ECMWF >
ERA-40 Atlas >
Isentropic level climatologies (polar stereographic projections) >

Potential vorticity and vector wind at 315K

Click here to see this chart in a new browser window
 EPS (1949kb)
 GIF (118kb)
 Annual mean  
Click here to see this chart in a new browser window
 EPS (825kb)
 GIF (85kb)
 Interannual variability  
Click here to see this chart in a new browser window
 EPS (1864kb)
 GIF (113kb)
 December-February  
Click here to see this chart in a new browser window
 EPS (1936kb)
 GIF (118kb)
 March-May  
Click here to see this chart in a new browser window
 EPS (2106kb)
 GIF (130kb)
 June-August  
Click here to see this chart in a new browser window
 EPS (1986kb)
 GIF (120kb)
 September-November  
ERA    The University of Reading    ECMWF    WCRP