August 13, 2007
CALIPSO overpass
It is very clear today after the light rain we received last night and today's cold front passing. There are some high clouds around 9km in the morning. Then there are some scattered low clouds at the top of the boundary layer in the afternoon. The boundary layer extends to ~2km, with aerosol optical depth at ~0.3 from AERONET site, GSFC. The hourly PM 2.5 concentrations in the range of 11.4 to 19.4 ug/m3 are recorded at Maryland's Department of the Environment Oldtown site in Baltimore during ELF's operation. There was CALIPSO overpass 60Km away from UMBC at 18:21(UTC) from NASA CALIPSO Predicted Track
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