On Sun, Sep 25, 2011 at 1:04 AM, Ryan Satterfield <rsatterf@gmail.com>wrote: > I can almost guarantee that is a doppler radar anomaly. > Both images posted have been processed with an automated ground clutter > filter to reduce noise near the center of the image. > > The image below is an example of the same anomaly on a US station (without > a ground clutter filter). > > http://tinypic.com/r/2dvjsdx/7 > > > On Sun, Sep 25, 2011 at 12:07 AM, Ted Molczan <ssl3molcz@rogers.com>wrote: > >> Chip Sufitchi wrote: >> >> > Someone sent me this image: http://www.n2yo.com/tmp/e.jpg >> > >> > Any thoughts are welcome. >> >> It is a frame from the display of an Environment Canada weather radar, >> located in Southern Alberta, near Calgary. Here >> is a better reproduction: >> >> http://www.flickr.com/photos/cyyj/6177276974/ >> >> Some folks have speculated that the streak on that frame is related to the >> final descent of UARS. I disagree for two >> reasons. >> >> The first problem is the time, 05:30 UTC. Had UARS survived past >> USSTRATCOM's predicted decay time of 04:16 UTC, then it >> would have passed through the area near 04:18 UTC. Had it survived for >> another revolution, its next pass over N. America >> would have begun near 05:47 UTC, on a track far to the north of the area >> covered by the radar in question. There is no >> way to place UARS in that location at 05:30 UTC. Anyone wishing to claim >> that the streak on the radar was from a >> break-up on a pass at 04:18 UTC, would need to explain why it was detected >> only on a single frame, as well as the lack >> of witnesses, which is my second point of disagreement. >> >> Decays are visually spectacular, and there are millions of potential >> witnesses in the area, many of whom would have been >> out and about, late on a Friday evening, before midnight. For example, had >> the pass occurred at the typical break-up >> altitude - about 80 km, Calgary - population 1 million - would have had >> about a 60 deg elevation pass, and Seattle - >> pop. 3.7 million - would have had a 40 deg pass. To my knowledge, there >> has not been a single confirmed sighting. >> SeeSat-L received at least three reports from observers in the area, who >> knew where to look (I know, because I >> communicated with two of them directly), and they saw nothing. >> >> Ted Molczan >> >> >> _______________________________________________ >> Seesat-l mailing list >> http://mailman.satobs.org/mailman/listinfo/seesat-l >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.satobs.org/mailman/private/seesat-l/attachments/20110925/457c9aa1/attachment.html _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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