Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions
<p>Ozone is a key constituent of the troposphere, where it drives photochemical processes, impacts air quality, and acts as a climate forcer. Large-scale in situ observations of ozone commensurate with the grid resolution of current Earth system models are necessary to validate model outputs a...
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Copernicus Publications
2020-09-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/20/10611/2020/acp-20-10611-2020.pdf |
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| author | I. Bourgeois I. Bourgeois J. Peischl J. Peischl C. R. Thompson C. R. Thompson K. C. Aikin K. C. Aikin T. Campos H. Clark R. Commane B. Daube G. W. Diskin J. W. Elkins R.-S. Gao A. Gaudel A. Gaudel E. J. Hintsa E. J. Hintsa B. J. Johnson R. Kivi K. McKain K. McKain F. L. Moore F. L. Moore D. D. Parrish D. D. Parrish R. Querel E. Ray E. Ray R. Sánchez C. Sweeney D. W. Tarasick A. M. Thompson V. Thouret J. C. Witte S. C. Wofsy T. B. Ryerson |
| author_facet | I. Bourgeois I. Bourgeois J. Peischl J. Peischl C. R. Thompson C. R. Thompson K. C. Aikin K. C. Aikin T. Campos H. Clark R. Commane B. Daube G. W. Diskin J. W. Elkins R.-S. Gao A. Gaudel A. Gaudel E. J. Hintsa E. J. Hintsa B. J. Johnson R. Kivi K. McKain K. McKain F. L. Moore F. L. Moore D. D. Parrish D. D. Parrish R. Querel E. Ray E. Ray R. Sánchez C. Sweeney D. W. Tarasick A. M. Thompson V. Thouret J. C. Witte S. C. Wofsy T. B. Ryerson |
| author_sort | I. Bourgeois |
| collection | DOAJ |
| description | <p>Ozone is a key constituent of the troposphere, where it drives photochemical
processes, impacts air quality, and acts as a climate forcer. Large-scale in situ observations of ozone commensurate with the grid resolution of current
Earth system models are necessary to validate model outputs and satellite
retrievals. In this paper, we examine measurements from the Atmospheric
Tomography (ATom; four deployments in 2016–2018) and the HIAPER Pole-to-Pole
Observations (HIPPO; five deployments in 2009–2011) experiments, two
global-scale airborne campaigns covering the Pacific and Atlantic basins.</p>
<p>ATom and HIPPO represent the first global-scale, vertically resolved
measurements of <span class="inline-formula">O<sub>3</sub></span> distributions throughout the troposphere, with HIPPO
sampling the atmosphere over the Pacific and ATom sampling both the Pacific
and Atlantic. Given the relatively limited temporal resolution of these two
campaigns, we first compare ATom and HIPPO ozone data to longer-term
observational records to establish the representativeness of our dataset. We
show that these two airborne campaigns captured on average 53 %, 54 %, and 38 % of the ozone variability in the marine boundary layer, free
troposphere, and upper troposphere–lower stratosphere (UTLS), respectively,
at nine well-established ozonesonde sites. Additionally, ATom captured the
most frequent ozone concentrations measured by regular commercial aircraft
flights in the northern Atlantic UTLS. We then use the repeated<span id="page10612"/> vertical
profiles from these two campaigns to confirm and extend the existing
knowledge of tropospheric ozone spatial and
vertical distributions throughout the remote troposphere. We highlight a
clear hemispheric gradient, with greater ozone in the Northern Hemisphere,
consistent with greater precursor emissions and consistent with previous
modeling and satellite studies. We also show that the ozone distribution
below 8 km was similar in the extra-tropics of the Atlantic and Pacific
basins, likely due to zonal circulation patterns. However, twice as much
ozone was found in the tropical Atlantic as in the tropical Pacific, due
to well-documented dynamical patterns transporting continental air masses
over the Atlantic. Finally, we show that the seasonal variability of
tropospheric ozone over the Pacific and the Atlantic basins is driven
year-round by transported continental plumes and photochemistry, and the
vertical distribution is driven by photochemistry and mixing with
stratospheric air. This new dataset provides additional constraints for
global climate and chemistry models to improve our understanding of both
ozone production and loss processes in remote regions, as well as the
influence of anthropogenic emissions on baseline ozone.</p> |
| first_indexed | 2024-12-16T06:12:54Z |
| format | Article |
| id | doaj.art-e8cdef94390d4ddfa0947f719bf68eb6 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-16T06:12:54Z |
| publishDate | 2020-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-e8cdef94390d4ddfa0947f719bf68eb62022-12-21T22:41:20ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242020-09-0120106111063510.5194/acp-20-10611-2020Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missionsI. Bourgeois0I. Bourgeois1J. Peischl2J. Peischl3C. R. Thompson4C. R. Thompson5K. C. Aikin6K. C. Aikin7T. Campos8H. Clark9R. Commane10B. Daube11G. W. Diskin12J. W. Elkins13R.-S. Gao14A. Gaudel15A. Gaudel16E. J. Hintsa17E. J. Hintsa18B. J. Johnson19R. Kivi20K. McKain21K. McKain22F. L. Moore23F. L. Moore24D. D. Parrish25D. D. Parrish26R. Querel27E. Ray28E. Ray29R. Sánchez30C. Sweeney31D. W. Tarasick32A. M. Thompson33V. Thouret34J. C. Witte35S. C. Wofsy36T. B. Ryerson37Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USANational Center for Atmospheric Research, Boulder, CO, USAIAGOS-AISBL, Brussels, BelgiumDepartment of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory of Columbia University, New York, NY, USASchool of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USANASA Langley Research Center, Hampton, VA, USANOAA Global Monitoring Laboratory, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Global Monitoring Laboratory, Boulder, CO, USANOAA Global Monitoring Laboratory, Boulder, CO, USAFinnish Meteorological Institute, Space and Earth Observation Centre, Sodankylä, FinlandCooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Global Monitoring Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Global Monitoring Laboratory, Boulder, CO, USACooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USANational Institute of Water & Atmospheric Research (NIWA), Lauder, New ZealandCooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USANOAA Chemical Science Laboratory, Boulder, CO, USAServicio Meteorológico Nacional, Buenos Aires, ArgentinaNOAA Global Monitoring Laboratory, Boulder, CO, USAExperimental Studies Research Division, MSC/Environment and Climate Change Canada, Downsview, Ontario, CanadaEarth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USALaboratoire d'Aérologie, CNRS and Université Paul Sabatier, Université de Toulouse, Toulouse, FranceNational Center for Atmospheric Research, Boulder, CO, USASchool of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USANOAA Chemical Science Laboratory, Boulder, CO, USA<p>Ozone is a key constituent of the troposphere, where it drives photochemical processes, impacts air quality, and acts as a climate forcer. Large-scale in situ observations of ozone commensurate with the grid resolution of current Earth system models are necessary to validate model outputs and satellite retrievals. In this paper, we examine measurements from the Atmospheric Tomography (ATom; four deployments in 2016–2018) and the HIAPER Pole-to-Pole Observations (HIPPO; five deployments in 2009–2011) experiments, two global-scale airborne campaigns covering the Pacific and Atlantic basins.</p> <p>ATom and HIPPO represent the first global-scale, vertically resolved measurements of <span class="inline-formula">O<sub>3</sub></span> distributions throughout the troposphere, with HIPPO sampling the atmosphere over the Pacific and ATom sampling both the Pacific and Atlantic. Given the relatively limited temporal resolution of these two campaigns, we first compare ATom and HIPPO ozone data to longer-term observational records to establish the representativeness of our dataset. We show that these two airborne campaigns captured on average 53 %, 54 %, and 38 % of the ozone variability in the marine boundary layer, free troposphere, and upper troposphere–lower stratosphere (UTLS), respectively, at nine well-established ozonesonde sites. Additionally, ATom captured the most frequent ozone concentrations measured by regular commercial aircraft flights in the northern Atlantic UTLS. We then use the repeated<span id="page10612"/> vertical profiles from these two campaigns to confirm and extend the existing knowledge of tropospheric ozone spatial and vertical distributions throughout the remote troposphere. We highlight a clear hemispheric gradient, with greater ozone in the Northern Hemisphere, consistent with greater precursor emissions and consistent with previous modeling and satellite studies. We also show that the ozone distribution below 8 km was similar in the extra-tropics of the Atlantic and Pacific basins, likely due to zonal circulation patterns. However, twice as much ozone was found in the tropical Atlantic as in the tropical Pacific, due to well-documented dynamical patterns transporting continental air masses over the Atlantic. Finally, we show that the seasonal variability of tropospheric ozone over the Pacific and the Atlantic basins is driven year-round by transported continental plumes and photochemistry, and the vertical distribution is driven by photochemistry and mixing with stratospheric air. This new dataset provides additional constraints for global climate and chemistry models to improve our understanding of both ozone production and loss processes in remote regions, as well as the influence of anthropogenic emissions on baseline ozone.</p>https://acp.copernicus.org/articles/20/10611/2020/acp-20-10611-2020.pdf |
| spellingShingle | I. Bourgeois I. Bourgeois J. Peischl J. Peischl C. R. Thompson C. R. Thompson K. C. Aikin K. C. Aikin T. Campos H. Clark R. Commane B. Daube G. W. Diskin J. W. Elkins R.-S. Gao A. Gaudel A. Gaudel E. J. Hintsa E. J. Hintsa B. J. Johnson R. Kivi K. McKain K. McKain F. L. Moore F. L. Moore D. D. Parrish D. D. Parrish R. Querel E. Ray E. Ray R. Sánchez C. Sweeney D. W. Tarasick A. M. Thompson V. Thouret J. C. Witte S. C. Wofsy T. B. Ryerson Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions Atmospheric Chemistry and Physics |
| title | Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions |
| title_full | Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions |
| title_fullStr | Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions |
| title_full_unstemmed | Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions |
| title_short | Global-scale distribution of ozone in the remote troposphere from the ATom and HIPPO airborne field missions |
| title_sort | global scale distribution of ozone in the remote troposphere from the atom and hippo airborne field missions |
| url | https://acp.copernicus.org/articles/20/10611/2020/acp-20-10611-2020.pdf |
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