Transport of ozone to the surface by convective downdrafts at night

During the Large‐Scale Biosphere‐Atmosphere Experiment in Amazonia wet season experiment, the near‐surface measurements of equivalent potential temperature and ozone at night, when background levels of ozone are low, clearly show that convective downdrafts rapidly transport air with higher ozone and...

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Bibliographic Details
Published in:Journal of Geophysical Research. D. Atmospheres 2002-10, Vol.107 (D20), p.LBA 13-1-LBA 13-6
Main Authors: Betts, Alan K., Gatti, Luciana V., Cordova, Ana Maria, Silva Dias, Maria A. F., Fuentes, Jose D.
Format: Article
Language:English
Subjects:
downdrafts
ozone
tropical convention
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Summary:During the Large‐Scale Biosphere‐Atmosphere Experiment in Amazonia wet season experiment, the near‐surface measurements of equivalent potential temperature and ozone at night, when background levels of ozone are low, clearly show that convective downdrafts rapidly transport air with higher ozone and lower equivalent potential temperature down to the surface from around 800 hPa. This largely unreported downward transport of ozone may play a significant role in the photochemistry of the atmosphere boundary layer and increase the surface deposition of ozone.
ISSN:0148-0227
2156-2202
DOI:10.1029/2000JD000158