The synergistic role of sulfuric acid, ammonia and organics in particle formation over an agricultural land.

ABSTRACT: Agriculture provides people with food, but poses environmental challenges. Via comprehensive observations on an agricultural land at Qvidja in Southern Finland, we were able to show that soil-emitted compounds (mainly ammonia and amines), together with available sulfuric acid, form new aerosol particles which then grow to climate-relevant sizes by the condensation of extremely low volatile organic compounds originating from a side production of photosynthesis (compounds emitted by ground and surrounding vegetation). We found that intensive local clustering events, with particle formation rates at 3 nm about 5-10 times higher than typical rates in boreal forest environments, occur on around 30% of all days. The requirements for these clustering events to occur were found to be clear

SUBMITTER: Dada L 

PROVIDER: S-EPMC10413442 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature