The De-Icing Comparison Experiment – ARM Contribution (DICEXACO)

The De-Icing Comparison Experiment (D-ICE) was a campaign carried out at in Utqiaġvik and Oliktok Point, Alaska, from August 2017 to July 2018. The purpose of D-ICE was to evaluate ventilation and heating technologies developed to mitigate radiometer icing. D-ICE consisted of 20 pyranometers and 5 pyrgeometers operating in various ventilator housings alongside operational stations run by the NOAA Global Monitoring Division (GMD) at NOAA’s Barrow Atmospheric Baseline Observatory. D-ICE also evaluated the the SKYRAD systems at the DoE-ARM North Slope of Alaska (NSA) and Oliktok Point (OLI, AMF3) observatories. In total, 34 systems were evaluated (8 of which were SKYRAD radiometers). All radiometers were monitored continuously using cameras, and a total of more than 1 million images of sensor domes were archived collectively between the stations. Data collected as part of D-ICE by NOAA can be found through the project web page, https://www.esrl.noaa.gov/psd/arctic/d-ice/. The DICEXACO component of DICE (https://www.arm.gov/research/campaigns/nsa2017dicexaco) are the images collected at 10 min intervals at both OLI and NSA and are the subject of this report. Two cameras were installed at each ARM station, one directed towards the SKYRAD tracker and the other towards the SKYRAD global PSP. 2019 OAR (Oceanic and Atmospheric Research) ESRL (Earth System Research Laboratory) CIRES (Cooperative Institute for Research in Environmental Sciences) Submitted Public Domain 1876