Animation showing the monthly variation of sea ice extent in the Arctic from 2016 through 2018.
Resource Type: Videos
When climate conditions, such as temperature and precipitation, vary from the expected averages this is called climate variability. Natural changes in the Earth system can cause climate variability, but scientists are concerned about climate variability resulting from human-caused climate change.
Resource Type: Information
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The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer.
A blizzard isn’t just any old snowstorm. It’s extreme winter weather. Watch and learn what makes these storms special.
Resource Type: Videos
Discover how a weather front can cause clouds and storms with rain or snow.
Resource Type: Videos
The amount of water vapor in the air is called humidity.
Resource Type: Information
See how Earth's temperature would change if the Sun's brightness increased or dimmed or if Earth's albedo was different.
Resource Type: Information, Simulations
NCAR scientist Falko Judt, talks about chaos theory, the butterfly effect, and why we will (likely) never be able to forecast the weather for more than 3 weeks into the future.
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