16AEROSOL Database development of atmospheric ice-nucleating particle concentrations from ARM mega sites

This study aims to advance our understanding of ice-nucleating particles (INPs), which can modulate clouds, precipitation, and Earth’s radiative budget, by developing the database of INP abundance measured by the novel mobile ice nucleation chamber from three contrasting sites (i.e., terrestrial, marine, and high-latitude sites). A unique aspect of this study is the characterization of INPs at atmospherically relevant conditions simulated by adiabatic expansion cooling at the ground-level Atmospheric Radiation Measurement (ARM) observatories across the world (Southern Great Plains, North Slope of Alaska, and European Atlantic). To accomplish our goal, we will process the data recently collected by means of the mobile ice nucleation chamber from each location at least for the following period:

• Southern Great Plains: October 1 to November 15, 2019
• European Atlantic: October 1, 2020 to March 31, 2021
• North Slope of Alaska: October 1, 2021 to July 31, 2023

We plan to share the dataset and data processing codes as open access assets for public access. By analyzing the particle samples collected from each site, the resulting dataset will also include the data of single particle-based size and elemental composition, as well as meteorological and air mass trajectory data at the ground surface and aloft. By using this database, the research community can make advances in aerosol-cloud modeling and much more as the model may perform better with such comprehensive INP information.