| PALEOCEANOGRAPHY |
Pacific Pleistocene Primary Production Data
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de Garidel-Thoron, T., L. Beaufort, B.K. Linsley, and S. Dannenmann. 2001. Millenial-scale dynamics of the East Asian winter
monsoon during the last 200,000 years. Paleoceanography 16(5):491-503.
| Data Coverage |
North: 8.78 * South: 8.78 |
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West: 121.28 * East: 121.28 |
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Altitude: -3633 m |
Start Year: 200500 14C yr BP
* End Year: 4290 14C yr BP
Data: Please Cite Data Contributors!
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Summary: The primary productivity dynamics of the last 200,000 years in the Sulu Sea was reconstructed using the abundance of the coccolithophore
Florisphaera profunda in the IMAGES MD97-2141 core. We find that primary productivity was enhanced during glacial periods,
which we suggest is due to a stronger East Asian winter monsoon. During the last 80 kyr, eight significant increases in primary
productivity (PP) in the Sulu Sea are similar to East Asian winter monsoon changes recorded in Chinese loess. The PP maxima
are not linked with Heinrich events (HE) in the North Atlantic, although four PP peaks are synchronous with HE. The PP oscillations
have frequencies near those of the Dansgaard--Oeschger cycles in Northern Hemisphere ice records and indicate a teleconnection
of the East Asian winter monsoon with Greenland climate. In this Sulu Sea record the East Asian winter monsoon oscillates
with periodicities of ~6, 4.2--3.4, 2.3, and 1.5 kyr. In particular, the 1.5 kyr cycle exhibits a strong and pervasive signal
from stage 6 to the Holocene without any ice volume modulation. This stationarity suggests that the 1.5 kyr cycle is not driven
by some high-latitude forcing.
More Info on Paleoceanography Data |
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Parameters: Florisphaera profunda percent relative to the other coccoliths; calendar years before 1950AD; Primary Production (gC.m-2.a-1)
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Complete XML Record: noaa-ocean-2570
(Last Revised: 2007-12-21 )
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DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
325 Broadway, E/CC23
Boulder, CO 80305
USA
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| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
Phone: 303-497-6280
Fax: 303-497-6513
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