posted on May, 12 2009 @ 01:25 PM
Now what I would first do is check the upper air readings from a NWS site and see what what the conditions are over head.
Now to the meat of the matter.
First, a curved contrail is not inditicative of a "chemtrail". It signifies the aircraft has made a course change and is turning towards its
destination, wherever that maybe. Obviously the contrail will follow the plane's course adjustment. Second, gaps in the contrail means that there
were pockets of dryer air, when the moisture evaporated quickly therefore not allowing the contrail to linger. The atmosphere is not a single
condition, but is very variable and one lyaer of air may have different set of condtions than the one a few hundred meters away. Its turbulent and the
conditions are not uniform. One pocket of air maybe dry, while just ahead of it, another is more moist and warmer, or cooler. Third: It also depends
on the aircraft and its engines. Is it a newer engine that is more efficient or is it an older one? Whats the temperature of the engine while its
operating? Is it on a higher setting or lower? Fourth: what is the altitude of the jets? The air can be quite different 1000ft above or below. Even
You see, contrail science is very complicated, and an understanding of meteorology plus some aviation is required to understand what is being seen.
Also, its all very interconnected. Different temps, moisture levels, altitudes, pressures, can make or break a contrail. Some will expand, others not.
Some dissappear, others linger for hours and turn into cirrus.