July 11, 2007
Low pressure with thunderstroms
The low pressure was around us and we got several thunderstorms here on July 10th. ELF has been run around 30 hours from yesterday till today. The aerosol optical depth is around 1 from AERONET, MD science center. The hourly PM 2.5 concentrations in the range of 10.6 to 43.4 ug/m3 were recorded at Maryland's Department of the Environment Oldtown site in Baltimore during ELF's operation.
