An arm extending due south from the lower part of the mast contains two down-looking pyranometers measuring reflected radiation from the snow surface, one full-range (Kipp & Zonen CM21, 305-2800 nm (50% points)) and one filtered (Kipp & Zonen™ CM21 with RG695 filter dome, 780-2800 nm (50% points)).

Also deployed on this arm are an air temperature and humidity sensor (Campbell Scientific™ CS500), ultrasonic snow depth sensor (Campbell Scientific™ SR50) and an infra-red snow surface temperature sensor (AlpuG GmbH™ SnowSurf)..

A second arm low on the mast houses a second wind monitor (RM Young™ Model 05103-5).Also located low on the mast (not seen in photograph) are the system's Campbell Scientific™ CR10x datalogger and AM16/32 multiplexer enclosures. The datalogger enclosure also houses a barometer (Vaisala™ PTB101B)