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By Bob Valen 

Let's hear it for evapotranspiration!

Weather Watcher


We just witnessed an event that is part of the Water Cycle on our home planet — snow melt. Though the quick disappearance of snow is not fully attributed to melt-off. There are other events going on as the snow gradually disappears. Yes, there were waterfalls on the Grand Coulee walls, lots of runoff water dumped into Banks Lake. Those waterfalls were a part, albeit a good part, of the snow disappearance. Let’s also take a look at evapotranspiration (e·vap·o·tran·spi·ra·tion), generally the sum of water evaporation and transpiration.

Here’s what’s going on when evapotranspirat...

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