UTLS

The CONvective TRansport of Active Species in the Tropics (CONTRAST) Experiment

UTLS, convective transport in the tropics

ACD scientists in collaboration with colleagues from seven universities successfully sampled atmospheric composition over the Western Pacific warm pool region during the season characterized by massive convective storms.  The CONvective TRansport of Active Species in the Tropics (CONTRAST) experiment successfully concluded its field phase during January-February 2014. 

Progress in Understanding Climate-Relevant Processes in the Upper Troposphere and Lower Stratosphere

Schematic snapshot of the extratropical UTLS.

The extratropical upper troposphere and lower stratosphere (Ex‐UTLS) is a transition region between the stratosphere and the troposphere. In this region, dynamics, chemistry, clouds and radiation are strongly coupled, which makes this region important for chemistry-climate interactions. Significant progress has been made in understanding the climate-relevant processes in this region during the last decade, assisted by a suite of new observational studies.

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ACOM | Atmospheric Chemistry Observations & Modeling