U.S. Air Quality

Homogeneous Boundary Layer and Smoke

Overnight ELF operations were carried out to support Maryland Department of the Environment Low Level Jet (LLJ) studies. No conclusive signs of LLJ activity were observed last night, as it was for the night of June 13th. A homogeneous boundary layer, that extended up to ~2.5 km and aerosol stratification were observed throughout today's lidar timeseries. Backtrajectories for the airmass associated with the plumes aloft between 4-6 km came from Canada (right image), according to NOAA HYSPLIT calculations. These plumes could be part of the influx of Canadian smoke to the US that was covered by Nikisa in her post.