@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/d14d762c-4117-438a-9093-a098a0d0e4e6>
  skos:changeNote """2012-06-27 10:18:41.0 [mpmorahan] Move Concepts 
add broader relation (ENSO PRECIPITATION INDEX [d14d762c-4117-438a-9093-a098a0d0e4e6,22497] - PRECIPITATION INDICES [52347642-9786-4b59-be77-02e9f307118d,39663]); 
delete broader relation (null); 
""" ;
  skos:definition """The goal in constructing a precipitation-based measure of ENSO was to estimate the gradient of rainfall anomalies across the Pacific basin and ensure a good relationship with SST- and pressure-based indices. Areas were selected that represent the Maritime Continent (MC) (10° N – 10°S; 90° E – 150° E) and central to eastern Pacific (P) (10° N – 10° S; 160° E – 100° W). These regions capture the largest precipitation anomalies associated with the interannual variations of the Walker circulation and contain the largest correlations between GPCP and Nino 3.4 and SOI. Within P and MC the absolute magnitude of the largest correlation is over +0.6. 

Because of the spatially varying nature of rainfall, it was decided to use a moving block average which would capture the strongest zonal gradients within the equatorial Pacific. This procedure is unlike many fixed area average indices, and allows for a realistic meridional component of the precipitation gradient and migration of the ascending and descending branches of the Walker circulation."""@en ;
  skos:prefLabel "ENSO PRECIPITATION INDEX"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/52347642-9786-4b59-be77-02e9f307118d> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/52347642-9786-4b59-be77-02e9f307118d>
  skos:prefLabel "PRECIPITATION INDICES"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/d14d762c-4117-438a-9093-a098a0d0e4e6> .