{"id":919,"date":"2014-06-03T09:24:11","date_gmt":"2014-06-03T16:24:11","guid":{"rendered":"https:\/\/blogs.ubc.ca\/aitkenlab\/?p=919"},"modified":"2018-01-28T11:53:55","modified_gmt":"2018-01-28T18:53:55","slug":"simulating-climates-in-growth-chambers-choosing-day-length-regimes","status":"publish","type":"post","link":"https:\/\/blogs.ubc.ca\/aitkenlab\/2014\/06\/03\/simulating-climates-in-growth-chambers-choosing-day-length-regimes\/","title":{"rendered":"Simulating climates in growth chambers &#8211; Choosing day length regimes"},"content":{"rendered":"<p><em>This post is part of the series\u00a0<a href=\"https:\/\/blogs.ubc.ca\/aitkenlab\/2014\/06\/01\/climate-vs-weather-the-why-and-how-of-simulating-climates-in-growth-chambers\/\">Simulating Climates in Growth Chambers<\/a>.<\/em><\/p>\n<p>Day length for a given latitude can be obtained from online programs, such as the online photoperiod calculator at <a href=\"http:\/\/www.sci.fi\/~benefon\/sol.html\">http:\/\/www.sci.fi\/~benefon\/sol.html<\/a> Day length was reprogrammed weekly for convenience. Latitude can be chosen corresponding to a target location (e.g., Williams Lake, 52\u00b007\u2019N) or latitude representative of an area, e.g. the province of B.C. (54.5\u00b0N).<\/p>\n<p>Some practical limitations may rise here. Until LED lights become cheaper still, any light source also generates heat. It may not be possible to program a sunrise while temperatures are still below 4\u00b0C. This depends on the hardware of the climate chamber. In this case, consider turning on the lights gradually, reducing light intensity, and leaving off any incandescent lights until later, as they generate a relatively high percentage of heat.<\/p>\n<p>Next up on the list is\u00a0simulating winter conditions, heat waves, stimulating germination and bud set.\u00a0You can also go back through some of our older posts on simulating climates in growth chambers.<\/p>\n<figure id=\"attachment_921\" aria-describedby=\"caption-attachment-921\" style=\"width: 634px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.ubc.ca\/aitkenlab\/files\/2014\/05\/Figure7.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-921\" src=\"https:\/\/blogs.ubc.ca\/aitkenlab\/files\/2014\/05\/Figure7.jpg\" alt=\" Day length during the growing season at 54.5 \u00b0N.   \" width=\"634\" height=\"502\" srcset=\"https:\/\/blogs.ubc.ca\/aitkenlab\/files\/2014\/05\/Figure7.jpg 634w, https:\/\/blogs.ubc.ca\/aitkenlab\/files\/2014\/05\/Figure7-300x237.jpg 300w\" sizes=\"auto, (max-width: 634px) 100vw, 634px\" \/><\/a><figcaption id=\"caption-attachment-921\" class=\"wp-caption-text\">Day length during the growing season at 54.5 \u00b0N.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>This post is part of the series\u00a0Simulating Climates in Growth Chambers. Day length for a given latitude can be obtained from online programs, such as the online photoperiod calculator at http:\/\/www.sci.fi\/~benefon\/sol.html Day length was reprogrammed weekly for convenience. Latitude can be chosen corresponding to a target location (e.g., Williams Lake, 52\u00b007\u2019N) or latitude representative of [&hellip;]<\/p>\n","protected":false},"author":16793,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[369483,1],"tags":[604122,747519],"class_list":["post-919","post","type-post","status-publish","format-standard","hentry","category-techniques","category-uncategorized","tag-day-length","tag-growth-chambers"],"_links":{"self":[{"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/posts\/919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/users\/16793"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/comments?post=919"}],"version-history":[{"count":2,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/posts\/919\/revisions"}],"predecessor-version":[{"id":953,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/posts\/919\/revisions\/953"}],"wp:attachment":[{"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/media?parent=919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/categories?post=919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/aitkenlab\/wp-json\/wp\/v2\/tags?post=919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}