Thirty-Day Average Geopotential Height Anomaly at 250 hPa

This map shows the thirty-day average geopotential height climatology and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the latest available thirty-day period.

Thirty-day average geopotential height climatology values are shown as grey contours with a contour interval of 60 geopotential meters (gpm). Positive geopotential height anomalies are shown in yellow and orange, and negative anomalies are shown in shades of blue and are also expressed in units of gpm.

Dataset Documentation

Thirty-Day Average Geopotential Height Anomaly at 250 hPa

Data

NCEP-NCAR Reanalysis daily geopotential height at 250 hPa on a 2.5° lat/lon grid

Data Source

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

Analysis

Thirty-day average geopotential height climatology and anomalies using the 1991-2020 base period

Helpdesk

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