Gravity waves play a key role in driving upper atmosphere circulations but are poorly understood. New high-resolution simulations are resolving complex wave behaviors with unprecedented detail.Read More »Atmospheric Sciences
Wind observations made by a high-latitude radar network shed new light on the rapid response of atmospheric tides in the upper mesosphere to stratospheric sudden warmings.Read More »Atmospheric Sciences
One research group studied noctilucent clouds at large distances from a different point of view, using cameras aboard a meteorological balloon that sailed into the stratosphere.Read More »Atmospheric Sciences
Year-round observations show gravity waves above Antarctica exhibit seasonal patterns that peak in winter, which could help researchers trace the source of this mysterious phenomenon.Read More »
Polar vortices play a central role in coupling the atmosphere from the ground to the middle atmosphere. New satellite diagnostics describe mesospheric polar vortices and coupling to lower altitudes.Read More »Atmospheric Sciences
High above Earth’s surface, air temperatures occasionally increase suddenly, producing widespread effects on weather, air chemistry, and telecommunications.Read More »Atmospheric Sciences
Measurements show that a decline in chlorine due to the Montreal Protocol has resulted in about 20 percent less ozone depletion during the Antarctic winter than there was in 2005.Read More »Atmospheric Sciences
Gravity waves in the atmosphere drive weather around the globe. A new study helps interpret gravity wave data and identify annual patterns of this atmospheric mechanism.Read More »
