A cavity-enhanced ultraviolet absorption instrument for high-precision, fast-time-response ozone measurements

Hannun, Reem A.; Swanson, Andrew K.; Bailey, Steven A.; Hanisco, Thomas F.; Bui, T. Paul; Bourgeois, Ilann; Peischl, Jeff; Ryerson, Thomas B.

doi:10.5194/amt-13-6877-2020

i

A cavity-enhanced ultraviolet absorption instrument for high-precision, fast-time-response ozone measurements

Supporting Files

2020
By Hannun, Reem A. ; Swanson, Andrew K. ; Bailey, Steven A. ; ...

Details

Journal Title:

Atmospheric Measurement Techniques
Personal Author:

Hannun, Reem A. ; Swanson, Andrew K. ; Bailey, Steven A. ; Hanisco, Thomas F. ; Bui, T. Paul ; Bourgeois, Ilann ; Peischl, Jeff ; Ryerson, Thomas B.
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CSL (Chemical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

The NASA Rapid Ozone Experiment (ROZE) is a broadband cavity-enhanced UV (ultraviolet) absorption instrument for the detection of in situ ozone (O3). ROZE uses an incoherent LED (light-emitting diode) light source coupled to a high-finesse optical cavity to achieve an effective pathlength of ∼ 104 m. Due to its high sensitivity and small optical cell volume, ROZE demonstrates a 1σ precision of 80 pptv (parts per trillion by volume) in 0.1 s and 31 pptv in a 1 s integration time, as well as an e-fold time response of 50 ms. ROZE can be operated in a range of field environments, including low- and high-altitude research aircraft, and is particularly suited to O3 vertical-flux measurements using the eddy covariance technique. ROZE was successfully integrated aboard the NASA DC-8 aircraft during July–September 2019 and validated against a well-established chemiluminescence measurement of O3. A flight within the marine boundary layer also demonstrated flux measurement capabilities, and we observed a mean O3 deposition velocity of 0.029 ± 0.005 cm s−1 to the ocean surface. The performance characteristics detailed below make ROZE a robust, versatile instrument for field measurements of O3.
Keywords:

Measurements Ozone Ultraviolet Light Ultraviolet Light
Source:

Atmos. Meas. Tech., 13, 6877–6887, 2020
DOI:

https://doi.org/10.5194/amt-13-6877-2020
Document Type:

Journal Article
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha256:aa21f1da11f79666c407d7f7b149884d534940c0389d5053f2c28621dd1ad3e6
Download URL:

https://repository.library.noaa.gov/view/noaa/29379/noaa_29379_DS1.pdf
File Type:

[PDF - 2.43 MB ]

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