Wind Rose

Vista Data Vision has 3 different Wind Roses to analyze Wind Direction Data: Basic Wind Rose, Vector Wind Rose and Filter Wind Rose.

Wind Rose is a clever way of analyzing data that is related to wind direction. Not only is Wind Rose perfect to plot the classical Wind Rose, e.g. wind speed against wind direction, but actually any sensor against wind direction. As an example, check where from the precipitation is coming, or air temperature or air humidity, or where from the ambient pollution is coming from, like Dust, NO, NOx, SO2, H2O etc.

How does it work?

1. On a page with Wind Direction, click on its graph to enlarge it.
2. On the top menu bar, choose any of the 3 Wind Rose options.
3. Choose filter variable, choose time period.
4. That's it! And its works both on the VDV web interface as on the db.data browser desktop software.

The Wind Rose diagram showing the wind distribution for a specific time period.

Advanced Wind Rose 1, Vector Wind Rose

Vector Wind Rose plot for Air Temperature.

The Vector Windrose allows you to view the distribution of a second Variable in connection to Wind Direction.

Customize presentation for different Units. Choose the limit for each segment as well as the color. Choose the number of Bins and labeling options.

Vector Wind Rose for Rain. Notice that 86% of the data is not shown since it is below 0.1 mm.

Vector Wind Rose for Dust in PM10 units (Environmental measurement).

Advanced Wind Rose 2, Filter Wind Rose
Filter Wind Rose is a powerful tool that allows you to determine a relationship between Wind Direction and a second measurement.

Wind Rose filtered with SO2. This Wind Rose shows the Wind Direction for a whole year when SO2 measures above 9.5 PPB. This shows you that the main source for SO2 lies to the South-East from the Monitoring Station. You can also see that SO2 measured above 9.5 PPB 0.5% of the time.

The same Wind Rose unfiltered.

Wind Rose showing Wind Direction when Wind Speed is greater than 8 m/s.

Wind Rose showing Wind Direction when Rain is above 0.5mm per 15 minutes. The Filter Wind Rose clearly shows that when it rains the wind is blowing from East-South-East.

Filter Wind Rose showing Wind Direction for a whole year when Air Temperature measured between -1°C and 1°C.