---
cited_by: []
definition: 'The Niño4 SST anomaly index is an indicator of western tropical Pacific El Niño conditions. It is calculated with SSTs in the box 160°E - 150°W, 5°S - 5°N.'
href: https://data.globalchange.gov/gcmd_keyword/ad5bde75-1f54-4f7e-a958-3adaf9f40639.yaml
identifier: ad5bde75-1f54-4f7e-a958-3adaf9f40639
label: CENTRAL TROPICAL PACIFIC SST
parent_identifier: b83895e9-bac8-49fe-bcf5-8fe4d8fcaa16
uri: /gcmd_keyword/ad5bde75-1f54-4f7e-a958-3adaf9f40639