contrails

Source: https://www.youtube.com/watch?v=bSykLp9yNJM Very short contrail?

I took the above photo today. It shows some Cumulus mediocris clouds. Medium sized cumulus. There are some people who think that these small fluffy clouds are the only type of "real" clouds that exists, and that high clouds such as cirrus or odd looking clouds like mammatus are evidence of some...

Source: https://twitter.com/astro_kimbrough/status/840584517798789120 So where and what are these contrails? Circular contrails are generally not "airliners", but more likely are military planes, like AWACs.

A recent "UFO" case turned out to be a plane leaving a contrail. This was initially a little confusing as the footage was shot with a thermal camera which showed the engines of the plane as incredibly dark spots of heat, but also showed the contrail in a similar dark color, which seemed to...

Last year I acquired possession of a large trove of thousands of negatives of old family photos. My grandfather, Irving West, and his sons Frank and Donald we avid photographers. I spent some time digitizing them, but only recently have I gone through them looking for contrails. There are a few...

Taken at 16:53 PST (00:53 Nov 19 UTC) from Shingle Springs The plane is Cathy Pacific Cargo 2081, about 110 miles from my viewpoint. It's interesting because the plane is at 36,000 feet, which makes the view angle under 4 degrees, so I'm practically viewing the contrail from edge on. I...

I was snapping some pics of hole-punch clouds in this cloud layer when I suddenly noticed this quite dramatic black contrail. Now the fact that it is black isn't incredibly surprising when you notice that there are black clouds in the sky. And the areas where the contrail is darkest are also the...

Some "ground truth" here, the most current RAP 0h forecast, with my location: Panorama view outside my window: A mixture of contrails and natural high cirrus.

I just snapped this image of a jet at 45,000 and it made me wonder what the highest plane is I've ever taken a photo of. 45,000 is quite high, but not unprecedented. There are 45 jets currently in the air at 45,000 or above But only 6 at 47,000, and none (currently) above 47,000

Today (Thursday Oct 6th, 2016) marked the first significant contrail morning for several months here in El Dorado County, Northern California. The above photo on the right of criss-crossing contrails was taken at 7:30AM, and planes continued to leave trails for the next few hours. I took photos...

How to YOU get your best images of high altitude planes and contrails? With my 7D+500mm I would generally just use Shutter Speed Priority of 1/1000th, and leave the rest on auto. I'm not sure this is the best approach, but it's been okay for my needs. I've just got a new camera, a Nikon...

On July 16th, 2016, Sting and Peter Gabriel played at the Harvey's Lake Tahoe outdoor arena. I was there, and as well as enjoying the concert I also saw some interesting and spectacular contrails, and took quite a few photos (with my iPhone). I also sat directly behind a chemtrail believer who...

First time posting on this website, [off topic antagonistic commentary removed]. Recently I was browsing through an old thread regarding colored contrails in a video posted by conspiracy theorist "Sibec". Within the thread someone else posted another video by Sibec showing a CargoLux 747-400...

Climate scientist Paul Beckwith has posted a Youtube video where he debunks chemtrails by proposing that cleaner jet fuel and the physical and chemical changes in the atmosphere due to global warming make persistent contrails last longer because they consist of much smaller water droplets / ice...

the conditions this morning didn't allow for persistent contrails at normal high altitude so this one looked a bit out of place. By the time I spotted the plane responsible it was no longer leaving a contrail, but it was still below 28,000 feet and climbing: it had only recently taken off...

The following video was uploaded by Michael Rutledge of Kernersville, North Carolina. The video has the following description. Published on 18 Mar 2016 Notice the difference between colors from each side. I also have several stills and video of planes spraying while flying the opposite...

The above diagram shows a grid of lines at 35,000 feet above the ground, viewed from ground level. Each line spacing is five miles apart. I've previously shown how to use the elevation of the horizontal lines to get a ballpark estimate of distance. But what about the sloped lines, what can they...

Soda Springs, Sierra Nevada Mountains. Norton Bush 1868 In a visit to the wonderful Crocker Museum in Sacramento I saw a couple of paintings,both over 100 years old that had linear clouds in them. The type of clouds that might be mistaken for contrails or "chemtrails". Crests of the Sierra...

. I've started on a calculator to convert RHw (relative humidity with respect to water) to RHi (relative humidity with respect to ice). https://www.metabunk.org/rh Currently it just takes RHw, temperature and pressure, and then gives you the RHi, and the value of RHw at which RHi is 100% (i.e...

If anyone wants a challenge... not much to go on! https://www.facebook.com/photo.php?fbid=10204982107262732&set=gm.10156405348735302&type=3&theater