While there is an article "Effects of Global warming", oddly enough there isn't one for "Effects of contrails".
It's odd because contrails are a known and measurable factor in changing the atmosphere and heat balance of the planet. See Google scholar
Also, the article Effects of Global warming does not include the term contrails.
It does use CO2 13 times.
There is an article about the Environmental impact of the coal industry, but not one for Environmental impact of contrails.
(edit) Found it under Environmental effect of aviation
An obvious redirect is in order.