Weather and Climate; some good news, maybe

A team of scientists, analyzing trends in Atlantic temperatures, has published their results in Nature.
A phenomenon called the Atlantic Multidecadal Oscillation, called the AMO for obvious reasons, seems to be entering a cool phase. This cycle lasts tens of years, so there’s not a lot of data to go on. Still, when the atlantic enters this cooler phase, it generates weather changes. Britain has less summer rain. The Sahel region of North Africa has droughts. The US Midwest has fewer droughts and they tend to be shorter. There are fewer hurricanes; reasonable, since hurricanes begin off the coast of Africa, gain strength from the warmer waters of the mid-Atlantic, then come ashore somewhere in the Americas. Hurricanes are essentially heat-transfer mechanisms that take surface heat and move it to the upper atmosphere, where some of it is radiated away into space. The Pacific Coast states, particularly Washington and Oregon, get more rainfall.
I found a summary of this report in The Conversation, a publication I recommend to everyone. It’s free, is emailed daily, and it usually concentrates on international matters of interest, as opposed to the US news industry which concentrates far too much on the US. We are engaged with the nations of the world, after all; it behooves us to know something about what’s going on elsewhere.
The good news is that this analysis offers a prediction we can check later, and it’s one more tool scientists can use to better understand weather and climate.

Advertisements

Tags: , ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: