One of the greatest tools used by oceanographers today for measuring ocean processes is the CTD. CTD stands for Conductivity, Temperature and Depth. Conductivity is a measure of ocean salinity. The ...

What exactly does it mean for storms to get “stronger”? Does it mean faster winds? A larger wind field? Lower pressure at the center? More rain and snowfall? Higher storm surges? “You have to remember ...

Four years ago today, one of the largest non-volcanic landslides in U.S. history began high on the northern wall of Utah’s Bingham Canyon mine. During two main bursts of activity that day, several ...

Today (March 8, 2015) marks our tenth day in Kulusuk. We are now officially three days late getting into the field. This is pretty typical for field work in this area but we are still a bit restless, ...

When NASA launched the Nimbus-4 satellite 50 years ago, nobody knew the ozone layer over Antarctica was thinning. And nobody knew that chlorofluorocarbons (CFCs)—long-lived chemicals that had been ...

Update on March 19, 2025: This Landsat image shows fields in southern Poland that have taken on ribbon-like shapes after generations of land division. Congratulations to Annie Burgess for being the ...

All matter in the universe that has a temperature above absolute zero (the temperature at which all atomic or molecular motion stops) radiates energy across a range of wavelengths in the ...

The cost and benefits of global warming will vary greatly from area to area. For moderate climate change, the balance can be difficult to assess. But the larger the change in climate, the more ...

Joshua Stevens was the lead visualizer of NASA’s Earth Observatory from 2015 to 2023. He has researched and taught cartographic design, geovisual analytics, and remote sensing for more than a decade.

Welcome, teachers, to Mission: Biomes! This site was designed for teachers to use in classrooms as a supplementary, interdisciplinary unit. Mission: Biomes is especially appropriate for grades 3 ...

Yes. Atmospheric temperatures have been measured by a series of satellites dating back to 1979. Because each satellite operated differently, scientists have disagreed about how to correct the data for ...

Three hundred forty watts per square meter of incoming solar power is a global average; solar illumination varies in space and time. The annual amount of incoming solar energy varies considerably from ...