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Glaciers In The Sahara 2: Evaporative Denouement.

Date published: 2024-11-27T21:00:00Z

Again, I am not a boffin. I am just some schmuck on the Internet. If you know better, please send some corrections.

An update to my last Glaciers In The Sahara post - turns out that "the world’s glaciers could lose as much as 40% of their mass by 2100 with 1.5 degrees Celsius of warming". All you have to do is to multiply the results we got by 0.4.

And now, what about evaporation?

Let us say that because of evaporation, you would have to continuously pump water into the Sahara Sea.

A certain evaporation rate calculator says it will be about 2.9e+9 litre / second for the following values:

• Surface area of the glaciers and around the surface area of the Sahara: 10000000 km^2.
• Air speed (it is pretty windy over there): 20 km/hour.
• Calculator says it gets inaccurate at 40 degrees celsius, so: 30 degrees C.
• Relative humidity in steady state would be rather high, so: 70%.
• Result: 2.9e+9 litre / second.

We calculate how much it would cost per year:

units --terse --digits 2 '(
(2.9e+9 (litre / second)) * (0.01 unitedstatesdollar / litre)
)' 'unitedstatesdollar / year'

result: 9.2e+14

That is quite a lot of dollars.

We do the same for New Israeli Shekels:

units --terse --digits 2 '(
(2.9e+9 (litre / second)) * (0.01 unitedstatesdollar / litre)
)' 'israelnewshekel / year'

result: 3.4e+15

That is lots and lots of New Israeli Shekels to pour into the Sahara Sea.

Tag feeds:

• climatechange
• evaporation
• glaciers
• megaprojects
• sahara
• saharasea
• update

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