Space Weather News for Aug. 31, 2014
http://spaceweather.com
 
Aurora season is now fully underway around the Arctic circle.  With the end
of northern summer approaching, dancing green lights are beaming through
the deepening polar twilight on a regular basis. Unlike lower latitudes,
the Arctic does not require a full-fledged geomagnetic storm for aurora
sightings.  Check the latest images on the front page of
http://spaceweather.com
 
Meanwhile, another polar phenomenon is on the wane: noctilucent clouds
(NLCs).  Data from NASA's AIM spacecraft suggest that the northern summer
season for NLCs ended on or about August 26th.  The "noctilucent
daisy" shown on http://spaceweather.com will probably remain blank
until November, when NLC activity shifts to the southern hemisphere.  NLCs
are a summertime phenomenon and they switch back and forth between the
hemispheres accordingly.  Stay tuned for more electric blue ... in a few
months.
 
 
Regards,
 
Roger

--- D'Bridge 3.99