Multiproxy Reconstruction of Pliocene North Atlantic Sea Surface Temperatures and Implications for Rainfall in North Africa

Details

• Journal Title:
  Paleoceanography and Paleoclimatology
• Personal Author:
  Wycech, J. B. ; Rajagopalan, B. ; Molnar, P. H. ; Gill, E. ; Marchitto, T. M.
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information)
• Description:
  Wetter conditions in the African Sahel during the Pliocene (5.3–2.6 Ma) likely played an important role in hominid evolution and may be explained by warm North Atlantic sea-surface temperatures (SSTs), similar to the modern warm phase of the Atlantic multidecadal oscillation (AMO). We reconstruct Pliocene North Atlantic (2°S to 60°N) SSTs through a multiproxy reduced-dimension methodology that combines two new foraminiferal ( Trilobatus sacculifer ) Mg/Ca-based SST records from Ocean Drilling Program sites in the northwestern Atlantic (Site 997) and Gulf of Mexico (Site 625) with previously published multi-proxy SST records from seven additional Atlantic sites. Our Pliocene reconstructions indicate that the
• Keywords:
  Atmospheric Science Oceanography Paleontology
• Source:
  Paleoceanography and Paleoclimatology, 37(12)
• DOI:
  https://doi.org/10.1029/2022pa004424
• ISSN:
  2572-4517 ; 2572-4525
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:21aa52ceb190a681ffae749592b011691d05e93571ddb874cdee45614cf7e2d0
• Download URL:
  https://repository.library.noaa.gov/view/noaa/55100/noaa_55100_DS1.pdf
• File Type:
  [PDF - 5.75 MB ]