Machine Learning towards a Global Parameterisationof Atmospheric New Particle Formation and Growth


New particle formation (NPF) and growth in the atmosphere affects climate,weather, air quality, and human health. It is the first step of the complex process leading to cloud condensation nuclei (CCN) formation. Even though there is a wealth of observations from field measurements (in forests, high-altitude, polar regions, coastal and urban sites, aircraft campaigns), as well as laboratory studies of multi-component nucleation (including the CLOUD chamber at CERN), and improved nucleation theories, the NPF parameterisations in regional and global models are lacking. These deficiencies make the impacts of aerosols one of the highest sources of uncertainty in global climate change modelling, and associated impacts on weather and human health. We propose to use Machine Learning methods to overcome the challenges in modelling aerosol nucleation and growth,by ingesting the data from the multitude of available sources to create a single parameterisation applicable throughout the modelled atmosphere (troposphere and stratosphere at all latitudes) that efficiently encompasses all input ambient conditions and concentrations of relevant species.

NeurIPS 2020 Workshop: Tackling Climate Change with Machine Learning