A portable nitrogen dioxide instrument using cavity-enhanced absorption spectroscopy

Autor:	S. A. Bailey, R. A. Hannun, A. K. Swanson, T. F. Hanisco
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Environmental engineering TA170-171 Earthwork. Foundations TA715-787
Zdroj:	Atmospheric Measurement Techniques, Vol 17, Pp 5903-5910 (2024)
Druh dokumentu:	article
ISSN:	1867-1381 1867-8548
DOI:	10.5194/amt-17-5903-2024
Popis:	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. Precision was measured as 94 pptv (1 s). To date, we have flown this instrument on three balloon test flights. This instrument records data on an SD card and outputs data (via an RS232 port) to external devices including a commercial radiosonde (iMet) for real-time data downlink.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/d866f2bce8ec45fdac1eb886f157e62c Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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