The potential role of organics in new particle formation and initial growth in the remote tropical upper troposphere
作者： Agnieszka Kupc , Christina J. Williamson , Anna L. Hodshire , Jan Kazil , Eric Ray
DOI: 10.5194/ACP-20-15037-2020
关键词:
摘要: Abstract. Global observations and model studies indicate that new particle formation (NPF) in the upper troposphere (UT) subsequent particles supply 40–60 % of cloud condensation nuclei (CCN) lower troposphere, thus affecting Earth's radiative budget. There are several plausible nucleation mechanisms precursor species this atmospheric region, which, absence observational constraints, lead to uncertainties modeled aerosols. In particular, type mechanism concentrations precursors, part, determine spatial distribution resulting CCN from source. Although substantial advances understanding NPF have been made recent years, processes UT pristine marine regions still poorly understood inadequately represented global models. Here, we evaluate commonly used state-of-the-art schemes a Lagrangian box assess which best reproduce detailed situ observations. Using measurements aerosol size distributions (0.003
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