Year = 1998
Month = November
Day = 25
Day-of-year = 329
Site = Poker Flat
Sunrise = 19:04
Sunset = 00:08
Moonrise = 23:17
Moonset = 05:50
Moon_age = 5
Aurora = Active - One or more breakups occurred
Cloud = Clear all night
Magnetometer = Disturbed
ASC = Long moondown, ran OK
MSP = Ran all night on all channels
VHF_radar = Partial data coverage
Electrojet = Good data coverage from real-time calculations (typically 5 minute intervals)
SDI = Ran all night, good data
Bomem = Unknown
MSG = No data
Trailer = Unknown
UW_FPI = Unknown
CRL_NF_FPI = Unknown
CRL_AS_FPI = Unknown
Stratosperic_lidar = Unknown
Rayleigh_lidar = Unknown
Resonance_lidar = Unknown
Ebert = No data
Comments = Basically clear all night, though ASC shows some periods of thin cloud. SDI data look great, apart from the first 2 hours (approx 0330 to 0530 UT). I suspected that this was probably due to moonlight scattering off thin cloud. However, examining the spectra does not support this. Rather, the data in the first two hours look fine, and should be believed. Well developed westerly flow late in the evening. Electroject was only calculated from 3 stations for most of the night.
MC 25-Nov-1998.