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Update: Carbon dioxide concentration
September's global average concentration of atmospheric carbon dioxide (CO2) was about 407 parts per million (ppm).
Update: Sea level change
Global average sea level continues to rise at 3.4 millimeters per year. Get the latest space-based observations.
Update: Arctic sea ice
Arctic sea ice reaches its minimum extent every September. September Arctic sea ice is now declining at a rate of 13.2 percent per decade.
NASA estimates global reach of atmospheric rivers
A recent study estimates the global impact of atmospheric rivers on floods and droughts, as well as the number of people affected by these atmospheric phenomena.
Prolific Earth gravity satellites end science mission
After more than 15 productive years in orbit, the U.S./German GRACE (Gravity Recovery and Climate Experiment) satellite mission has ended science operations.
First SAGE III atmospheric data released for public use
The first wave of atmospheric data from the Stratospheric Aerosol and Gas Experiment III (SAGE III), a NASA instrument that launched to the International Space Station earlier this year, is now available for public use.
Keeping an eye on Earth’s energy budget
The Clouds and the Earth’s Radiant Energy System (CERES) instrument is scheduled to launch into space in a few weeks, where it will collect top-of-atmosphere data on Earth's "energy budget."
ACT-America aims to tell four-season greenhouse gas story
Researchers returned to the field to measure how weather systems transport carbon dioxide and methane through the atmosphere over the eastern United States, hoping to improve our understanding of where those greenhouse gases originate.
Satellites see Silicon Valley's quick drought recovery
A space-based study finds underground water reserves in California's Silicon Valley rebounded quickly from the recent drought in response to conservation measures.
Blog: Searching the bluest blue
Scientists sample microscopic life in the South Pacific Ocean to validate space-based ocean color observations.
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