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Niño 3.4 SST Anomaly and Equatorial Central/Eastern Pacific 925 hPa Zonal Wind Anomaly

These are time series of the three-month running average of standardized anomalies of the monthly zonal wind at 925 hPa averaged over the equatorial Pacific Ocean (5°S to 5°N latitude and 150°E to 90°W longitude) and the three-month running average of standardized anomalies of monthly sea surface temperature anomalies averaged over the NINO3.4 region in the equatorial Pacific (5°S to 5°N latitude and 170°W to 120°W longitude) over the past 25 years.

The blue plot traces the three-month running average of standardized anomalies of east-central Pacific zonal wind, and the red line plots the three-month running average of standardized anomalies of sea surface temperature in the NINO3.4 region. The climatological base period for the zonal wind and sea surface temperature anomalies is 1981-2010. The zonal wind anomalies are standardized with respect to the period January 1949 to present, and the sea surface temperature anomalies are standardized with respect to the period January 1950 to present.

Dataset Documentation

Monthly Zonal Wind Data

Data
NCEP-NCAR Reanalysis monthly zonal wind at 925 hPa on a 2.5° lat/lon grid
Data Source
NOAA National Centers for Environmental Prediction (NCEP) (NCEP/NCAR Reanalysis)
Analysis
Three-month running average of standardized (1950-present base period) monthly zonal wind anomalies (1981-2010 base period) averaged over the region 5°S to 5°N latitude and 150°E to 90°W longitude

Monthly SST Data

Data
Extended Reconstructed Sea Surface Temperature (ERSST) Version 3b monthly sea surface temperature (in °C) on a 2.0° lat/lon grid
Data Source
NOAA National Climatic Data Center (NCDC) (ERSST Version 3b)
Analysis
Three-month running average of standardized (1950-present base period) monthly sea surface temperature anomalies (1981-2010 base period) averaged over the NINO3.4 region

Dataset

Access the dataset used to create this map.

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