Visibility
Measurement Categories: Atmospheric State
Description: (1) The greatest distance in a given direction at which it is just possible to see and identify with the unaided eye, and (a) in the daytime, a prominent dark object against the sky at the horizon, and (b) at night, a known, preferably unfocused moderatel
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Instruments that produce the measurement
The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes.
- ARM Instruments
- External Instruments
- Field Campaign Instruments
Datastreams including the measurement
- (METTWR) Surface and Tower Meteorological Instrumentation at NSA Datastreams
- (MOLTS) Model Output Location Time Series Datastreams
- moltsedassfcclass1 - Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhanced surface, params, stations
- (NWSSURF) National Weather Service Surface Meteorology Data Datastreams
- 60nwssurf - National Weather Service (NWS) surface meteorology data: 60-minute averages
- (RUC) Rapid Update Cycle Model Data Datastreams
- allruc20isob - Rapid Update Cycle (RUC) model: isobaric main analysis data, 20-km resolution
- allruc40isob - Rapid Update Cycle (RUC) model: isobaric main analysis data, 40-km resolution
- ruc20isob - Rapid Update Cycle (RUC) model: daily isobaric analysis data, 20 km resolution
- synruc20isob - Rapid Update Cycle (RUC) model: isobaric output, 20 km grid, averaged to 40 km
- (VCEIL) Vaisala Ceilometer Datastreams
- vceil25k - Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range
