Cloud formation driven by isoprene-derived oxygenated organic molecules
Isoprene (C5H8) is one of the most emitted biogenic organic compounds by vegetation, particularly from broadleaf trees in tropical rainforests. It plays a significant role in atmospheric chemistry and, consequently, in the global radiation balance. This has been further confirmed by two recently published Nature papers, which demonstrate the importance of isoprene in the formation of atmospheric particles. Both studies, one conducted over the Amazon rainforest and the other in the CLOUD chamber at CERN, highlight the importance of isoprene in cloud formation and, subsequently, in the Earth's radiation balance.
The role of the Amazon rainforest in the world’s climate
Researchers conducted a large-scale aircraft campaign to study the upper troposphere over the Amazon rainforest and tropical oceans. They observed high concentrations of newly formed particles in these regions. These particles arise from the interaction of biogenic emissions, such as isoprene, with atmospheric processes. These processes include lightning-generated nitrogen oxides (NOx), oxidation photochemistry, and deep tropical convection at low temperatures.
The IONICON PTR-TOF (redesigned for flight campaigns) was used among other high-end instruments to measure the origin, oxidation, and impact of these convected air masses containing isoprene. You can find the article here.
CLOUD project research under upper-tropospheric conditions
As a proud partner of the CLOUD project (Cosmics Leaving Outdoor Droplets), we are truly fascinated by the remarkable results from recent measurement campaigns at the CLOUD chamber. The results demonstrate how isoprene-derived oxygenated organic molecules (IP-OOMs) drive new particle formation (NPF) under these extreme conditions. The resulting Nature article highlights the synergy between laboratory and fieldwork, providing a deeper understanding of how biogenic emissions and atmospheric processes contribute to climate-relevant aerosols. Read the full article here.
Celebrating collaborative achievements in atmospheric research and beyond
We congratulate the CLOUD community and the CAFE-Brasil Team, particularly the authors of these Nature papers for their exceptional achievements.
IONICON is looking forward to further studies in this field and will support researchers with exceptional measurement data and innovative insights. Together, we will continue uncovering the fascinating connections between biology, chemistry, and climate.
