Articles | Volume 15, issue 22
https://doi.org/10.5194/amt-15-6643-2022
https://doi.org/10.5194/amt-15-6643-2022
Research article
 | 
18 Nov 2022
Research article |  | 18 Nov 2022

A lightweight broadband cavity-enhanced spectrometer for NO2 measurement on uncrewed aerial vehicles

Caroline C. Womack, Steven S. Brown, Steven J. Ciciora, Ru-Shan Gao, Richard J. McLaughlin, Michael A. Robinson, Yinon Rudich, and Rebecca A. Washenfelder

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Short summary
We present a new miniature instrument to measure nitrogen dioxide (NO2) using cavity-enhanced spectroscopy. NO2 contributes to the formation of pollutants such as ozone and particulate matter, and its concentration can vary widely near sources. We developed this lightweight (3.05 kg) low-power (<35 W) instrument to measure NO2 on uncrewed aircraft vehicles (UAVs) and demonstrate that it has the accuracy and precision needed for atmospheric field measurements.