{"id":10360,"date":"2015-11-15T21:35:33","date_gmt":"2015-11-16T02:35:33","guid":{"rendered":"http:\/\/scienceblogs.com\/principles\/?p=10360"},"modified":"2015-11-15T21:35:33","modified_gmt":"2015-11-16T02:35:33","slug":"076366-air-traffic","status":"publish","type":"post","link":"http:\/\/chadorzel.com\/principles\/2015\/11\/15\/076366-air-traffic\/","title":{"rendered":"076\/366: Air Traffic"},"content":{"rendered":"

It was a cool clear morning when I took Emmy out for our morning walk, with a band of high clouds running eat-west across the sky to our north. After watching a bit, I realized that these were probably entirely seeded by jet contrails, as I saw at least four planes flying along that band during the walk. <\/p>\n

This shot catches one of them (the big band crosses the frame diagonally at lower right), plus a second running parallel to it but a bit farther south, and a third crossing them:<\/p>\n

\"Contrails<\/a>
Contrails crossing in the northern sky.<\/figcaption><\/figure>\n

I’m guessing this must be a route from Boston to points west, possibly even a corridor for European flights to Chicago and Detroit. Whatever it is, there’s a ton of air traffic up there.<\/p>\n

Back in 2002, after the September 11 attacks shut down all air travel for the better part of a week, I remember reading stories about how there was a substantial increase in the amount of sunlight reaching the ground thanks to the loss of airplane-created clouds. That always seemed kind of surprising, but watching all those planes this morning makes it a lot more clearly plausible.<\/p>\n","protected":false},"excerpt":{"rendered":"

It was a cool clear morning when I took Emmy out for our morning walk, with a band of high clouds running eat-west across the sky to our north. After watching a bit, I realized that these were probably entirely seeded by jet contrails, as I saw at least four planes flying along that band… Continue reading 076\/366: Air Traffic<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":10361,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[684,50],"tags":[],"class_list":["post-10360","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-684","category-pictures","entry"],"_links":{"self":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/10360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/comments?post=10360"}],"version-history":[{"count":0,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/10360\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/media\/10361"}],"wp:attachment":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/media?parent=10360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/categories?post=10360"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/tags?post=10360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}