To support the overall AEROMMA science objectives related to urban emissions as affected by coastal meteorology, the NOAA Twin Otter aircraft will deploy to the New York City region for the Coastal Urban Plume Dynamics Study (CUPiDS) in the summer of 2023.
An airborne scanning Doppler lidar operated from a NOAA Twin Otter aircraft will measure the vertical and horizontal structure of the evolving horizontal-wind field along its flight track over the shoreline of Lake Michigan, then the U.S. East coast to characterize the flows that carry plumes of air pollutants emitted from Chicago, New York City (NYC) and other major areas along the urban corridor (Baltimore/Washington, Philadelphia, Boston). Data from the NOAA Twin Otter lidar will be used to study diurnal forcing of atmospheric dynamics on urban plume transport and mixing in coastal regions. Atmospheric effects such as the urban heat island and complex regional flows driven by sea/land breezes have a strong diurnal signature. They impact the depth to which urban emissions can mix in the boundary layer, and control the coherence and direction of low-level transport in coastal regions. If these processes are not properly represented in regional air quality models, the models will not accurately predict air quality in the region.
Important science questions include: