Science Keywords>PALEOCLIMATE
|
Arabian Sea Holocene G. bulloides Data Entry ID: NOAA_NCDC_PALEO2003-041 |
||||||||||||
|
[
Get Data
]
[
Update this Record
]
|
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/
| |||
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.
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
| [ Update this Record ] |
