The Poles make fresh water, by repeated cooling and warming sea water. We get rivers of brine flowing down, and pure water ice rising up.
We can use this to desalinate sea water. We have 10m of solar panels, and we use this current curing the day, to run a Carnot heat pump, and cool sea water down to – 2oC, in a little reservoir filled with sea water.
About 6pm we extract all the ice. This will be pure water ice, as sea water freezes at -22oC. And we empty the reservoir into the sea – to get rid of the brine.
The next morning, we fill and cool another batch of ea water. We have collected the ice in another reservoir, and the heat of the day turns this into liquid water.
That we pump to a holding reservoir – and use to irrigate farm land. The farmers pay for the water, and this pays for the plant, and then funds new plants.
So every year, we multiply the amount of fresh water in the dry lands, by a factor of 4. No high expense, or dangerous high pressures.
So we irrigate Arabia, and turn all the extra CO2 released by burning the Fossil Fuels, back into active life. This process goes on today – as there is a massive excess of photosynthetic organisms on nature – so in the last 200 years we have restore 15% of the nature that died in the mass extinctions of prehistory.
Which means there is a static 2 parts per million in the global air. Any person who argues with this is a nuclear funded moron, with untreated mental health problems.
Incidentally ½ a minute of 8 W 1 MHz ultrasound to each side of the head fixes mental health.