U.S. Air Quality

ELF Cools Down: Clear Skies

Clear skies prevailed today over Baltimore, with an ocasional cloud advecting over ELF (not shown here). Boundary layer rose from 1 to 2 km during the first two hours of observations. Good PM2.5 concentrations were recorded at Maryland's Department of the Environment Oldtown monitoring station during ELF's operation. The extinction colorbar was reduced from 0.5 to 0.2 in order to show today's observations (in other words less particles to scatter off).