Chapter 9: Evaporation (E)

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Chapter 9: Evaporation (E)

Post by admin » Tue Oct 06, 2015 9:42 am

Originally posted by Rem Westland - 03/10/2013

When we know the Lake area and we know the temperatures in the course of the year when water is open to the air, we can know the amount of water we lose from our Lake because of evaporation. If climate change means temperature warming in our part of Ontario then the value of E will rise in the coming years. Unless something changes on the other side of the equation it also means that Lake volume will decrease. If Lake volume decreases and Lake quality is already a problem...then increasing concentration of toxins will result. There will be a lot to say in this chapter as well.
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Re: Chapter 9: Evaporation (E)

Post by admin » Tue Oct 06, 2015 9:43 am

Originally posted by Rem Westland - 08/10/2013

There are some estimates available for eastern Ontario. On average, the rate of evaporation has been in the order of 19 inches per year from lakes in our area. When we have a number for the area of Sharbot Lake we will be able to say what this translates into on a yearly, or per second (to match outflow measures), basis. Since the evaporation rate is 19/35 times precipitation (see chapter on Precipitation) then evaporation reduces water level by about 1.3 feet annually. What this means in water volume and rate of water loss can also be calculated using these data (434 million cubic feet, or 14 cubic feet per second).
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