Monday, September 9, 2013

No Snow Capped Mountains

How does Climate Change effect us? In obvious ways, like more severe weather, but also in ways it's hard to comprehend. Like getting a visual example of what happens when our climate is too warm to allow snowfall on mountain tops which then melt and feed our water supply.



Snipped: Elephant Butte Reservoir dwindled to its lowest level in 41 years during the summer of 2013, despite monsoon rains in early July. It had been filled nearly to capacity for most of 1985 to 2000; the left-hand image from 1994 shows it about 89 percent full. At right, it has been reduced to about 3 percent. Elephant Butte is fed by the Rio Grande and is New Mexico’s largest reservoir. It provides water for about 90,000 acres (364 square kilometers) of farmland and nearly half the population of El Paso, Texas. Spring runoff from mountain snowpack was well below average in spring, 2013, and anemic rains throughout the beginning of the year left 80 percent of New Mexico grappling with either “extreme” or “exceptional” drought, the two most severe categories.

Images taken by the Operational Land Imager onboard Landsat 8