Update: Carbon Dioxide Concentration
January's global average concentration of atmospheric carbon dioxide (CO₂) was about 413 parts per million (ppm), up roughly 25 ppm from a decade ago.

Update: Ice Sheet Melt
We have updated our "vital sign" dashboard with new ice sheet data as seen from our twin GRACE-FO satellites. Find out how much ice Greenland and Antarctica have been losing per year since 2002.

Milankovitch Cycles and Their Role in Earth's Climate
Small cyclical variations in the shape of Earth's orbit, its wobble and the angle its axis is tilted play key roles in influencing Earth's climate over timespans of tens of thousands to hundreds of thousands of years.

NASA Prepares for New Science Flights Above Coastal Louisiana
As sea levels rise, some areas of the Mississippi Delta are drowning, while others are actually gaining mass. NASA's Delta-X heads to the delta to figure out why.

Probing the Hazy Mysteries of Marine Clouds
A new NASA airborne science mission will amass about 1,200 hours of data to help climate and weather modelers better understand how aerosol particles and meteorological processes affect clouds.

Climate Change Could Trigger More Landslides in High Mountain Asia
More frequent and intense rainfall events due to climate change could cause more landslides in the High Mountain Asia region of China, Tibet and Nepal, according to the first quantitative study of the link between precipitation and landslides in the region.

Arctic Ice Melt Is Changing Ocean Currents
Using 12 years of satellite data, NASA scientists have measured how the influx of cold, fresh water is affecting the Beaufort Gyre, a major Arctic current.

Images of Change: Snow in Southern California
A potent winter storm dropped significant amounts of snow on Southern Californian mountains and high deserts in late December 2019.

Images of Change: Shrinking Valdecañas Reservoir Exposes Spanish Stonehenge
Hot, dry conditions at Spain's Valdecañas Reservoir lowered the water level enough to expose an ancient monument called "the Dolmen of Guadalperal."

Images of Change: Australian Dust Paints New Zealand Glaciers
Satellite images show Australian-blown dust and ash on New Zealand's ice and snow. This phenomenon began unusually early in 2019.

Images of Change: Desert Farming Grows in Saudi Arabia as Groundwater Shrinks
The Saudi Arabian town of Wadi ad-Dawasir saw a crop increase, irrigated by a shrinking supply of groundwater.

NASA's Global Climate Change website is produced by the Earth Science Communications Team at NASA's Jet Propulsion Laboratory/Caltech. To learn more, visit our website at

› climate.nasa.gov