A record-setting day of rain in Oklahoma City caused widespread flooding in early May 2015. How rare was the event?
News & Features
From soybeans and sunflowers in North Dakota to cotton and winter wheat in Texas, large stretches of croplands in the U.S. Great Plains rely exclusively on rain. Those croplands are likely to face longer dry spells by mid-century.
Some of the chemicals that replaced ozone-harming CFCs are long-lived greenhouse gases. At NOAA's lab in Boulder, Colorado, chemist Steve Montzka leads the effort to monitor the concentration of CFC-substitutes and their potential impact on global warming.
AgroClimate.org is an open-source suite of tools and resources tailored to farmers and ranchers in the southeastern United States.
Forecasters estimate the chance that El Niño will continue through the end of 2015 at greater than 80%. What's behind this confident forecast?
Few things are more important to California’s water supply than the water content of the mountain snowpack at the start of the state’s warm season. In the latest round of our Climate Challenge game, experts and participants predicted the water content of the Sierra Nevada snowpack on May 1, 2015. The answer was disturbingly low.
For 800,000 years before the twentieth century, carbon dioxide levels in Earth’s atmosphere never exceeded 300 parts per million. In March 2015, the monthly average went above 400 ppm for the first time.
At the end of April 2015, almost 60 percent of Oklahoma was experiencing moderate to exceptional drought, and 30 percent of Texas was experiencing drought conditions. But according to the May drought outlook, conditions are likely to improve in the southern Plains this month.
How much warmer or colder than average would sea surface temperatures be in the eastern tropical Pacific Ocean in April 2015? That's the question we asked participants to answer in our new online game, in which players pit their predictive powers against experts’ opinions. The answer is in...
Why is it so difficult to make a good ENSO prediction during the Northern Hemisphere spring?