The building maintenance scheduled for Friday February 27th at 5:00pm MST has been postponed until 5:00pm March 6th. PSD's website will be down during the maintenance.
 

ENSO's effect on climate by month


September to December composite anomalies (beginning El Niño/La Niña)

El Niño La Niña
SLP SLP
Surface air temperature Surface air temperature
Precipitation rate Precipitation rate
200mb geopotential height 200mb geopotential height
200mb zonal wind 200mb zonal wind
850mb zonal wind 850mb zonal wind
850mb meridional wind 850mb meridional wind

January to June composite anomalies

El Niño La Niña
SLP SLP
Surface air temperature Surface air temperature
Precipitation rate Precipitation rate
200mb geopotential height 200mb geopotential height
200mb zonal wind 200mb zonal wind
850mb zonal wind 850mb zonal wind
850mb meridional wind 850mb meridional wind

You can use these plots in publications, though we ask that you acknowledge the Physical Sciences Division in the publication. For example, "Image provided by the NOAA/ESRL Physical Sciences Division, Boulder Colorado from their Web site at http://www.esrl.noaa.gov/psd/."