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Tuesday, July 7th, 2020

Bubbling Methane Emissions Caused By Ice-Free Days In Arctic Lakes

Although the Arctic is best known for frozen tundra, it also has a number of freshwater lakes that are covered in ice most of the year. But the length of time they are ice-covered is decreasing, and this is allowing methane to bubble into the atmosphere. Globally, lakes are responsible for nearly one-third of biogenic

Tuesday, June 23rd, 2020

Heat and Drought to Stifle West Through End of June

Building heat will continue to blossom this week across much of the West, bringing several days of triple-digit heat for some communities and worsening drought for others. Cities such as Fresno and Bakersfield in the San Joaquin Valley of California topped out over the previous weekend around the 100 degrees Fahrenheit mark, with even more

Tuesday, June 9th, 2020

Celebrating World Oceans Day

June 8, 2020, was World Oceans Day, which aims to raise awareness in protecting and restoring our oceans and its resources. Earth observing satellites continuously watch over the ocean to monitor and protect our environment. Covering more than 70 percent of Earth’s surface, the oceans are what makes this our “Blue Planet.” Our seas influence

Tuesday, May 26th, 2020

Heat Advisories Issued as Record-Challenging Warmth Builds Across Southwest

A recent pattern change has allowed stifling heat to build gradually across the southwestern United States. As the week beginning May 25, 2020, continues, meteorologists caution that the heat will further intensify over the region, which will allow numerous daily records from Sacramento to Phoenix to be challenged. Temperatures began to climb on May 24,

Tuesday, May 12th, 2020

NASA Space Laser Missions Map 16 Years of Ice Sheet Loss

Using the most advanced Earth-observing laser instrument NASA has ever flown in space, scientists have made precise, detailed measurements of how the elevation of the Greenland and Antarctic ice sheets have changed over 16 years.  The results provide insights into how the polar ice sheets are changing, demonstrating definitively that small gains of ice in

Tuesday, April 28th, 2020

NASA Reports Arctic Stratospheric Ozone Depletion Hit Record Low in March

Ozone levels above the Arctic reached a record low for March, NASA researchers report. An analysis of satellite observations show that ozone levels reached their lowest point on March 12, 2020, at 205 Dobson units. Although such low levels are rare, they are not unprecedented. Similar low ozone levels occurred in the upper atmosphere, or

Tuesday, April 14th, 2020

World’s Largest Citizen Science Initiative Launched for Earth Day 2020

Earth Challenge 2020 (Earth Challenge) launched on April 9, 2020, marking the 50th anniversary of Earth Day. This project creates a global expansion of open-source citizen science data and opportunities for civic engagement.  Earth Challenge has two goals. First, to aggregate existing citizen science from around the world and make it interoperable, creating a coordinated

Tuesday, March 31st, 2020

Less Ice, More Methane from Northern Lakes: A Result from Global Warming

Shorter and warmer winters lead to an increase in emissions of methane from northern lakes, according to a new study by scientists in Finland and the United States. Longer ice-free periods contribute to increased methane emissions. In Finland, emissions of methane from lakes could go up by as much as 60 percent.  An international study

Tuesday, March 24th, 2020

Shedding Light on How Much Carbon Tropical Forests Can Absorb

Tropical forest ecosystems are an important part of the global carbon cycle as they take up and store large amounts of carbon dioxide. It is uncertain, however, how much these forests’ ability to take up and store carbon differ between forests with high vs. low species richness. New International Institute for Applied Systems Analysis (IIASA)

Tuesday, March 17th, 2020

NASA Satellites Help Forecast Yellowstone Wildlife Migration

The bison population has grown rapidly during the last two decades in Yellowstone National Park. This creates complex situations for wildlife managers when the animals follow good grazing opportunities beyond the boundaries of the park and come into contact with surrounding communities. A NASA study has now found a link between climate change effects on

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