing. We investigate the effect of a slow-down
of Atlantic meridional overturning circulation on the monsoon system
using a coupled climate model simulation with added freshwater flux
into the northern North Atlantic, and find a strengthening winter
monsoon circulation over the regions that supply dust to the Loess
Plateau and a reduction in summer monsoon precipitation over East Asia.
We conclude that Atlantic meridional overturning circulation
is a driver of abrupt change in the East Asian winter and summer
monsoon systems, and that the northern westerlies play a role
in transmitting this signal from the North Atlantic to the Asian
monsoon regions.
STUDY NOTES: Grain size data for the past 60,000 years from 2 loess sections
in the northwestern Chinese Loess Plateau. 20-m sampling pits
were excavated at Jingyuan and Gulang, with age models developed
via 40 optically stimulated luminescence (OSL) measurements.
Grain size was measured on 2000 samples taken at 2-cm. intervals.
Grain size data is interpreted as a winter monsoon strength proxy.
Jingyuan, Chinese Loess Plateau: 36.35°N, 104.6°E, 2210 m elev.
Gulang, Chinese Loess Plateau: 37.49°N, 102.88°E, 2400 m elev.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11