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Post by massiveshibe on Dec 7, 2022 22:40:43 GMT -5
As someone who lives slightly south of the Tropic of Capricorn, I can say that overcast weather in temperate regions look usually look brighter than in the tropics, as opposed to the popular belief. Yes I’m aware that the sun angle affects brightness, but the effect is minimal and only present during noon. After 3PM, the sun angle is low regardless if it’s in the tropics or not.
In tropical and subtropical regions, the clouds are also much thicker and darker. One day during a storm, the clouds were so thick and dark, it got dark as nighttime, I even had to turn on the lights and the street lamps outside also automatically turned on. It was 4PM and summer. The sun was supposed to set at 7:30PM-8:00PM, but it seemed to be nighttime at 4PM.
This was of course based on my own experience only.
So do you think cloudy days in low latitudes are actually brighter than in high latitudes?
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Post by greysrigging on Dec 7, 2022 22:51:50 GMT -5
There is nothing more gloomy than a gloomy dark overcast and wet day in Melbourne ( 38*S ) in July'. Although a full thickness monsoonal cloud cover in Darwin ( 12*S ) in January is also very dark. My house is shaded by a jungle garden, but under a full cloud cover it is very dark indoors requiring the lights to be switched on, even at noon.
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Post by MET on Dec 8, 2022 9:04:30 GMT -5
It depends on the combination of cloud thickness and solar angle. The combination of thickest cloud and lowest solar angle should create a duller overcast theoretically. However the tropopause is lower in higher latitudes, meaning clouds even in overcast can't grow as thick as those in the tropics where large storm systems can be 50,000ft tall. Even with a high sun angle that will create severe gloom.
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