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The science of sunlight in different zones

Jon 6a SE MA
8 years ago

This graph shows how sunlight energy varies dependent on which latitude you are located.

The top curve is the power of sunlight at the equator or zero degrees latitude. The lowest curve is at the North Pole (or South Pole). The power (sunlight) hitting the Earth (all averages). As a location increases in latitude the energy decreases by a factor of 1 1/2.

23.5 degrees North is about the location of Mexico City. 45 degrees is just North of the US border.
My house in SE MA is at 41.9 degrees North

Montreal is 45 degrees

New York is 40 degrees

Atlanta is 33 degrees

Miami is 25 degrees

If someone took the time they could, by using the average sunlight power in the graph and the latitude calculate what effect latitude has on power from sunlight.

Then there would be elevation, desert areas, seacoast, lakes and a whole host of other variables that affect growing plants.

I just thought it was interesting to note that the progressive decrease in the angle of solar illumination on the earth with increasing latitude reduces the average solar irradiance by an additional one-half.

...or, you could just realize that a 'half day', 'full sun', 'morning sun' are spongeable factors dependent at least by your latitude and perhaps your attitude ;- ).


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