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.
ozone
Posted inEditors' Vox
An Air Parcel’s Journey Through the Stratosphere
The “age of stratospheric air” measures the speed of the global transport circulation in the stratosphere, which is crucial for understanding the distribution of important trace gases, like ozone.
Posted inResearch Spotlights
Higher Ozone Levels Tied to Heart Attack Risk
For young adults, air pollution may increase risks of some kinds of heart attacks more than others.
Posted inEditors' Vox
Particulate Pollution and its Climate Impacts During the COVID-19 Pandemic
The impacts of COVID-19 on short-lived pollutants highlight the predominant influence of the transportation sector and the resulting changes in regional climates and ecosystems.
Posted inEditors' Highlights
Need for Better Accounting of CFC-12 Emissions from China
New observations show that bottom-up tracking of CFC-12 emissions from China are underestimated, illustrating the need for better accounting for reductions from the Montreal Protocol.
Posted inResearch Spotlights
What Happens in the Troposphere Doesn’t Stay in the Troposphere
A new study suggests that spillover of tropospheric ozone is affecting measurements of stratospheric ozone recovery more than previously realized.
Posted inEditors' Highlights
A Fast and Accurate Open-Source Atmospheric Transport Model
A new zonally-averaged atmospheric transport model will be useful for estimating emissions of ozone-depleting substances and greenhouse gases.
Posted inResearch Spotlights
Uncertainty Abounds in Seeding the Sky to Fight Climate Change
Some scientists have suggested injecting solid particles such as alumina, calcite, or even diamonds into the atmosphere to temporarily limit climate warming. But new research shows there are still big unknowns.
Posted inResearch Spotlights
Certaines plantes laissent une empreinte digitale chimique sur un gaz qui appauvrit la couche d’ozone
Une nouvelle étude, la première dans son genre, suggère qu’il serait possible de recourir à une analyse isotopique pour localiser les sources et les puits de chlorométhane dans l’atmosphère.
