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Choi HD, Liu H, Crawford JH, Considine DB, Allen DJ, Duncan BN, Horowitz LW, Rodriguez JM, Strahan SE, Zhang L, Liu X, Damon MR, Steenrod SD. Global O 3-CO Correlations in a Chemistry and Transport Model During July-August: Evaluation with TES Satellite Observations and Sensitivity to Input Meteorological Data and Emissions. ATMOSPHERIC CHEMISTRY AND PHYSICS 2017; 17:8429-8452. [PMID: 32457810 PMCID: PMC7250209 DOI: 10.5194/acp-17-8429-2017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We examine the capability of the Global Modeling Initiative (GMI) chemistry and transport model to reproduce global mid-tropospheric (618hPa) O3-CO correlations determined by the measurements from Tropospheric Emission Spectrometer (TES) aboard NASA's Aura satellite during boreal summer (July-August). The model is driven by three meteorological data sets (fvGCM with sea surface temperature for 1995, GEOS4-DAS for 2005, and MERRA for 2005), allowing us to examine the sensitivity of model O3-CO correlations to input meteorological data. Model simulations of radionuclide tracers (222Rn, 210Pb, and 7Be) are used to illustrate the differences in transport-related processes among the meteorological data sets. Simulated O3 values are evaluated with climatological ozone profiles from ozonesonde measurements and satellite tropospheric O3 columns. Despite the fact that three simulations show significantly different global and regional distributions of O3 and CO concentrations, all simulations show similar patterns of O3-CO correlations on a global scale. These patterns are consistent with those derived from TES observations, except in the tropical easterly biomass burning outflow regions. Discrepancies in regional O3-CO correlation patterns in the three simulations may be attributed to differences in convective transport, stratospheric influence, and subsidence, among other processes. To understand how various emissions drive global O3-CO correlation patterns, we examine the sensitivity of GMI/MERRA model-calculated O3 and CO concentrations and their correlations to emission types (fossil fuel, biomass burning, biogenic, and lightning NOx emissions). Fossil fuel and biomass burning emissions are mainly responsible for the strong positive O3-CO correlations over continental outflow regions in both hemispheres. Biogenic emissions have a relatively smaller impact on O3-CO correlations than other emissions, but are largely responsible for the negative correlations over the tropical eastern Pacific, reflecting the fact that O3 is consumed and CO generated during the atmospheric oxidation process of isoprene under low NOx conditions. We find that lightning NOx emissions degrade both positive correlations at mid-/high- latitudes and negative correlations in the tropics because ozone production downwind of lightning NOx emissions is not directly related to the emission and transport of CO. Our study concludes that O3-CO correlations may be used effectively to constrain the sources of regional tropospheric O3 in global 3-D models, especially for those regions where convective transport of pollution plays an important role.
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Affiliation(s)
| | - Hongyu Liu
- National Institute of Aerospace, Hampton, VA
| | | | - David B. Considine
- NASA Langley Research Center, Hampton, VA
- Now at NASA Headquarters, Washington, D.C
| | | | | | | | | | - Susan E. Strahan
- NASA Goddard Space Flight Center, Greenbelt, MD
- Universities Space Research Association, Columbia, MD
| | - Lin Zhang
- Harvard University, Cambridge, MA
- Now at Peking University, Beijing, China
| | | | - Megan R. Damon
- NASA Goddard Space Flight Center, Greenbelt, MD
- Science Systems and Applications, Inc., Lanham, MD
| | - Stephen D. Steenrod
- NASA Goddard Space Flight Center, Greenbelt, MD
- Universities Space Research Association, Columbia, MD
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Curtius J, Sierau B, Arnold F, de Reus M, Ström J, Scheeren HA, Lelieveld J. Measurement of aerosol sulfuric acid: 2. Pronounced layering in the free troposphere during the second Aerosol Characterization Experiment (ACE 2). ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001jd000605] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Stoller P, Cho JYN, Newell RE, Thouret V, Zhu Y, Carroll MA, Albercook GM, Anderson BE, Barrick JDW, Browell EV, Gregory GL, Sachse GW, Vay S, Bradshaw JD, Sandholm S. Measurements of atmospheric layers from the NASA DC-8 and P-3B aircraft during PEM-Tropics A. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/98jd02717] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hoell JM, Davis DD, Jacob DJ, Rodgers MO, Newell RE, Fuelberg HE, McNeal RJ, Raper JL, Bendura RJ. Pacific Exploratory Mission in the tropical Pacific: PEM-Tropics A, August-September 1996. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/1998jd100074] [Citation(s) in RCA: 124] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chatfield RB, Vastano JA, Singh HB, Sachse G. A general model of how fire emissions and chemistry produce African/oceanic plumes (O3, CO, PAN, smoke) in TRACE A. ACTA ACUST UNITED AC 1996. [DOI: 10.1029/96jd01871] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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