This winter could bring warmer temperatures to northern states and much-needed rain and snow to southern California and the Southwest.
seasonal variability
Posted inResearch Spotlights
To Help Fix the Hole in the Ozone Layer, Just Add Ice
Computer simulations show that adding tiny droplets of ice to the atmosphere during the spring could help eliminate chlorofluorocarbons and repair the hole in the ozone layer.
Posted inFeatures
Improving Predictions of Arctic Sea Ice Extent
Scientists in the Sea Ice Prediction Network share and discuss their user-oriented forecasts of seasonal sea ice in a changing Arctic.
Posted inResearch Spotlights
Ozone Hole to Remain Large During Cold Years
Despite the Montreal Protocol's success, it will take years of observations to be sure that regulations are allowing the ozone hole to recover.
Posted inResearch Spotlights
As Forests Age, Their Climate Effects Shift
The amount of moisture transpired from leaves increases for some tree species but drops on average.
Posted inResearch Spotlights
Changing Patterns in U.S. Air Quality
Over the northeast United States, ground-level ozone will peak in the winter rather than the summer thanks to continued reductions of regional nitrogen oxide emissions from smokestacks and tailpipes.
Posted inResearch Spotlights
A New Level of Understanding for Coastal Aquifers
New models of saltwater-freshwater mixing in coastal aquifers show how salinity varies throughout the year, with implications for what happens to groundwater pollutants before they reach the ocean.
Posted inResearch Spotlights
Circulation a Key Factor in Mediterranean Algal Growth
Scientists use satellite and robotic field data to study the environmental conditions driving phytoplankton blooms in the northwestern Mediterranean Sea.
Posted inNews
Holidays Really Do Light Up the Night
NASA and NOAA images reveal brighter than average December lights in the United States, brighter Ramadan nights in the Middle East.
Posted inNews
High Smog Levels Seen in Mecca During the Annual Pilgrimage
Surveys of air quality show that smog and other pollutants in Islam’s holiest city during the Hajj are among the worst in the world, prompting the Saudi government to look for ways to clear the air.