Unfortunately…
Mexico has not used that key and the solution remains securely locked. Mexico has expressed a commitment to helping solve Climate Change by their signing the Paris Accord, but seems oblivious to this easy opportunity which only they can accomplish.
What is this easy opportunity?
Fill Laguna Salada with ocean water from the Sea of Cortez.
What is Laguna Salada?
Laguna Salada is a below-sea-level depression which until recently has been filled with salt water.
Why is it dry?
In the past; Laguna Salada has been filled by water from the Colorado River. In recent years people have found more and more uses for the Colorado River water which inhibits the refilling of Laguna Salada because the Colorado River water is diverted before can arrive at Laguna Salada. See time-lapse video of Laguna Salada from 1984 to 2017 which illustrates the total loss of all water over time.
Why is this an easy opportunity?
There is an existing water path between Laguna Salada and the Sea of Cortez. This water path (dry creek bed) was straightened and shortened in recent years. The work that needs to be accomplished today is to make that canal deeper so that the non-existing out-flow from Laguna Salada is reversed to an in-flow from the Sea of Cortez. The effort required to is minimal because the canal already exists, its path is defined, and its length is about 60 miles (120 kilometers). There is minimal excavation required.
How does this help reverse Climate Change?
The first thing…
The first thing it accomplishes is a reduction of the ocean level. The oceans are rising because of the melting of the glaciers. The water that melts off them can flow into Laguna Salada. Any water which flows out of the ocean into Laguna Salada is water which is not in the ocean anymore, so the ocean level is lower.
The second thing…
The second thing is that Laguna Salada is located in a very hot, very dry, very windy place. This means that the water in Laguna Salada will evaporate quickly and be carried away from Laguna Salada. As the water evaporates, the ocean level will be further reduced to refill Laguna Salada.
The third thing…
The third thing is that the water which evaporates into the atmosphere will be carried away from Laguna Salada. Water vapor carried east or west will return to Laguna Salada as rain water flowing down from the flanking mountains. Water vapor carried south it will return to the Sea of Cortez. Water vapor carried north it will indirectly replenish the Colorado River watershed; which will begin to reverse the mega-drought and help the whole Colorado River watershed and it’s the varied water users.
The fourth thing…
The evaporation of water from Laguna Salada should lower local ambient temperatures. According to the USGS; heat is removed from the environment during evaporation, leading to a net cooling. In climates where the humidity is low and the temperatures are hot, evaporation can lower the air temperature by 20 degrees F.
The fifth thing…
Where ever the evaporated moisture falls it will encourage plant growth. Plant growth will help heal the atmosphere by absorbing carbon and by cooling the local environment.
The sixth thing…
Mexico holds part of another key…
After Laguna Salada is filled with sea water, a canal should be built north to the USA border so the USA can join with it and refill the Salton Sea. Refilling the Salton Sea continues all the above benefits to a second location.
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Best to use giothermal power to pump salten sea water to sea of cortez and pump clean water back from the sea as needed, with no danger of over flow.
Using geothermal power requires the use of energy to create the geothermal energy. Use of energy generates unwanted exhaust into the atmosphere. In this case, the energy use would be ongoing for decades, constantly exhausting into the atmosphere.
Conversely, creating an open gravity flow water path from Sea of Cortez to Salton Sea uses energy only in its creation, after that only gravity is used to Move the Water! This is sustainable for decades with no further energy use.
Move the Water! also provides the opportunity to generate electric energy from the water flow. This type of energy does not pollute our atmosphere. If you wish to pump water from Salton Sea to circulate the water, this clean energy could be used for that task.
Work with Cucapah people to create salt-water fishery, bird habitat and jobs for local people. Use gravity for the connection to the Sea of Cortez. Avoid large amounts of construction use whatever is in place. What is the minimum required to get this going?
You ask: < What is the minimum required to get this going? >
That is an excellent question. I guess the minimum would be to get the concept into public discussion so more know of it and can see its benefits. Ultimately it will take recognition and action from the Federal Governments that this must be done, but they will not act unless they are pushed to do so by public awareness and comments.