STAR Visibility Data. Version 1.0 ...

• Main Authors: Hanesiak, J., Stewart, R., Moore, K., Taylor, P., Strapp, W., Wolde, M.
• Format: Dataset
• Language: English
• Published: UCAR/NCAR - Earth Observing Laboratory 2020
• Subjects: Iqaluit
• Online Access: https://dx.doi.org/10.26023/t3gs-v9t3-e40w; https://data.eol.ucar.edu/dataset/251.008

Two Sentry SVS-1 visibility sensors were installed at the Iqaluit Weather Office site. One instrument was an RS-232 Output version (Visibility 1), while the second was Analog version (Visibility 2) of the instrument. The instruments had measurement ranges of 30 m to 16 km with an accuracy of ± 10%. Both sensors were set to sample once every minute, and mounted at a height or 1.5 m. Visibility 1 (RS-232 output) was positioned on the east side of the Upper Air shed at the Weather Office during the fall field campaign. The data files were logged using an Acumen Data Logger, and stored on a compact flash card. Data files are in *.dat format where they contain date, time, sensor output voltage (VDC), visibility in (km). To derive the visibility from the VDC the following formula was used: σ km-1 = 20* (0.150/VDC). Visibility 2 (Analog output), was positioned with the 10-m tower automatic weather station (A3) and the Weather Office site. A Campbell Scientific CR23X data logger was used to log the data. Data files ...