This map shows the thirty-day average geopotential height climatology and standardized anomalies at the 500 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 standardized geopotential height anomalies are shown in yellow and orange, and negative standardized anomalies are shown in shades of blue.
Thirty-Day Average Standardized Geopotential Height Anomaly at 500 hPa
Data NCEP-NCAR Reanalysis daily geopotential height at 500 hPa on a 2.5° lat/lon grid
Data Source NOAA National Centers for Environmental Prediction (NCEP)
Analysis Thirty-day average geopotential height climatology and standardized anomalies using the 1991-2020 base period.
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