Record North Atlantic Low Pressure Pattern Drops AMO

[bluewave]

The record breaking low pressure pattern near the UK this winter was able to cool the

North Atlantic enough for the AMO to dip negative.

 

http://www.esrl.noaa.gov/psd/data/correlation/amon.us.long.data

 

You can see how the winds associated wit the pressure pattern were able to cool off

areas of the North Atlantic along with the Tropical Atlantic east of the Caribbean. Some

of the seasonal forecasts for spring have a similar pattern continuing. So it will be

interesting to see how things look once we get into the hurricane season this summer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[bluewave]

Back in the winter of 2009-2010 we had an inverse pattern with very strong high pressure

over the North Atlantic. That pattern drove the cooler SST's over the subtropical Atlantic

along with warmer than normal SST's far North Atlantic and east of the Caribbean. The

pattern preceded the record warm SST's over the MDR during the summer of 2010.

 

 

 

 

 

[thewxmann]

Well, since the neutral/Nina and +AMO conditions didn't work for the Atlantic these past couple of years, Nino and -AMO must right?

[bluewave]

The circulation pattern this winter was a more amplified version of 93-94. Notice how the 

resulting SST pattern in the Atlantic is similar to what we are seeing this week. Since

the 93-94 pattern occurred against a colder Atlantic SST profile, the overall SST's 

were lower.