Depleting our environmental trust fund

Climate change is already doing a lot of harm. One of the harms is the drying of land masses. The people who live on these land masses depend on fresh water not only to drink but to grow crops for food. As surface water disappears, humanity is dipping into the corpus of its geological endowment, groundwater.

“Groundwater is ubiquitous across the globe, but its quality and depth vary, as does its potential to be replenished by rainfall. Major groundwater basins — the deep and often high-quality aquifers — underlie roughly one-third of the planet, including roughly half of Africa, Europe and South America. But many of those aquifers took millions of years to form and might take thousands of years to refill. Instead, a significant portion of the water taken from underground flows off the land through rivers and on to the oceans.

“The researchers were surprised to find that the loss of water on the continents has grown so dramatically that it has become one of the largest causes of global sea level rise. Moisture lost to evaporation and drought, plus runoff from pumped groundwater, now outpaces the melting of glaciers and the ice sheets of either Antarctica or Greenland as the largest contributor of water to the oceans.”

In addition to water lost to aquifer replenishment, as a driver of sea level rise it contributes to salt water intrusion on the coasts, contaminating ground water and destroying coastal land for farming.

“Around 2014, though, the pace of drying appears to have accelerated, the authors found, and is now growing by an area twice the size of California each year. “It’s like this sort of creeping disaster that has taken over the continents in ways that no one was really anticipating,” Famiglietti said. (Six other researchers also contributed to the study.) The parts of the world drying most acutely are becoming interconnected, forming what the study’s authors describe as “mega” regions spreading across the earth’s mid-latitudes. One of those regions covers almost the whole of Europe, the Middle East, North Africa and parts of Asia.”

Not only is nothing being done to abate the progression of devastation, the Trump Administration and the GOP are making things worse by defunding renewables and encouraging fossil fuel consumption. At this rate, humanity won’t starve to death or die of thirst, it will destroy itself through resource wars as the people who lose access to local food and water decide to take it from those who still have it.

climate change and the loss of groundwater