Understanding the source of dust on your site can be a complex challenge, with local weather conditions often causing dust to be blown on and off site, impacting local stakeholders and communities. To make it easier to understand where dust is coming from, SiteHive now shows indicative dust direction of arrival (DoA).
Taking inspiration from a traditional pollution rose, the SiteHive dust DoA plot shows the percentage of dust that has come from each direction, for the day so far.
The percentages are calculated based on PM2.5/PM10 readings and the wind direction at the time of the reading. So for instance, if a PM10 mass of 180 is measured with a corresponding wind direction of North, and 20 is measured with wind blowing South, then 90% of the PM10 will be shown as coming from the North, and 10% from the South.
This mode can be activated at the top left of the Dashboard map when any SiteHive Hexanode is selected:
Like other graphs in SiteHive, the PM10 is shown as green and the PM2.5 as blue.
The DoA plot is meant to be indicative, rather than definitive, and is designed to help you understand where dust may be originating. Having an anemometer (a device that measures wind) co-located with the SiteHive Hexanode will give the most accurate input to this plot. The source of the wind data is currently Openweathermap, but we'll look to broaden this out to include alternative soruces soon.