Satellite retrievals of tropospheric temperature reveal strong mid-latitude warming
during 1979-2005 relative to the global mean temperature trend.  Over the same period,
the stratosphere shows strong mid-latitude cooling relative to its global mean trend.
These zonally symmetric bands of enhanced warming and cooling in the troposphere and
stratosphere respectively may indicate a broadening of the Hadley circulation and
a poleward shift of the jet stream.  The pattern is strongest in the summer months 
in both hemispheres and may have wide-spread implications for both drought persistence
and rainfall patterns.  
