View in EDS PDF Full Text

Loop Current Growth and Eddy Shedding Using Models and Observations: Numerical Process Experiments and Satellite Altimetry Data.

Saved in:
Bibliographic Details
Title: Loop Current Growth and Eddy Shedding Using Models and Observations: Numerical Process Experiments and Satellite Altimetry Data.
Authors: Chang, Yu-Lin, Oey, L.-Y.
Source: Journal of Physical Oceanography. Mar2013, Vol. 43 Issue 3, p669-689. 21p.
Subjects: Loop Current, Trade winds, Gravity, Ocean temperature
Geographic Terms: Gulf of Mexico, Yucatán Channel
Abstract: Recent studies on Loop Current's variability in the Gulf of Mexico suggest that the system may behave with some regularity forced by the biannually varying trade winds. The process is analyzed here using a reduced-gravity model and satellite data. The model shows that a biannual signal is produced by vorticity and transport fluctuations in the Yucatan Channel because of the piling up and retreat of warm water in the northwestern Caribbean Sea forced by the biannually varying trade wind. The Loop grows and expands with increased northward velocity and cyclonic vorticity of the Yucatan Current, and eddies are shed when these are near minima. Satellite sea surface height (SSH) data from 1993 to 2010 are analyzed. These show, consistent with the reduced-gravity experiments and previous studies, a (statistically) significant asymmetric biannual variation of the growth and wane of Loop Current: strong from summer to fall and weaker from winter to spring; the asymmetry being due to the asymmetry that also exists in the long-term observed wind. The biannual signal is contained in the two leading EOF modes, which together explain 47% of the total variance, and which additionally describe the eddy shedding and westward propagation from summer to fall. The EOFs also show connectivity between Loop Current and Caribbean Sea's variability by mass and vorticity fluxes through the Yucatan Channel. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Physical Oceanography is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 86690087
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Loop Current Growth and Eddy Shedding Using Models and Observations: Numerical Process Experiments and Satellite Altimetry Data.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Chang%2C+Yu-Lin%22">Chang, Yu-Lin</searchLink><br /><searchLink fieldCode="AR" term="%22Oey%2C+L%2E-Y%2E%22">Oey, L.-Y.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Physical+Oceanography%22">Journal of Physical Oceanography</searchLink>. Mar2013, Vol. 43 Issue 3, p669-689. 21p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Loop+Current%22">Loop Current</searchLink><br /><searchLink fieldCode="DE" term="%22Trade+winds%22">Trade winds</searchLink><br /><searchLink fieldCode="DE" term="%22Gravity%22">Gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+temperature%22">Ocean temperature</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Gulf+of+Mexico%22">Gulf of Mexico</searchLink><br /><searchLink fieldCode="DE" term="%22Yucatán+Channel%22">Yucatán Channel</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Recent studies on Loop Current's variability in the Gulf of Mexico suggest that the system may behave with some regularity forced by the biannually varying trade winds. The process is analyzed here using a reduced-gravity model and satellite data. The model shows that a biannual signal is produced by vorticity and transport fluctuations in the Yucatan Channel because of the piling up and retreat of warm water in the northwestern Caribbean Sea forced by the biannually varying trade wind. The Loop grows and expands with increased northward velocity and cyclonic vorticity of the Yucatan Current, and eddies are shed when these are near minima. Satellite sea surface height (SSH) data from 1993 to 2010 are analyzed. These show, consistent with the reduced-gravity experiments and previous studies, a (statistically) significant asymmetric biannual variation of the growth and wane of Loop Current: strong from summer to fall and weaker from winter to spring; the asymmetry being due to the asymmetry that also exists in the long-term observed wind. The biannual signal is contained in the two leading EOF modes, which together explain 47% of the total variance, and which additionally describe the eddy shedding and westward propagation from summer to fall. The EOFs also show connectivity between Loop Current and Caribbean Sea's variability by mass and vorticity fluxes through the Yucatan Channel. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Physical Oceanography is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=86690087
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1175/JPO-D-12-0139.1
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 21
        StartPage: 669
    Subjects:
      – SubjectFull: Loop Current
        Type: general
      – SubjectFull: Trade winds
        Type: general
      – SubjectFull: Gravity
        Type: general
      – SubjectFull: Ocean temperature
        Type: general
      – SubjectFull: Gulf of Mexico
        Type: general
      – SubjectFull: Yucatán Channel
        Type: general
    Titles:
      – TitleFull: Loop Current Growth and Eddy Shedding Using Models and Observations: Numerical Process Experiments and Satellite Altimetry Data.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Chang, Yu-Lin
      – PersonEntity:
          Name:
            NameFull: Oey, L.-Y.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2013
              Type: published
              Y: 2013
          Identifiers:
            – Type: issn-print
              Value: 00223670
          Numbering:
            – Type: volume
              Value: 43
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Journal of Physical Oceanography
              Type: main
ResultId 1