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Old 01-06-2016, 09:35 AM
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Originally Posted by nei View Post
I thought the cloudiness was mainly the last week or so, maybe week and a half? Blue Hill Observatory near Boston records sunshine with a C-S recorder but it takes them a month after the end of the month to post sunshine.

If NYC and Boston had anything like we had, it was likely below average sunshine hours.

Blog | Chicago Weather Center: Skilling's Forecast and Chicago Severe Weather Alerts

This was one of our cloudier Decembers.... With 29% of 285.5 hours possible in December comes out to 82.8 hours using the Foster sunshine recorder.

Last edited by chicagogeorge; 01-06-2016 at 09:55 AM..
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Old 01-06-2016, 09:46 AM
Location: New York
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Originally Posted by tom77falcons View Post
But we don't know the total sunshine hours for NYC in December. Based on what I saw here, it was cloudy dad after day with rain or showers. I'll bet NYC sunshine hours were very low. But since NOAA gave up on that, we can't compare unless we convert the solar radiation data. I may do that and see what NYC got.
By our standards December was fairly gloomy, but I can assure you we (Mid-Atlantic) saw more than 36 hours of sunshine. Looking at Central Park's hourly observations on wunderground I counted more than 36 hours of sunshine between Dec 3 and Dec 7th alone, and I was being conservative. Not the most scientific approach, but I have no idea how to convert solar radiation data, I didn't even know that was a thing lol. I hate that sunshine hours aren't recorded, makes me wonder if solar panels have the ability to record such data.
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