Cyanometer vs RoadMaster

The original cyanometer was invented by the Genevan physicist and Alpine explorer Horace-Bénédict de Saussure (* 17 February 1740 in Conches; † 22 January 1799) in 1789. It is an instrument for measuring 'blueness', specifically the colour intensity of blue sky. With the measurement it is possible to draw conclusions from the constitution of the atmosphere: the bluer the sky the less the water vapor. Saussures cyanometer consisted out of 53 parts of a circular ring ranging from white over different grades of blue to black (Saussure used Prussian blue). Saussure used his cyanometer for measurements in Geneva, Chamonix und on the Mont Blanc. Alexander von Humboldt used a cyanometer on his expedition to America (1799 - 1804). You can use our Cyanometer in three modes: The modern scale uses distinct grades of blue starting with clear white up to black. The Saussure scale shall give an idea about the colors from Saussures original cyanometer. With the user defined scale own scans of blue skies can be added to an own colored circular ring - an own cyanometer. Each scan is saved inside the app containing information about date, time and locality. So it is possible to compare scans of blue skies from different locations. Privacy notice: No data will be saved or processed outside the app.

RoadMaster is a professional service available to DTN’s customers only. DTN offers the world's most comprehensive range of dedicated forecast solutions for winter maintenance operations. RoadMaster has been developed specifically to support field-based operations for winter maintenance. With detailed road weather forecasts produced 24/7/365, all those involved in winter operations now have access to real-time decisions support data on the go. The RoadMaster dashboard provides alerts when slippery conditions are forecast or when the amount of snow or maximum wind gusts are forecast to exceed a pre-determined threshold in the next 24 hours. The dashboard also displays more detailed information such as minimum road surface temperatures and the road conditions for local Road Weather Information Systems and domains. Hourly road weather forecasts are presented in easy to use color-coded tables and graphs. RoadMaster also includes DTN’s unique real-time and forecasted precipitation type (rain, rain/snow, snow, freezing rain, and hail) radar and real-time animated satellite images.