Today ELF shows a partially cloud capped boundary layer between 1 and 1.5 km with some aerosols above the PBL that did not mix in. Around 21:00z there was an interesting structure; a thick 1 km residual layer over a well defined 1 km boundary layer. In the evening there was also some aerosols advecting over UMBC at 3.5 km. This image is uncalibrated as the system was adjusted today.