We have a research plan to capture data that will allow us to quantify cooling effects, select other sites and determine if we need 150,000 km² or only 30,000 km² of lakes to offset global warming.
A top objective is to take advantage of the recent (April 2019) abnormal flooding of Lake Eyre in South Australia. This is a highly evaporative area (3 meters/annum) so the 6 meters deep lake will evaporate quickly. It may not flood again for ten years.
We have stated the research using satellite data but on the ground data acquisition is estimated to cost $437,000.