Trees release invisible gases that can create clouds, trap heat, and worsen pollution. Scientists are busy trying to unravel forests’ complex atmospheric contributions in a changing climate.
ozone
Posted inEditors' Highlights
Dust and Marine Halogens Team Up to Destroy Tropospheric Ozone
Mineral dust-activated halogen chemistry is an important yet under-studied natural sink of the tropospheric ozone with implications for the Earth’s oxidative balance, crop yields, and human health.
Posted inScience Updates
The Ozone Paradox: A Growing Cost of a Warmer Atmosphere
Mexico City’s air is getting cleaner, but ozone levels near the ground aren’t decreasing as fast as expected. Climate change is partly to blame.
Posted inResearch Spotlights
Rocket Launches and Reentries Harm Earth’s Ozone Layer
Solid-state fuels—recently used to help launch astronauts to the Moon for the first time in decades—appear to be the fuel type with the most detrimental effects on the ozone.
Posted inNews
Repairing the Ozone Layer May Take Longer Than Expected
A new study reveals that if left unchecked, unaccounted-for emissions of ozone-harming substances could delay the layer’s full recovery by almost a decade.
Posted inFeatures
Pollution Is Rampant. We Might As Well Make Use of It.
Human-made substances hold dangers for the environment, but they also give scientists a view into recent history.
Posted inNews
Some Summer Storms Spit Sooty Particles into the Stratosphere
Earth’s typically pristine stratosphere is filling with particles from wildfires and additional moisture due to strong convective storms.
Posted inEditors' Highlights
Southern Hemisphere Subtropical Lower Stratosphere is Warming
Warming of the Southern Hemisphere (SH) subtropical lower stratosphere is due to slowing of Brewer-Dobson Circulation, thus cooling the Antarctic lower stratosphere and masking anticipated ozone recovery.
Posted inEditors' Highlights
Defining the Tropopause in Chemical Transport Models
Synthetic tracers are useful in defining the chemically-heterogeneous tropopause in chemical transport models, especially where more traditional gradient-based tropopause methods may be lacking.