tag:blogger.com,1999:blog-4572286363399496963.post1212012303275733764..comments2024-03-28T07:09:59.093-08:00Comments on Deep Cold: Alaska Weather & Climate: Alaska BrightnessRickhttp://www.blogger.com/profile/03946704894714514716noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-4572286363399496963.post-62004796478502731422015-06-09T18:21:09.128-08:002015-06-09T18:21:09.128-08:00I think it's safe to say that your Twitter fee...I think it's safe to say that your Twitter feed recipients are of the more professional type. I think that most "common folk" don't use Twitter. And there is quite a few Outsiders who commented on your Facebook post. But I agree that it's an Alaskan thing. When I lived in the Lower 48, the lack of darkness was never an issue; I always got enough sleep and the stars always came out.<br /><br />It would be interesting to see how many views previous posts got from people looking around the Page. And how many people will stick around and follow along now.<br /><br />Perhaps you should do posts like "Is the 4th of July going to be rainy?"Eric Lundellhttps://www.blogger.com/profile/17914784378747801359noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-66674955059662560352015-06-09T14:11:29.693-08:002015-06-09T14:11:29.693-08:00Thanks Eric. For everyone else's benefit, the ...Thanks Eric. For everyone else's benefit, the error you refer to was my formula added 24 hours of daylight on April 31st and June 31st. Of course those are fictitious dates. The net result was an extra 48 hours of daylight and Civil Twilight for every location on earth. Therefore, the error changed the y-intercept of the lines but not the relative magnitude. As soon as I discovered the error I made new maps and charts and updated them on this blog post and fixed the text description immediately. Unfortunately on FB, you cannot swap out images. Therefore, a follow-up post is in order on that site.<br /><br />As a side note, the popularity of the FB posts caught me quite off guard. A typical post on my page generates 100-200 views, a handful of Likes, about 1 Comment, and an occasional Share. The post showing the number of hours of daylight on the summer solstice is up to 337,536 views, 8,109 Likes, 1,226 Comments, and 3,917 Shares. It really was lightning in a bottle. Interestingly, the discussion of summer daylight is near and dear to the heart of Alaskans. On my Twitter feed, which is mainly followed by people in other states, a typical post gets about 100 views, a few Favorites, and a couple of Retweets. My Twitter post on the hours of daylight on the summer solstice received 82 views, no Favorites, and no Retweets. It really is an Alaska thing.Climatologist49https://www.blogger.com/profile/04560505931210357679noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-80937269076684084042015-06-09T13:23:22.653-08:002015-06-09T13:23:22.653-08:00Brian, congratulations on your many likes with the...Brian, congratulations on your many likes with the identical post on Facebook. Probably better that people like daylight amounts than the tin foil hats.<br /><br />Are you going to update this post to reflect the small calculation correction you found as announced on Facebook?Eric Lundellhttps://www.blogger.com/profile/17914784378747801359noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-9720695786435974702015-06-09T05:30:07.983-08:002015-06-09T05:30:07.983-08:00Very nice, Brian. I've experienced the profou...Very nice, Brian. I've experienced the profound difference in sunrise/sunset rates in the tropics and in the Arctic, but didn't realize that it added up to such a large average difference in daylight. Good information.<br /><br />In a somewhat related matter, I've always pondered the effect of solar angle on hours of sunshine, owing to cloud shading effects. When the sun is low in the sky, it is much more likely that even partly cloudy conditions will block the sun (owing to non-zero cloud depth). So even though northern Alaska gets the most daylight, it will get fewer hours of sunshine than all but the cloudiest places in the tropics. I suppose one could do the calculations for some hypothetical cloud fractions and depths.<br />Richard Jameshttps://www.blogger.com/profile/08313902028896263276noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-40864874201837464942015-06-08T22:44:43.220-08:002015-06-08T22:44:43.220-08:00Thanks Gary. I should add that since the earth is ...Thanks Gary. I should add that since the earth is farther from the sun in the northern hemisphere summer, the revolution speed is slower. The reverse is true in the southern hemisphere. Therefore, the cumulative daylight/twilight is longer in the norther hemisphere summer than the southern hemisphere. We also see this when noting that Barrow has more 24-hour daylight days in summer than 0-hour daylight days in winter. I'll add a chart to demonstrate this tomorrow.Climatologist49https://www.blogger.com/profile/04560505931210357679noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-23993674660322050432015-06-08T21:08:39.928-08:002015-06-08T21:08:39.928-08:00Hi Brian good post. So this is why we put aluminum...Hi Brian good post. So this is why we put aluminum foil on bedroom windows in Summer? After 50 years here the daylight at night doesn't bother me. <br /><br />Now it's time for the Midnight Zombies to mow their lawns and walk about looking for dark.<br /><br />GaryNL7Yhttps://www.blogger.com/profile/15874712728971005352noreply@blogger.com