Arabian Sea Holocene G. bulloides Data
Entry ID: NOAA_NCDC_PALEO2003-041

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Summary
Abstract: Time series of G. bulloides percent in the Arabian Sea during the past
10,000 years, influenced by upwelling driven by the SW summer monsoon
winds.

Abstract (from the online documentation):
During the last ice age, the Indian Ocean southwest monsoon exhibited
abrupt changes that were closely correlated with millennial-scale
climate events in the North Atlantic region, suggesting a mechanistic
link. In the Holocene epoch, which had a more stable climate, the
amplitude of abrupt changes in North Atlantic climate was much
smaller, and it has been unclear whether these changes are related to
monsoon variability. Here we present a continuous record of
centennial-scale monsoon variability throughout the Holocene from
rapidly accumulating and minimally bioturbated sediments in the anoxic
Arabian Sea. Our monsoon proxy record reveals several intervals of
weak summer monsoon that coincide with cold periods documented in the
North Atlantic regio - including the most recent climate changes from
the Medieval Warm Period to the Little Ice Age and then to the
present. We therefore suggest that the link between North Atlantic
climate and the Asian monsoon is a persistent aspect of global
climate.

Related URL
Link: GET DATA
Description: Access to data and documentation


Geographic Coverage
 N: 18.05 S: 18.05  E: 57.6  W: 57.6
 Min Depth: 0 M  Max Depth: 808 M

Data Set Citation
Dataset Originator/Creator: Gupta, A.K., et al., 2003
Dataset Title: Arabian Sea Holocene G. bulloides Data
Dataset Series Name: IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2003-041
Dataset Release Date: June 2003
Dataset Release Place: Boulder, CO
Dataset Publisher: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/gup...


Paleo_Temporal_Coverage
Paleo Start Date: 10.8 ka
Paleo Stop Date: 0 ka
Chrono Unit:


Location Keywords
OCEAN > INDIAN OCEAN > ARABIAN SEA


Science Keywords
PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >STRATIGRAPHIC SEQUENCE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
OCEANS


Platform
SHIPS    [Information]


Instrument
SEDIMENT CORERS    [Information]


Project
PAGES >Past Global Changes, IGBP    [Information]


Keywords
G. bulloides
monsoon winds
rapid climate change


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA


Personnel
ANIL K. GUPTA
Role: INVESTIGATOR
Contact Address:
Indian Institute of Technology
City: Kharagpur
Postal Code: 721302
Country: India


DAVID M. ANDERSON
Role: INVESTIGATOR
Phone: 303.497.6237
Fax: 303.497.6513
Email: david.m.anderson at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
National Climatic Data Center
325 Broadway, Code E/CC23
City: Boulder
Province or State: CO
Postal Code: 80305-3328
Country: United States


JONATHAN T. OVERPECK
Role: INVESTIGATOR
Email: jto at email.arizona.edu
Contact Address:
Institute of the Environment
Department of Geosciences
University of Arizona
City: Tucson
Province or State: AZ
Postal Code: 85721-0077
Country: USA


Publications/References
Gupta, A.K., D.M. Anderson, and J.T. Overpeck, 2003. Abrupt changes
in the Asian southwest monsoon during the Holocene and their links to
the North Atlantic Ocean. Nature, 421:354-357.

Creation and Review Dates
DIF Creation Date: 2004-03-15
Last DIF Revision Date: 2012-10-18

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