Region

Atmospheric Circulation

Daily, pentad, monthly and seasonal measures and analyses of atmospheric circulation.

Monthly
Monthly Geopotential Height Anomaly at 250 hPa
This map shows the monthly geopotential height climatology and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Geopotential Height Anomaly at 500 hPa
This map shows the monthly geopotential height climatology and anomalies at the 500 hPa pressure level in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Geopotential Height Anomaly at 925 hPa
This map shows the monthly geopotential height climatology and anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Standardized Geopotential Height Anomaly
This map shows the monthly geopotential height climatology and standardized anomalies at the 925, 500, and 250 hPa pressure levels in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Standardized Streamfunction Anomaly
This map shows the monthly streamfunction climatology and standardized anomalies at the 925, 500, and 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Standardized Velocity Potential Anomaly
This map shows the monthly velocity potental climatology and standardized anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Streamfunction Anomaly at 250 hPa
This map shows the monthly streamfunction climatology and anomalies at the 250 hPa pressure level in the atmosphere for the given month over the 1991-2020 base period.
Monthly Streamfunction Anomaly at 500 hPa
This map shows the monthly streamfunction climatology and anomalies at the 500 hPa pressure level in the atmosphere for the given month over the 1991-2020 base period.
Monthly Streamfunction Anomaly at 925 hPa
This map shows the monthly streamfunction climatology and anomalies at the 925 hPa pressure level in the atmosphere for the given month over the 1991-2020 base period.
Monthly Velocity Potential Anomaly
This map shows the monthly velocity potential climatology and anomalies at the 925 and 250 hPa pressure levels in the atmosphere for the given month over the 1991-2020 base period.
Quasi-biennial Oscillation
This plot presents a representation of the Quasi-biennial Oscillation (QBO) in terms of a time-pressure cross-section of the spatial average of equatorial zonal winds.
Monthly Sea Level Pressure
This is a contour map of monthly average sea level pressure for the globe.
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.
Monthly Sea Level Pressure Standardized Anomaly
This is a contour map of monthly average sea level pressure standardized anomalies for the globe with respect to the 1991-2020 climatology.
Monthly Tropical Wind Anomalies: African Sector
These maps show monthly vector wind anomalies at various pressure levels in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Tropical Wind Anomalies: Indian Ocean Sector
These maps show monthly vector wind anomalies at various pressure levels in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Tropical Wind Anomalies: Pacific Ocean Sector
These maps show monthly vector wind anomalies at various pressure levels in the atmosphere using the 1991-2020 base period for the month shown.
Monthly Vector Wind Anomaly
These maps show monthly vector wind anomalies at various pressure levels in the atmosphere using the 1991-2020 base period for the month shown.
Monthly SST Anomaly Change and Previous Month's Wind Anomaly
These maps show monthly vector wind anomalies and wind speed anomalies from the month previous (Lag = -1) to the labeled month, and the change in sea surface temperature anomalies from the previous month to the labeled month, for the globe, using the 1991-2020 base period.
Monthly SST, Vector Wind, and Wind Speed
These maps show monthly vector winds, wind magnitudes, and sea surface temperatures for the globe for the month shown.
Monthly SST, Vector Wind, and Wind Speed Anomalies
These maps show monthly vector wind anomalies, wind speed anomalies, and sea surface temperature anomalies for the globe using the 1991-2020 base period for the month shown.
Daily
Animation of Thirty-Day Average Geopotential Height Anomaly at 250 hPa
This map shows a 90-day animation of thirty-day average geopotential height and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period.
Animation of Thirty-Day Average Geopotential Height Anomaly at 500 hPa
This map shows a 90-day animation of thirty-day average geopotential height and anomalies at the 500 hPa pressure level in the atmosphere using the 1991-2020 base period.
Animation of Thirty-Day Average Geopotential Height Anomaly at 925 hPa
This map shows a 90-day animation of thirty-day average geopotential height and anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period.
Animation of Thirty-Day Average Standardized Geopotential Height Anomaly at 250 hPa
This map shows a 90-day animation of thirty-day average geopotential height and standardized anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period.
Animation of Thirty-Day Average Standardized Geopotential Height Anomaly at 500 hPa
This map shows a 90-day animation of thirty-day average geopotential height and standardized anomalies at the 500 hPa pressure level in the atmosphere using the 1991-2020 base period.
Animation of Thirty-Day Average Standardized Geopotential Height Anomaly at 925 hPa
This map shows a 90-day animation of thirty-day average geopotential height and standardized anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period.
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 Anomaly at 500 hPa
This map shows the thirty-day average geopotential height climatology and 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 Anomaly at 925 hPa
This map shows the thirty-day average geopotential height climatology and anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period for the latest available thirty-day period.
Thirty-Day Average Standardized Geopotential Height Anomaly at 250 hPa
This map shows the thirty-day average geopotential height climatology and standardized 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 Standardized Geopotential Height Anomaly at 500 hPa
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 Standardized Geopotential Height Anomaly at 925 hPa
This map shows the thirty-day average geopotential height climatology and standardized anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period for the latest available thirty-day period.
Pentad
Pentad 250 hPa Height and Anomaly Loop
This map displays an animation of pentad-average geopotential heights and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the past 30 days.
Seasonal
Seasonal Geopotential Height Anomaly at 250 hPa
This map shows the seasonal (3-month average) geopotential height climatology and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Geopotential Height Anomaly at 500 hPa
This map shows the seasonal (3-month average) geopotential height climatology and anomalies at the 500 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Geopotential Height Anomaly at 925 hPa
This map shows the seasonal (3-month average) geopotential height climatology and anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Standardized Geopotential Height Anomaly
These maps show the seasonal geopotential height climatology and standardized anomalies at the 250, 500, and 925 hPa pressure levels in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Standardized Streamfunction Anomaly
This map shows the seasonal (3-month average) streamfunction climatology and standardized anomalies at the 250, 500, and 925 hPa pressure levels in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Standardized Velocity Potential Anomaly
These maps show the seasonal (3-month average) velocity potental climatology and standardized anomalies at the 925 and 250 hPa pressure levels in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Streamfunction Anomaly at 250 hPa
This map shows the seasonal (3-month average) streamfunction climatology and anomalies at the 250 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Streamfunction Anomaly at 500 hPa
This map shows the seasonal (3-month average) streamfunction climatology and anomalies at the 500 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Streamfunction Anomaly at 925 hPa
This map shows the seasonal (3-month average) streamfunction climatology and anomalies at the 925 hPa pressure level in the atmosphere using the 1991-2020 base period for the season shown.
Seasonal Velocity Potential Anomaly
These maps show the seasonal (3-month average) velocity potental climatology and anomalies at the 925 and 250 hPa pressure levels in the atmosphere using the 1991-2020 base period for the season shown.