[Keyword='GLOBAL WARMING']
Paleocene-Eocene Thermal Maximum Isotope and Mg/Ca Data
Entry ID: NOAA_NCDC_PALEO_2005-058

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Summary
Abstract: A rapid increase in greenhouse gas levels is thought to have fueled global
warming at the Paleocene-Eocene Thermal Maximum (PETM). Foraminiferal
magnesium/calcium ratios indicate that bottom waters warmed by 4 to 5C,
similar to tropical and subtropical surface ocean waters, implying no
amplification of warming in high-latitude regions of deep-water formation
under ice-free conditions. Intermediate waters warmed before the carbon
isotope excursion, in association with downwelling in the North Pacific and
reduced Southern Ocean convection, supporting changing circulation as the
trigger for methane hydrate release. A switch to deep convection in the North
Pacific at the PETM onset could have amplified and sustained warming.
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Description: Access to data and documentation.
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates   
  N: 32.65   S: 32.65   E: 158.51   W: 158.51
Max Depth: 2387 M
  N: -28.03   S: -28.03   E: 1.77   W: 1.77
Max Depth: 4428 M
  N: -18.43   S: -18.43   E: -17.55   W: -17.55
Max Depth: 1530 M

Data Set Citation
Dataset Originator/Creator: Tripati, A. and H. Elderfield
Dataset Title: Paleocene-Eocene Thermal Maximum Isotope and Mg/Ca Data
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-058
Dataset Release Date: 2005-08
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2005-058
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/tri...
Paleo Temporal Coverage
Location Keywords
Science Keywords
ISO Topic Category
Project
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
NOAA/NCDC
Data Center
World Data Center for Paleoclimatology, Boulder Supplemental Info
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
Distribution
Distribution Media: ftp
Fees: none
Personnel
ARADHNA TRIPATI
Role: INVESTIGATOR
Contact Address:
Department of Earth Sciences
University of Cambridge
Downing Street
City: Cambridge
Postal Code: CB2 3EQ
Country: United Kingdom
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Publications/References
Tripati, A. and H. Elderfield. 2005. Deep-Sea Temperature and Circulation
Changes at the Paleocene-Eocene Thermal Maximum. Science, Vol. 308, pp.
1894, 24 June 2005.
Creation and Review Dates
DIF Creation Date: 2006-12-28
Last DIF Revision Date: 2007-08-03

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