Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City
We here present the results from mobile measurements using two ground-based zenith viewing Differential Optical Absorption Spectroscopy (DOAS) instruments. The measurement was performed in a cross-section of the plume from the Mexico City Metropolitan Area (MCMA) on 10 March 2006 as part of the...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
European Geosciences Union / Copernicus
2011
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| Online Access: | http://hdl.handle.net/1721.1/65361 https://orcid.org/0000-0002-3596-5334 |
| _version_ | 1826209458834898944 |
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| author | Johansson, M. Rivera, C. de Foy, B. Lei, Wenfang Song, J. Zhang, Y. Galle, B. Molina, Luisa Tan |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Johansson, M. Rivera, C. de Foy, B. Lei, Wenfang Song, J. Zhang, Y. Galle, B. Molina, Luisa Tan |
| author_sort | Johansson, M. |
| collection | MIT |
| description | We here present the results from mobile measurements
using two ground-based zenith viewing Differential
Optical Absorption Spectroscopy (DOAS) instruments. The
measurement was performed in a cross-section of the plume
from the Mexico City Metropolitan Area (MCMA) on 10
March 2006 as part of the MILAGRO field campaign. The
two instruments operated in the UV and the visible wavelength
region respectively and have been used to derive the
differential vertical columns of HCHO and NO2 [NO subscript 2] above the
measurement route. This is the first time the mobile mini-
DOAS instrument has been able to measure HCHO, one of
the chemically most important and interesting gases in the
polluted urban atmosphere.
Using a mass-averaged wind speed and wind direction
from the WRF model the instantaneous flux of HCHO and
NO2 [NO subscript 2] has been calculated from the measurements and the results
are compared to the CAMx chemical model. The calculated
flux through the measured cross-section was 1.9 (1.5–
2.2) kg/s of HCHO and 4.4 (4.0–5.0) kg/s of NO2 [NO subscript 2] using the
UV instrument and 3.66 (3.63–3.73) kg/s of NO2 [NO subscript 2] using the
visible light instrument. The modeled values from CAMx
for the outflow of both NO2 [NO subscript 2] and HCHO, 1.1 and 3.6 kg/s,
respectively, show a reasonable agreement with the measurement
derived fluxes. |
| first_indexed | 2024-09-23T14:22:50Z |
| format | Article |
| id | mit-1721.1/65361 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:22:50Z |
| publishDate | 2011 |
| publisher | European Geosciences Union / Copernicus |
| record_format | dspace |
| spelling | mit-1721.1/653612022-10-01T20:56:51Z Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City Johansson, M. Rivera, C. de Foy, B. Lei, Wenfang Song, J. Zhang, Y. Galle, B. Molina, Luisa Tan Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Molina, Luisa Tan Lei, Wenfang Song, J. Molina, Luisa Tan We here present the results from mobile measurements using two ground-based zenith viewing Differential Optical Absorption Spectroscopy (DOAS) instruments. The measurement was performed in a cross-section of the plume from the Mexico City Metropolitan Area (MCMA) on 10 March 2006 as part of the MILAGRO field campaign. The two instruments operated in the UV and the visible wavelength region respectively and have been used to derive the differential vertical columns of HCHO and NO2 [NO subscript 2] above the measurement route. This is the first time the mobile mini- DOAS instrument has been able to measure HCHO, one of the chemically most important and interesting gases in the polluted urban atmosphere. Using a mass-averaged wind speed and wind direction from the WRF model the instantaneous flux of HCHO and NO2 [NO subscript 2] has been calculated from the measurements and the results are compared to the CAMx chemical model. The calculated flux through the measured cross-section was 1.9 (1.5– 2.2) kg/s of HCHO and 4.4 (4.0–5.0) kg/s of NO2 [NO subscript 2] using the UV instrument and 3.66 (3.63–3.73) kg/s of NO2 [NO subscript 2] using the visible light instrument. The modeled values from CAMx for the outflow of both NO2 [NO subscript 2] and HCHO, 1.1 and 3.6 kg/s, respectively, show a reasonable agreement with the measurement derived fluxes. National Science Foundation (U.S.) (Grant no. ATM-0528227) National Science Foundation (U.S.) (Grant no. ATM-0511803) Swedish International Development Cooperation Agency 2011-08-25T18:30:17Z 2011-08-25T18:30:17Z 2009-08 2009-04 Article http://purl.org/eprint/type/JournalArticle 1680-7324 1680-7316 http://hdl.handle.net/1721.1/65361 Johansson, M. et al. “Mobile mini-DOAS Measurement of the Outflow of NO2 and HCHO from Mexico City.” Atmospheric Chemistry and Physics 9.15 (2009) : 5647-5653. © Author(s) 2009 https://orcid.org/0000-0002-3596-5334 en_US http://dx.doi.org/10.5194/acp-9-5647-2009 Atmospheric Chemistry and Physics Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0 application/pdf European Geosciences Union / Copernicus Copernicus |
| spellingShingle | Johansson, M. Rivera, C. de Foy, B. Lei, Wenfang Song, J. Zhang, Y. Galle, B. Molina, Luisa Tan Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title | Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title_full | Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title_fullStr | Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title_full_unstemmed | Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title_short | Mobile mini-DOAS measurement of the outflow of NO2 [NO subscript 2] and HCHO from Mexico City |
| title_sort | mobile mini doas measurement of the outflow of no2 no subscript 2 and hcho from mexico city |
| url | http://hdl.handle.net/1721.1/65361 https://orcid.org/0000-0002-3596-5334 |
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