Untangling the Relationship Between AMOC Variability and North Atlantic Upper‐Ocean Temperature and Salinity

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Chiang, J. C. H. ; Cheng, W. ; Kim, W. M. ; Kim, S.
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)
• Description:
  The relationship between Atlantic meridional overturning circulation (AMOC) variability and high-latitude North Atlantic buoyancy changes is complicated by the latter both driving, and responding to, AMOC changes. A maximum covariance analysis applied to a 1,201-year preindustrial control simulation reveals two leading modes that separate these two distinct roles of North Atlantic temperature and salinity as related to AMOC variability. A linear combination of the two modes accounts for most of the variation of a widely used AMOC index. The same analysis applied to another control simulation known to possess two distinct regimes of AMOC variability—oscillatory and red-noise—
• Keywords:
  General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
• Source:
  Geophysical Research Letters, 48(14)
• DOI:
  https://doi.org/10.1029/2021gl093496
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Funding:
  Grant no. NA16OAR4310169 ; Grant no. NA16OAR4310170 ; Grant no. NA16OAR4310171
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:cb44610a97872ee807b4e942ab3426d6f2bc9bf98e3be210fd3285fd76aa0125
• Download URL:
  https://repository.library.noaa.gov/view/noaa/52845/noaa_52845_DS1.pdf
• File Type:
  [PDF - 1.21 MB ]