Deployment of the DOE 3rd ARM Mobile Facility (AMF3) to the Southeastern United States: A Vision for Integrated Model-Observing System Design for Targeting Land-Aerosol-Cloud Interactions

CHONGAI KUANG, Shawn Serbin, Scott Giangrande, Brookhaven National Laboratory

     Abstract Number: 433
     Working Group: Aerosol-Ecosystem Interactions

Abstract
The DOE ARM user facility has relocated the third ARM Mobile Facility (AMF3) to the Southeast United States for a five-year deployment starting in the Fall of 2023, with siting focused on the Bankhead National Forest in Northern Alabama. The Southeast United States is a region characterized by: high vegetative emissions of volatile organic compounds; a wide range in anthropogenic emissions from proximity to rural areas and dense urban cores; biomass burning from periodic prescribed and unplanned burning; and large amounts of secondary organic aerosol. This AMF3 deployment is a unique opportunity to improve understanding and model representation of coupled aerosol, cloud, and land-surface processes in an environment where such processes are strongly driven by local forcings. A defining aspect of this AMF3 deployment is an expectation for long-term (5 year) observations to account for seasonal to annual variability. Understanding the role of spatiotemporal variability (e.g., atmospheric thermodynamic variability, variation in land-surface properties and seasonality) across aspects of the climate system is a key motivator for AMF3 studies. This is especially true for characterizing the relationships between aerosol and land-surface processes over a diverse patchwork of natural, managed, and urban landscapes found across the region. The AMF3 site science team will present updates on facility siting, configuration, instrumentation, and sampling strategies in support of the coupled aerosol, cloud, and land-atmosphere interactions science drivers.