>>23747220
>There is a difference between a contrail and a chemtrail.
Is there? Contrails frequently induce cirrus cloud cover. It's interesting you take no exception to the increased local air traffic. Do locals shake their fists at the clouds and say "Darn Chemtrails!" while regulated air carriers schedule more flights and make more aviation-induced cirrus cloud cover?
"A new study based on historical data examines Allied air raids, including one on May 11, 1944, in which 1,980 aircraft took flight into Germany. Behind the planes, witnesses described the sky turning white, and temperature records show that the air turned slightly, but significantly, cooler.
The study, published in the International Journal of Climatology, highlights these observations and other historical data, weather reports and flight logs of Allied air campaigns between 1943 and 1945.
Professor Rob MacKenzie at the University of Birmingham in England, who helped lead the study, said that evaluating the climate effects of contrails is challenging.
"As soon as the contrails stop being these pencil-thin lines in the sky, it becomes difficult to differentiate natural cirrus from aviation-induced clouds," said MacKenzie."
World War II Bomber Contrails Show How Aviation Affects Climate
https://www.scientificamerican.com/article/contrails-aviation-affects-climate/
World War II contrails: A case study of aviation-induced cloudiness
"Although one event cannot provide firm conclusions regarding the effect of contrails on climate, this study demonstrates that the wealth of observational data associated with WW2 bombing missions allows detailed investigation of meteorological perturbations because of aviation-induced cloudiness. "
https://www.researchgate.net/publication/235351579_World_War_II_contrails_A_case_study_of_aviation-induced_cloudiness