Observations of near-zero ozone concentrations over the convective Pacific: Effects on air chemistry

Science

Volumn 274, Issue 5285, 1996, Pages 230-233

  Kley, D ^a   Grutzen, P J ^a   Smit, H G J ^a   Vomel H ^a   Oltmans, S J ^a   Grassl, H ^a   Ramanathan, V ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

DIMETHYL SULFIDE; HYDROXYL GROUP; NITRIC OXIDE; OZONE; SULFATE;

ARTICLE; ATMOSPHERE; HUMIDITY; OXIDATION; OZONE LAYER; PACIFIC ISLANDS; PRIORITY JOURNAL; TROPICS; TROPOSPHERE; ULTRAVIOLET RADIATION;

ATMOSPHERIC CHEMISTRY; HYDROXYL; MARINE BOUNDARYLAYER; MIXING RATIO; NEAR ZERO OZONE; NEAR-ZERO CONCENTRATIONS; OZONE; TROPOSPHERE;

PACIFIC, (EQUATORIAL);

EID: 0029664214     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5285.230     Document Type: Article

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24. 53% (15).
25. 2), interfere with the redox system of the ECC in conjunction with the sonde drifting through the ship's engine exhaust plume after balloon release. In such instances, data recorded during balloon descent were used for the first few hundred meters above the sea surface.
26. D. Kley et al., in preparation.
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28. 3 loss, appears unlikely.
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31. 3 column densities were about 275 Dobson units for the Atlantic cruise and for CEPEX as well. Therefore, the Atlantic and the CEPEX relevant J values should be similar.
32. We calculated the boundary layer evacuation times for the CEPEX region using the National Center for Atmospheric Research CCM3 model (P. Rasch, personal communication) from monthly mean MBL air masses and the upward component of the deep convective mass fluxes.
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40. We thank P. Rasch for supplying the estimates of the MBL evacuation times, and R. Vogt and J. Landgraf for carrying out the calculation on OH concentrations. This work was funded in part by NSF grant ATM 9405024. CEPEX was funded by NSF (ATM 8920119) and the Department of Energy (DE-F603-91ER61198).