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EARTH OBSERVATION
NASA satellite images Alaska's scorched earth
by Brooks Hays
Fairbanks, Alaska (UPI) Jul 31, 2015


disclaimer: image is for illustration purposes only

Alaska was on pace for a record-breaking year of wildfires, but an uptick in precipitation has cooled things.

Even if fires have died down in recent days, the evidence of the state's combustible summer is still readily apparent -- even from space.

A newly acquired false-color photo take by Operational Land Imager, the camera on NASA's Landsat 8 satellite, shows the damage done by the Tanana fires in central Alaska.

Though recently quelled by rain, the Tanana fires burned for much of June, forcing the town's 300 residents to evacuate. As evidenced by the aerial image, the fires burned 496,000 acres. The flames' scar can be seen in brown.

No other group of fires accounted for so much damage. Of the nearly five million acres burned by wildfires in Alaska so far in 2015, the Tanana fires account for 10 percent of the damage.

Some researchers say Alaska's especially hot wildfire season is evidence of global warming's far reaching effects.

"Earlier in the spring, the state faced a record-breaking heat wave," NASA officials wrote in a blog post. "On average, Alaska has warmed by 3.4 degrees Fahrenheit (1.8 degrees Celsius) since the 1950s, about twice the national average."

Not only are the increasingly intense fires the result of global warming, researchers say, but they also may be facilitating the release of large amounts of sequestered carbon -- further exacerbating the greenhouse gas effect.


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Pasadena CA (JPL) Aug 01, 2015
A new NASA study has concluded California accumulated a debt of about 20 inches of precipitation between 2012 and 2015 - the average amount expected to fall in the state in a single year. The deficit was driven primarily by a lack of air currents moving inland from the Pacific Ocean that are rich in water vapor. In an average year, 20 to 50 percent of California's precipitation comes from ... read more


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