Why are vapour trails rarely seen in Australia?
Answers:
Australia is at a latitude such that it is under the downward current of the Hadley cells -- the great planetary circulation in which moist air rises from the tropics, the moisture gets squeezed out as rain, and the air then moves toward the poles and descends in the vicinity of 30 degrees north and south, getting drier and hotter as it goes down. So the air is mostly too dry for vapor trails to form, and causes most of Australia to be desert. The Sahara, Arabian, and the Mojave deserts also arise from this effect.
there is not a lot of cross country jet air traffic compared to US and europe. most jets either arriving or leaving over the ocean.
dry climate could be a factor too.
no one goes there much.
cant see australia from here
because no one goes there
Cause the air is too dry. No water vapour, no vapour trail.
Because according to my smart alec husband their is low air humidity in Aus, for us normal folks that just means there is not much water in the air. There was a really long explanation about the cause of vapor trails but to be perfectly honest i didn't understand a word of it. Just stick to the low humidity its all you need to know!
Low humidity. Also higher temperatures mean the air can hold more humidity before becoming saturated (what happens when clouds and contrails form).
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