This project aims to investigate how airborne particles (aerosols) influence the rapidly changing Arctic, by constraining properties that involve their direct influence on the Arctic energy budget, their effect on the formation of clouds, and the alteration of the Arctic nutrient budgets that affect biogenic aerosol sources.
Specifically, we will carry out measurements to determine :
- the ability of Arctic aerosol to absorb solar radiation and heat the atmosphere and surface ;
- the source processes of local emissions that contribute to atmospheric aerosol levels, and
- the diversity and sources of airborne microorganisms to estimate their potential role in modulating clouds.
Analysis of the data collected will then help develop relationships of climate-relevant properties of Arctic aerosol for use in attribution and impact assessment studies.