A Cavity-Enhanced UV Absorption Instrument for High Precision, Fast Time Response Ozone Measurements
| dc.contributor.author | Hannun, Reem A. | |
| dc.contributor.author | Swanson, Andrew K. | |
| dc.contributor.author | Bailey, Steven A. | |
| dc.contributor.author | Hanisco, Thomas F. | |
| dc.contributor.author | Bui, T. Paul | |
| dc.contributor.author | Bourgeois, Ilann | |
| dc.contributor.author | Peischl, Jeff | |
| dc.contributor.author | Ryerson, Thomas B. | |
| dc.date.accessioned | 2020-08-17T19:58:12Z | |
| dc.date.available | 2020-08-17T19:58:12Z | |
| dc.date.issued | 2020-07-22 | |
| dc.description.abstract | The NASA Rapid Ozone Experiment (ROZE) is a broadband cavity-enhanced UV absorption instrument for the detection of in situ ozone (O₃). ROZE uses an incoherent LED 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 (0.1 s) and 31 pptv (1 s), as well as a 1/e response time 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. | en_US |
| dc.description.sponsorship | This work was supported by the NASA Internal Research and Development (IRAD) program, the NASA Upper Atmosphere Research Program, and the NASA Tropospheric Chemistry Program. The aircraft flight opportunity was provided by the NASA/NOAA FIREX-AQ project and the NASA Student Airborne Research Program (SARP). We would like to acknowledge the DLH instrument team (Glenn Diskin, et al.) for the water vapor measurements used in the eddy covariance analysis. We would additionally like to thank Jason St. Clair and Glenn Wolfe for helpful comments on the manuscript. | en_US |
| dc.description.uri | https://amt.copernicus.org/preprints/amt-2020-195/ | en_US |
| dc.format.extent | 20 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2m05n-ckp5 | |
| dc.identifier.citation | Hannun, Reem A.; Swanson, Andrew K.; Bailey, Steven A.; Hanisco, Thomas F.; Bui, T. Paul; Bourgeois, Ilann; Peischl, Jeff; Ryerson, Thomas B.; A Cavity-Enhanced UV Absorption Instrument for High Precision, Fast Time Response Ozone Measurements; Atmospheric Measurement Techniques (2020); https://amt.copernicus.org/preprints/amt-2020-195/ | en_US |
| dc.identifier.uri | https://doi.org/10.5194/amt-2020-195 | |
| dc.identifier.uri | http://hdl.handle.net/11603/19451 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | EGU Publications | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Attribution 4.0 International (CC BY 4.0) | * |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
| dc.title | A Cavity-Enhanced UV Absorption Instrument for High Precision, Fast Time Response Ozone Measurements | en_US |
| dc.type | Text | en_US |