October 29, 2007
Clear day
It was very clear today, since it had been raining a lot in the last week. The hourly PM 2.5 concentrations in the range of 4.1 to 20.9 ug/m3 were recorded at the Oldtown site during ELF’s operation. The aerosol optical depth was ~0.08 from the AERONET site, MD Science Center. There were some very thin aloft layers at ~2.5km, which might be smoke from the north west of UMBC from HYSPLIT.
