When you first think about winter one normally thinks about snow. Those small crystalline ice particles disguise the world around us and seem to hide the imperfections. However as I looked at the recently released images from NASA’s Earth Observatory and saw the following (click on the image to see larger):

I realized that the while snow is often associated with winter in the Northern Hemisphere.I did a bit more research by overlaying longitude and latitude on the maps and saw that most of the snow was located above the 40N line as seen below. Therefore it would seem by symmetry that it should also snow beneath the 40S line. However since there is very little land mass beneath this line and the warm maritime environment, snow occurs only in elevated regions.

This would seem to be the reason that there is very little snow in the southern hemisphere. Its interesting to see that misconceptions I never thought I had exist and that the opposite can be true. What are some of your favorite misconceptions?

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