Monthly Sea Level Pressure Anomaly

This is a contour map of monthly average sea level pressure anomalies for the globe with respect to the 1991-2020 climatology.

The sea level pressure anomalies are calculated from the NCEP-NCAR Reanalysis data set and mapped in units of millibars (mb), or hectopascals (hPa), with a contour interval of 2 mb.

Dataset Documentation

Monthly Sea Level Pressure Anomaly

Data

NCEP-NCAR Reanalysis monthly sea level pressure on a 2.5° lat/lon grid

Data Source

NOAA National Centers for Environmental Prediction (NCEP) (NCEP/NCAR Reanalysis)

Analysis

Contour map of monthly sea level pressure anomalies with respect to the 1991-2020 base period

Helpdesk

Contact help@iri.columbia.edu with any technical questions or problems with this Map Room.