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... > Science Keywords > EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > MULTIVARIATE ENSO INDEX (MEI)

TERME PRÉFÉRENTIEL

MULTIVARIATE ENSO INDEX (MEI)  

DÉFINITION

  • The MEI is a leading indicator for the El Niño/Southern Oscillation (ENSO) phenomenon and is calculated as the first unrotated Principal Component of six observed variables over the tropical Pacific Ocean. These six variables are: sea level pressure, zonal and meridional components of the surface wind, sea surface temperature, surface air temperature, and total cloudiness fraction of the sky. The MEI is computed for each of twelve sliding bimonthly seasons (Dec/Jan, Jan/Feb,..., Nov/Dec). Negative values of the MEI represent the cold ENSO phase (La Niña), while positive MEI values represent the warm ENSO phase (El Niño).

CONCEPT GÉNÉRIQUE

NOTE DE CHANGEMENT

  • 2012-06-25 10:27:09.0 [mpmorahan] Insert Concept add broader relation (MULTIVARIATE ENSO INDEX [caddaef6-1a60-490a-938e-9107885f286f,39693] - TELECONNECTIONS [b887d3e5-4280-43d2-a34e-0f63ac086b6a,20219]);
  • 2012-06-25 10:28:05.0 [mpmorahan] Insert Concept add narrower relation (MULTIVARIATE ENSO INDEX [caddaef6-1a60-490a-938e-9107885f286f,39693] - MEI [087bffd1-f4f5-49ef-98d8-8e7d1169bfe8,39695]);
  • 2012-07-09 11:41:36.0 [mpmorahan] insert Definition (id: null text: The MEI is a leading indicator for the El Niño/Southern Oscillation (ENSO) phenomenon and is calculated as the first unrotated Principal Component of six observed variables over the tropical Pacific Ocean. These six variables are: sea level pressure, zonal and meridional components of the surface wind, sea surface temperature, surface air temperature, and total cloudiness fraction of the sky. The MEI is computed for each of twelve sliding bimonthly seasons (Dec/Jan, Jan/Feb,..., Nov/Dec). Negative values of the MEI represent the cold ENSO phase (La Niña), while positive MEI values represent the warm ENSO phase (El Niño). language code: en);
  • 2020-02-14 15:07:31.0 [tstevens] Remove Concepts delete narrower relation (null);
  • 2020-02-18 10:19:55.0 [tstevens] update PrefLabel (MULTIVARIATE ENSO INDEX (MEI));

URI

https://gcmd.earthdata.nasa.gov/kms/concept/caddaef6-1a60-490a-938e-9107885f286f

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