{"id":19160,"date":"2016-12-18T10:28:27","date_gmt":"2016-12-18T18:28:27","guid":{"rendered":"http:\/\/blog.kootenay-lake.ca\/?p=19160"},"modified":"2016-12-18T10:28:27","modified_gmt":"2016-12-18T18:28:27","slug":"circumzenithal-arc-3","status":"publish","type":"post","link":"https:\/\/blog.kootenay-lake.ca\/?p=19160","title":{"rendered":"Circumzenithal Arc"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>It wasn&#8217;t the best I had seen, but this display of haloes in the direction of Nelson was better than any I had seen for a few years. I was alerted to it by the sight of a circumzenithal arc high over a rooftop, but then grabbed my camera and found a better view of the western sky.<\/p>\n<p>The circumzenithal arc appears high in the sky when the Sun is low. It is concave up as befits its name: it being a (portion of a) circle centred on the zenith. Below the circumzenithal is the supralateral tangential arc to the 46\u00b0 halo. It is fainter and is concave down. When the Sun is about 23\u00b0 above the horizon, the two arcs touch, at which time the colours of the circumzenithal are superb (better than those of a rainbow). When this picture was taken, the Sun was only about 14\u00b0 above the horizon, the arcs have moved apart and the colours lack the earlier purity.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-19164\" src=\"https:\/\/blog.kootenay-lake.ca\/wp-content\/uploads\/2016\/12\/circumzenithalarc1161217bs.jpg\" alt=\"\" onclick=\"return false\" onmousedown=\"return false\" width=\"720\" height=\"480\" \/><\/p>\n<p>With a better view, more details emerged. In addition to the mentioned arcs there are other faint features: a 22\u00b0 halo, a sun pillar, a Lowitz arc and crepuscular rays. Not all that shabby. <br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-19163\" src=\"https:\/\/blog.kootenay-lake.ca\/wp-content\/uploads\/2016\/12\/circumzenithalarc1161217cs3.jpg\" alt=\"\" onclick=\"return false\" onmousedown=\"return false\" width=\"720\" height=\"720\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; It wasn&#8217;t the best I had seen, but this display of haloes in the direction of Nelson was better than any I had seen for a few years. I was alerted to it by the sight of a circumzenithal &hellip; <a href=\"https:\/\/blog.kootenay-lake.ca\/?p=19160\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[16,12],"tags":[],"class_list":["post-19160","post","type-post","status-publish","format-standard","hentry","category-scenes","category-weather"],"_links":{"self":[{"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/posts\/19160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19160"}],"version-history":[{"count":6,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/posts\/19160\/revisions"}],"predecessor-version":[{"id":19171,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=\/wp\/v2\/posts\/19160\/revisions\/19171"}],"wp:attachment":[{"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19160"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kootenay-lake.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}