The Aleutian Low:
Trends and Cycles

Tim Lopes


The original was created in Microsoft Powerpoint.  If you would like to download it, CLICK HERE.  The following are only the images used in the presentation.

Sea Level Pressure --Average (1958-1975)

 
 

Sea Level Pressure--El Nino Years (1958-1975)

 
 

Sea Level Pressure--La Nina (1958-1975)

 
 

Sea Surface Temperature--Average (1958-1975)

Sea Surface Temperature--El Nino (1958-1975)

 
 

Sea Surface Temperature--La Nina (1958-1975)

 
 
 
 
 
 
 

Sea Level Pressure--Average (1978-2000)

 
 

Sea Level Pressure--El Nino (1978-2000)

 
 

Sea Level Pressure--La Nina (1978-2000)

 
 

Sea Surface Temperature--Average (1978-2000)

 
 

Sea Surface Temperature--El Nino (1978-2000)

 
 

Sea Surface Temperature--La Nino (1978-2000)

 
 

Average SLP minus El Nino SLP (1958-1975)

 
 

Average SLP minus La Nina SLP (1958-1975)

 
 

Average SST minus El Nino SST (1958-1975)

 
 

Average SST minus La Nina SST (1958-1975)

 
 
 
 

Average SLP minus El Nino SLP (1978-2000)

 
 

Average SLP minus La Nina SLP (1978-2000)

 
 

Average SST minus El Nino SST (1978-2000)

 
 

Average SST minus La Nina SST (1978-2000)

 
 
 
 

Pre-1977 El Nino SST

 
 

Post-1977 El Nino SST

 
 

Pre-1977 La Nina SST

 
 

Post-1977 La Nina SST

 
 
 
 

A Typical Strong Aleutian Low

 
 

SST Pattern During a Strong A.L. Period

 
 
 

A Typical Weak Aleutian Low

 
 

SST Pattern During a Weak A.L. Period

 
 
 
 

Vector Winds Showing the Alaskan Gyre

 
 

The Actual Alaskan Gyre

 
 

The 1977 Regime Shift

 
 

Plankton Concentration