A modeling study of halogen chemistry's role in marine boundary layer ozone

Zang-Ho, Shon; Kim, Nowon

doi:10.1016/s1352-2310(02)00426-0

Cited by 21 publications

(6 citation statements)

References 38 publications

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“…Quantitatively similar findings were reported by Shon and Kim [2002]. Using the low estimate of V dO3 = 0.013 cm s −1 , these authors found that deposition to the sea surface accounted for 17% of the diurnal MBL ozone loss.…”

Section: Global Oceanic Ozone Dry Depositionsupporting

confidence: 86%

Atmosphere‐ocean ozone exchange: A global modeling study of biogeochemical, atmospheric, and waterside turbulence dependencies

Ganzeveld

Helmig

Fairall

et al. 2009

Global Biogeochemical Cycles

110

172

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[1] The significance of the removal of tropospheric ozone by the oceans, covering $2/3 of the Earth's surface, has only been addressed in a few studies involving water tank, aircraft, and tower flux measurements. On the basis of results from these few observations of the ozone dry deposition velocity (V dO3 ), atmospheric chemistry models generally apply an empirical, constant ocean uptake rate of 0.05 cm s À1 . This value is substantially smaller than the atmospheric turbulent transport velocity for ozone. On the other hand, the uptake is higher than expected from the solubility of ozone in clean water alone, suggesting that there is an enhancement in oceanic ozone uptake, e.g., through a chemical destruction mechanism. We present an evaluation of a global-scale analysis with a new mechanistic representation of atmosphere-ocean ozone exchange. The applied atmosphere chemistry-climate model includes not only atmospheric but also waterside turbulence and the role of waterside chemical loss processes as a function of oceanic biogeochemistry. The simulations suggest a larger role of biogeochemistry in tropical and subtropical ozone oceanic uptake with a relative small temporal variability, whereas in midlatitude and high-latitude regions, highly variable ozone uptake rates are expected because of the stronger influence of waterside turbulence. Despite a relatively large range in the explicitly calculated ocean uptake rate, there is a surprisingly small sensitivity of simulated Marine Boundary Layer ozone concentrations compared to the sensitivity for the commonly applied constant ocean uptake approach. This small sensitivity points at compensating effects through inclusion of the process-based ocean uptake mechanisms to consider variability in oceanic O 3 deposition consistent with that in atmospheric and oceanic physical, chemical, and biological processes.

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Section: Global Oceanic Ozone Dry Depositionsupporting

confidence: 86%

Atmosphere‐ocean ozone exchange: A global modeling study of biogeochemical, atmospheric, and waterside turbulence dependencies

Ganzeveld

Helmig

Fairall

et al. 2009

Global Biogeochemical Cycles

110

172

View full text Add to dashboard Cite

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“…In the literature, past experiments show a wide range of ozone deposition rates, with reported deposition velocities (v d ) spanning from ∼0.01 to 0.15 cm s −1 for ocean water, and 0.01-0.10 cm s −1 for fresh water (Ganzeveld et al, 2009). Current global climate models typically use a constant ozone deposition velocity value for ocean surfaces on the order of ∼0.013 to 0.05 cm s −1 (Ganzeveld and Lelieveld, 1995;Shon et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Determination of oceanic ozone deposition by ship-borne eddy covariance flux measurements

et al. 2010

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A fast response ozone analyzer based on the ozone-nitric oxide chemiluminescence method was integrated into the NOAA-ESRL flux system to achieve the first ship-borne, direct ozone flux measurements over the open ocean. Air was collected from an inlet at 18 m height over the ocean surface mounted to the bow-jackstaff and via a 30 m-long sampling line to the ozone instrument on the ship deck. A "puff" system was used for accurate and regular determination of the sample transport time (lag) between the inlet and the chemical analyzer. A Nafion-membrane dryer facilitated removal of fast water vapor fluctuations, which eliminated the need for quenching and density correction of the ozone signal. The sampling-analyzer system was found to have a ~0.25–0.40 s response time at a sensitivity of ~2800 counts s−1 per ppbv of ozone. Quality control and data filtering procedures for eliminating data that did not meet measurement requirements were critically evaluated. The new ozone flux system was deployed aboard the NOAA Ship Ronald H. Brown, and evaluated using results obtained during several research cruises off the coasts of the North and South America continents, yielding ozone deposition velocities (mean ± standard error) ranging from 0.009±0.001 cm s−1 to 0.24±0.020 cm s−1

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“…This literature gives little details on the chemical, biological and physical water properties during the observations. Currently, values on the order of V d =0.013 to 0.05 cm s −1 are used in atmospheric chemistry models (Ganzeveld and Lelieveld, 1995;Shon and Kim, 2002). Because the observations do not yield a consensus on wind speed dependency, the same ozone surface resistance is typically applied to all of the world's oceans and wind conditions.…”

Section: Introductionmentioning

confidence: 99%

Water-side turbulence enhancement of ozone deposition to the ocean

et al. 2007

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Abstract.A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport equation (with a chemical source term) in the ocean. It extends previous work that only considered reactions within the oceanic molecular sublayer. The sensitivity of the ocean-side transport to reaction rate and wind forcing is examined. A more complicated case with a much more reactive thin surfactant layer is also considered. The full atmosphere-ocean deposition velocity is obtained by matching boundary conditions at the interface. For an assumed ocean reaction rate of 10 3 s −1 , the enhancement for ozone deposition by oceanic turbulence is found to be up to a factor of three for meteorological data obtained in a recent cruise off the East Coast of the U.S.

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A modeling study of halogen chemistry's role in marine boundary layer ozone

Cited by 21 publications

References 38 publications

Atmosphere‐ocean ozone exchange: A global modeling study of biogeochemical, atmospheric, and waterside turbulence dependencies

Atmosphere‐ocean ozone exchange: A global modeling study of biogeochemical, atmospheric, and waterside turbulence dependencies

Determination of oceanic ozone deposition by ship-borne eddy covariance flux measurements

Water-side turbulence enhancement of ozone deposition to the ocean

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