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- Title
A Portable Nitrogen Dioxide Instrument Using Cavity-Enhanced Absorption Spectroscopy.
- Authors
Bailey, Steven A.; Hannun, Reem A.; Swanson, Andrew K.; Hanisco, Thomas F.
- Abstract
The Portable (2.7 kg) Cavity-enhanced Absorption of Nitrogen Dioxide (PCAND) instrument for measuring in situ nitrogen dioxide (NO2) was developed using incoherent, broadband cavity-enhanced absorption spectroscopy (IBBCEAS). An LED light source centered at 408 nm was coupled to a cavity 15 cm in length, achieving an effective optical pathlength of ~520 m. Our precision was measured as 94 pptv (1 s). To date, we have flown this instrument on 3 balloon and 1 UAV test flights. This instrument records data to an SD card and outputs data (via an RS232 port) to external devices including a commercial radiosonde (iMet) for real-time data downlink.
- Subjects
NITROGEN dioxide; ABSORPTION; LIGHT sources; SPECTROMETRY; FLIGHT testing; NITROGEN oxides; INSTRUMENT flying
- Publication
Atmospheric Measurement Techniques Discussions, 2024, p1
- ISSN
1867-8610
- Publication type
Article
- DOI
10.5194/amt-2024-61