Jennifer Francis (Rutgers) - "Sticky" Winter Weather: Does It Take Two to Tango?
5
“Sticky” Winter Weather: Does It Take Two to Tango? Jennifer Francis Department of Marine and Coastal Sciences Rutgers University California drought 2014-2015 U.S. Eastern freeze 2014-2015
-
Upload
jessica-rohde -
Category
Science
-
view
383 -
download
1
Transcript of Jennifer Francis (Rutgers) - "Sticky" Winter Weather: Does It Take Two to Tango?
“Sticky” Winter Weather: Does It Take Two to Tango?
Jennifer'Francis'Department)of)Marine)and)Coastal)Sciences)
Rutgers)University)
California drought 2014-2015 U.S. Eastern freeze 2014-2015
Nov)2014)
A Tale of Two Winters
Nov)2007)
Sea ice cover: differences from normal Air temperature differences
from%NSIDC% from%ESRL.NOAA%
-PDO
+PDO
The
“It Takes Two to Tango”
hypothesis
Extra heating intensifies ridge, making it more persistent.
Two necessary factors, neither sufficient alone!!
Ice loss has no effect
The good old days…
O U
D
-PDO +PDO
Evidence from the Real World
Lee)et)al,))GRL))2015)
Height)in)meters)
Layer Heights:
OBS
Model with Pac SSTs AND
Sea Ice
Model with Pac SSTs
Model with
Sea Ice
Winter)2013/14)