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Sahara Desert is expanding

According to some newly published research in the peer-reviewed Journal of Climate, the Sahara Desert has expanded by 10 percent since 1920. Many deserts form in the belt of sinking air located around 30 degrees N and S latitude. This sinking air is associated with the Hadley cell, a vertical…
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What is an atmospheric temperature inversion and why are they important to farmers?

The University of Florida IFAS Extension newsletter posted a good scientific review of temperature inversions in the atmosphere that you might find useful. For this time of year they are especially important to know about because some frost prevention methods like using fans or helicopters depend on the presence of…
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Adventures in Mapping–Tornadoes

The Adventures in Mapping blog has a story this week about how the season migration in tornado events can be mapped just like the migration of wildebeest or other wandering animal or bird species. Tornadoes undergo a seasonal cycle of occurrence that is ultimately related to the sun’s angle, which…
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Grand Solar Minimum Ahead?

Here’s an excellent discussion of recent solar activity and the grand solar minimum which will be occurring shortly from my friend John Feldt of Blue Water Outlook, who has given me permission to share it. Solar activity has been rapidly decreasing since around 1980. The current cycle, Solar Cycle 24,…
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