Showing posts with label James Kossin. Show all posts
Showing posts with label James Kossin. Show all posts

Tuesday, June 12, 2018

Cascading consequences: Atmosphere - Jetstream - Cyclones - Hydrological cycle

There’s a new study that comes as no surprise, still since it's such an excellent example of Cascading Consequences, to say nothing of fascinating for the added dimension in understanding it offers, I want to share it over here.
  
The evidence is in and since about the 1950s the speed at which hurricanes travel across oceans and land has been slowing down appreciably.  It’s no surprise because as the Arctic warms the air column above it increases in height relative to the slower warming tropical atmospheric column.  This decreasing gradient of course impacts all natural vectors and oscillations that flow through it. 

Rossby waves and cascading consequences.   It’s the same phenomena that’s causing our jet stream to become more sluggish and erratic these past decades.  Jennifer Francis is an expert and I want to share what she has to explain since it offers an introduction to the concepts at work here.  

Jennifer Francis - Understanding the Jetstream