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Tuesday, October 1st, 2019

Mapping the Amazon

The Amazon basin is exceptional. It spans at least 6 million square kilometers (2.3 million square miles), nearly twice the size of India. It is home to Earth’s largest rainforest as well as the largest river for the volume of the flow and the size of the drainage basin. The rainforest, which covers about 80

Tuesday, September 24th, 2019

2019 Arctic Sea Ice Minimum Is Second Lowest

Arctic sea ice reached its annual summer minimum on Sept. 18, 2019, according to NASA and the National Snow and Ice Data Center (NSIDC). Analysis of satellite data by NSIDC and NASA showed that the extent of ice cover this year effectively tied 2007 and 2016 as the second lowest in the satellite record, which

Tuesday, September 17th, 2019

Satellite Data Record Shows Climate Change’s Impact on Fires

Hot and dry. These are the watchwords for large fires. While every fire needs a spark to ignite and fuel to burn, it’s the hot and dry conditions in the atmosphere that determine the likelihood of a fire starting, its intensity and the speed at which it spreads. Over the past several decades, as the

Tuesday, September 10th, 2019

NASA’s ARIA Team Maps Flooding in Bahamas

The Advanced Rapid Imaging and Analysis (ARIA) team at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., in collaboration with the Earth Observatory of Singapore (EOS), used synthetic aperture radar data from the European Union’s Copernicus Sentinel-1 satellites to produce this flood map of the Bahamas. The light-blue color indicates areas that were likely flooded when

Tuesday, September 3rd, 2019

Landsat Illustrates Five Decades of Change to Greenland Glaciers

Ice fronts have retreated, rocky peaks are more exposed, fewer icebergs drift to the ocean: the branching network of glaciers that empty into Greenland’s Sermilik Fjord has changed significantly in the last half century. Comparing Landsat images from 1972 and 2019, those changes and more come into view. The glaciers appear brownish grey in this

Tuesday, August 27th, 2019

Fires Ravage the Amazon

Thousands of fires have broken out in the Amazon rainforest. Satellite data show that there are almost four times as many fires this year compared to the same period last year. Apart from Brazil, parts of Peru, Bolivia, Paraguay and Argentina have also been affected. While forest fires normally occur in Brazil’s dry season, which

Tuesday, August 20th, 2019

Climate Report Shows Effects of Planet’s Warming Across Multitudes of Key Indicators

A new “State of the Climate” report released on Aug. 12, 2019, by the American Meteorological Society (AMS) confirms that 2018 was one of the hottest years on record. Global surface temperatures continued the trend in which every year since the turn of the 21st century has been hotter than any year experienced in the

Thursday, August 8th, 2019

NASA Targets Coastal Ecosystems with New Space Sensor

NASA selected a space-based instrument under its Earth Venture Instrument (EVI) portfolio that will make observations of coastal waters to help protect ecosystem sustainability, improve resource management and enhance economic activity. The selected Geosynchronous Littoral Imaging and Monitoring Radiometer (GLIMR) instrument, led by principal investigator Joseph Salisbury at the University of New Hampshire, Durham, will

Tuesday, August 6th, 2019

Loss of Arctic’s Reflective Sea Ice Will Advance Global Warming by 25 Years

Losing the remaining Arctic sea ice and its ability to reflect incoming solar energy back to space would be equivalent to adding one trillion tons of CO2 to the atmosphere, on top of the 2.4 trillion tons emitted since the Industrial Age, according to current and former researchers from Scripps Institution of Oceanography at the

Tuesday, July 30th, 2019

Flowing Antarctic Ice Mapped 10 Times More Accurately

Far more accurate than any previous map, this new representation of glacier flows in Antarctica opens the door to an improved understanding of the vast continent and the future pace of sea-level rise. To create the new map, researchers at the University of California, Irvine, and NASA’s Jet Propulsion Laboratory in Pasadena, Calif., combined input

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