TAS Sensor Web: Vaisala WMS302 wind sensor

Brief description

The Vaisala WMS302 sensor collects wind data. Full details can be found in the instrument specification available from Vaisala. The WMS302 is a combined wind sensor with two wiper potentiometers. The Anemometer has a measuring range of 0.5 … 60 m/s and an accuracy of ±0.3 m/s (≤ 10 m/s). The data collected by these instruments is transmitted by Campbell loggers over the 3G mobile network, to a Hydro Tasmania FTP server. The logger is powered by solar panels and a rechargeable battery. The logger is scanning every three seconds and the Averages, Maximums and Minimums and Totalized values are for the log interval which is ten minutes (ie. 600s / 3s = 200 readings in 10 minutes). Windrun, windvarianceindex are calculated within the logger and based on the ten minute log interval. Windspeed_ms, WindDirection and Dir_Std are also calculated by the logger using the 10 minutes of data and processed by the WindVector command of the program – details as follows: “Mean horizontal wind speed (WVc(1)), unit vector mean wind direction (WVc(2)), and standard deviation of wind direction (WVc(3)). Standard deviation is calculated using the Yamartino algorithm. This option complies with EPA guidelines for use with straight-line Gaussian dispersion models to model plume transport.” The data is subsequently retrieved from Hydro Tasmania via FTP and stored in a Postgres PostGIS database where it is made publicly available using a Sensor Observation Service that was created by 52 Degrees North. Recalibration of the instruments is carried out once a year by Hydro Tasmania personnel. Currently there is no automated Quality Assurance/Quality Correction process in place.

Delivery method

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