When Air Resource Specialists, Inc. needed a datalogger to withstand the remote extremes of our U.S. national parks and wilderness areas, they came to Campbell Scientific. The Clean Air Act of 1977 initiated a goal to protect visibility in 156 national parks and wilderness areas. From scorching Arizona summers to icy northern Montana winters, our dataloggers have played a key role in monitoring the atmosphere's ability to scatter and absorb light. There are currently over 20 monitoring sites.

Case Study Summary


Dataloggers and nephelometers combine to monitor scenic vistas at US parks


Various national parks, USA


David L Dietrich, Air Resource Specialists

Participating Organisations

US Park Service, Air Resource Specialists

Measured Parameters

Air temperature, relative humidity, visibility (nephelometer)