Originally posted by luxordelphi
"Why are metallic looking rainbows appearing in the sky?"
Natural Cloud Iridescence:
atoptics.com: Cloud Iridescence
"Why are people in the middle of nowhere telling me they can't see stars at night?"
My daytime skies often have persistent spreading contrails, but I still often have clear nights. I also have cloudy nights. I also have partly
cloudy nights. I also have hazy nights.
"Why am I having trouble seeing stars at night in the middle of nowhere?"
same answer as above.
"Why do the stars look like they are covered with some sort of mist?"
A thin layer of cloud cover maybe? Perhaps you often have humid nights?
Where I live in the Northeast US, we have our share of thin cloud cover, humidity, and cloudy nights, but we also have our share of wonderfully dark
and starry nights. Those starry nights are usually when the air has less humidity, such as in the fall, winter, and spring, although we have had some
clear nights this summer.
Those ultra-starry nights in the summer usually occur when the daytime weather was "crisp and clean" (i.e., low humidity).
"Why does the ocean, reflecting the sky, look oily?"
I haven't noticed the ocean being oily, but I'm guessing that if there are oily patches, it could just be pollution from shipping. I'm not sure how
you can directly correlate chemtrails with oil slicks on the water. It seems more likely that oil slicks come from ships....
...I mean, if you saw pollution on the side of the highway (paper, beer cans, etc), wouldn't you guess that pollution cam from people in cars? In the
same manner, I think an oil slick on the ocean most likely comes from ocean-going traffic, or perhaps industrial waste pipes dumping into the ocean
"Why are planes spraying and then doubling back to keep spraying?"
Holding patterns for commercial airliners. Often they need to hold in circular paths and at high altitudes. Also, some of those circular path may be
military aircraft on practice maneuvers.
"Why are planes stopping and starting spraying across the sky as they fly like some mad morse coders?"
Intermittent contrails. This is when a plane flies from an area of the sky in which the atmospheric conditions ARE conducive to trail formation and
into and area of the sky where the conditions are NOT conducive to contrail formation.
These areas can be highly localized, and the boundary between these areas could have wildly varying conditions in close proximity to each other, hence
the intermittent trail.
"Why are there grid patterns in the sky?"
A single air route often has "lanes" that are separated horizontally by several thousand feet. There could be several ailiners that fly in these air
lanes over a certain area. Some of these air routes (and their several lanes) go generally east-west, and others can go generally north-south. At
times in which large areas of the atmosphere are conducive to contrail formation, all of the planes (the several lanes of planes going east-west and
the several lanes of planes going north-south) cross in a grid pattern.
I have one of the major east-west routes over my head, and when conditions are conducive to trail formation, I can see several lines of trails. I
don't have a north-south air route above me, so I don't see the grid, but my mother lives in a area where these air routes cross, and I have seen this
"Why is the sky this wierd gray color?"
I'm not sure where you are, but here in the Northeast US, we don't only have gray skies (although we occasionally do).
My sky here in the Northeast US is often blue, but it is also often blue with puffy cumulus clouds, or often partly blue with wispy cirrus clouds, or
overcast gray with no blue at all, or dark and stormy, or light blue-gray and hazy.
Perhaps global warming is contributing to an increase in humidity, which may lead to a decrease of dark blue-sky days. Who knows?
"What happened to the Prussian blue color of sky that I used to look forward to seeing just as the very last twilight faded and night was
enveloping the land?"
Again, I don't know where you live, but because it is summer right now, we more often than not have days with high humidity. Therefore we have a
summer haze cause by moisture in the air. However, once in a while (such as yesterday and a couple of days last week), the humidity breaks and we
have clear and dark blue skies.
That break in humidity doesn't happen often in the summer -- we usually have more days like that in the mid-to-late fall, winter, and early spring.
That's why I like the mid to late fall the best -- crisp and clean air with very low humidity and (therefore) dark blue skies. Winter skies are also
often dark blue like that due to low humidity, but it's also cold, so I don't like it as much
I do admit that the number of contrails could very well be increasing over time, but this could be due to the very obvious increase in air traffic
over the past several years (and past several decades), plus the fact that the newer high-bypass jet engines that have began to be in use in the past
10 or 15 years also tends to create more/thicker contrails, due to the cooler and wetter exhaust (cooler+wetter = more trails).
However, I don't think it's these new engines as much as it is simply more planes in the sky.
I've already posted my memories from the 1970s of persistent spreading contrails, and provided a scientific paper from 1972 discussing persistent
contrails as back-up information, plus we have all seen photos from as far back as the 1940s of persistent contrails...
...so it seems that they always have existed since the beginning of high-altitude flight.
edit on 8/23/2011 by Soylent Green Is People because: (no reason given)