by Et in Arcadia ego » Fri Jan 06, 2006 1:08 pm
People call them 'Hole Punch Clouds'. HAARP often gets touted as the responsible agent, but if you look closely you can see that it's an interaction between a contrail and the cirrocumulus around it. The contrail leaves a stream of frozen exhaust behind it which can trigger a burst of freezing in the surrounding cloud. The frozen material is much heavier, and falls rapidly, making the odd looking feathery structure you see in these images. In just about every single image you'll come across of these, you'll find a contrail:<br><br><!--EZCODE IMAGE START--><img src="http://newtonnjd.net/extra/29Dec05/comp.jpg" style="border:0;"/><!--EZCODE IMAGE END--><br><br>A more intellegent way of saying the same thing:<br><br><!--EZCODE QUOTE START--><blockquote><strong><em>Quote:</em></strong><hr>Mixing of moist environmental air and vapor-depleted contrail air produced localized regions of supersaturation along the contrail periphery, where crystals grew to several hundred microns at about 0.1 μm s-1. These particles could then fall from the contrail into the vapor-rich, undepleted, supersaturated environment below. As heavier crystals left the contrail, others moved into the regions of ice supersaturation.<hr></blockquote><!--EZCODE QUOTE END--><br><br><!--EZCODE LINK START--><a href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998GeoRL..25.1335H&db_key=AST&data_type=HTML&format=">Link</a><!--EZCODE LINK END--><br><br>This is what it looks like from orbit:<br><br>http://rsd.gsfc.nasa.gov/goes/pub/goes/QTmovies/970510.florida.mov<br><br>Here's one in it's early stage I took a few months ago:<br><br><!--EZCODE IMAGE START--><img src="http://sickle666.com/Chem/mine/In%20the%20Pink/22.jpg"/><!--EZCODE IMAGE END--> <p></p><i></i>