Gulf of Guinea MD03-2707 d18O, Ba/Ca, and Mg/Ca Data and SST/West African Monsoon Reconstruction

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Weldeab, S., D.W. Lea, R.R. Schneider, and N. Andersen
Publication_Date: August 2007
Title: Gulf of Guinea MD03-2707 d18O, Ba/Ca, and Mg/Ca Data and SST/West African Monsoon Reconstruction
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2007-067
Issue_Identification: 2007-067
Publication_Information:
Publication_Place: Boulder, CO
Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Other_Citation_Details:
NOAA/NCDC Paleoclimatology Program
Online_Linkage: http://www.ncdc.noaa.gov/paleo/pubs/weldeab2007/weldeab2007.html
Description:
Abstract:
A detailed reconstruction of West African monsoon hydrology over the past 155,000 years suggests a close linkage to northern high-latitude climate oscillations. Ba/Ca ratio and oxygen isotope composition of planktonic foraminifera in a marine sediment core from the Gulf of Guinea, in the eastern equatorial Atlantic (EEA), reveal centennial- scale variations of riverine freshwater input that are synchronous with northern high-latitude stadials and interstadials of the penultimate interglacial and the last deglaciation. EEA Mg/Ca-based sea surface temperatures (SSTs) were decoupled from northern high- latitude millennial-scale fluctuation and primarily responded to changes in atmospheric greenhouse gases and low-latitude solar insolation. The onset of enhanced monsoon precipitation lags behind the changes in EEA SSTs by up to 7000 years during glacial-interglacial transitions. This study demonstrates that the stadial-interstadial and deglacial climate instability of the northern high latitudes exerts dominant control on the West African monsoon dynamics through an atmospheric linkage.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Weldeab, S., D.W. Lea, R.R. Schneider, and N. Andersen. 2007. 155,000 Years of West African Monsoon and Ocean Thermal Evolution. Science, Vol. 316, pp. 1303-1307, 1 June 2007. doi: 10.1126/science.1140461
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 9.39
East_Bounding_Coordinate: 9.39
North_Bounding_Coordinate: 2.5
South_Bounding_Coordinate: 2.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > MONSOONS
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
Theme_Keyword: EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > ISOTOPES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > MICROFOSSILS
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > OXYGEN ISOTOPES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > RADIOCARBON
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > SEDIMENTS
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > PALEOCLIMATE RECONSTRUCTIONS > OCEAN SALINITY RECONSTRUCTION
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > PALEOCLIMATE RECONSTRUCTIONS > SEA SURFACE TEMPERATURE RECONSTRUCTION
Theme_Keyword: PAGES > PAST GLOBAL CHANGES, IGBP
Theme_Keyword: Gulf Of Guinea
Theme_Keyword: West African Monsoon
Theme_Keyword: Sst
Theme_Keyword: Mg/ca
Theme_Keyword: Ba/ca
Theme_Keyword: D18o
Theme_Keyword: D14c
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Access_Constraints: Not Available
Use_Constraints:
Institut Francais pour la Recherche et la Technologie Polaires for Calypso coring through European Union grant HPRI-2001-00120 (R.R.S.). Deutsche Forschungsgemeinschaft postdoctoral fellowship grant WE 2686/2-1(S.W.). US National Science Foundation grants OCE0317611 and OCE0502609 (D.W.L.).
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SYEE WELDEAB
Contact_Person_Primary:
Contact_Person: DAVID W. LEA
Contact_Person_Primary:
Contact_Person: RALPH R. SCHNEIDER
Contact_Person_Primary:
Contact_Person: NILS ANDERSEN
Contact_Position: INVESTIGATOR
Contact_Position: INVESTIGATOR
Contact_Position: INVESTIGATOR
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Earth Science and Marine Science Institute
Address: University of California
City: Santa Barbara
State_or_Province: CA
Postal_Code: 93106-9630
Country: USA
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Geological Sciences and Marine Science Institute
Address: University of California
City: Santa Barbara
State_or_Province: CA
Postal_Code: 93106
Country: USA
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Institut fur Geowissenschaften
Address: niversitat Kiel
City: Kiel
Country: Germany
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Leibniz-Labor fur Altersbestimmung und Isotopenforschung
Address: Universitat Kiel
City: Kiel
Country: Germany
Contact_Voice_Telephone: (805) 893-8665
Contact_Facsimile_Telephone: (805) 893-2314
Contact_Electronic_Mail_Address: lea@magic.ucsb.edu
Browse_Graphic:
Browse_Graphic_File_Name: http://www.ncdc.noaa.gov/paleo/pubs/weldeab2007/fig1.jpg
Browse_Graphic_File_Description:
Annual SSS in the Gulf of Guinea, MD03-2707 core location, and drainage basin of Niger and Sanaga rivers from: http://www.ncdc.noaa.gov/paleo/pubs/weldeab2007/weldeab2007.html
Browse_Graphic_File_Type: JPEG
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: WDC/PALEOCLIMATOLOGY, BOULDER > World Data Center for Paleoclimatology, Boulder
Contact_Person: WDC/PALEOCLIMATOLOGY, BOULDER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: World Data Center for Paleoclimatology
Address: NOAA/NCDC Code E/GCx3
Address: 325 Broadway
City: Boulder
State_or_Province: CO
Postal_Code: 80303
Country: USA
Contact_Voice_Telephone: +1 (303) 497-6160
Contact_Facsimile_Telephone: +1 (303) 497-6513
Contact_Electronic_Mail_Address: paleo@noaa.gov
Resource_Description: NOAA_NCDC_PALEO_2007-067
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ascii, excel
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.ncdc.noaa.gov/paleo/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributio...
Access_Instructions:
Access to data and documentation
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.ncdc.noaa.gov/paleo/pubs/weldeab2007/we...
Access_Instructions:
Access to documentation
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20070820
Metadata_Review_Date: 20070820
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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