Characteristics of intercontinental transport of tropospheric ozone from Africa to Asia

Han, Han; Liu, Jane; Yuan, Huiling; Zhuang, Bingliang; Zhu, Ye; Wu, Yue; Yan, Yuhan; Ding, Aijun

doi:https://doi.org/10.5194/acp-18-4251-2018

Articles | Volume 18, issue 6

https://doi.org/10.5194/acp-18-4251-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Global and regional assessment of intercontinental transport...

https://doi.org/10.5194/acp-18-4251-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 6

Research article

|

28 Mar 2018

Research article |

| 28 Mar 2018

Characteristics of intercontinental transport of tropospheric ozone from Africa to Asia

Han Han, Jane Liu, Huiling Yuan, Bingliang Zhuang, Ye Zhu, Yue Wu, Yuhan Yan, and Aijun Ding

Supplement

https://doi.org/10.5194/acp-18-4251-2018-supplement

Data sets

TES ozone data NASA Langley Atmospheric Science Data Center https://eosweb.larc.nasa.gov/project/tes/tes_table

NCEP/NCAR reanalysis NOAA Earth System Research Laboratory https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html

OLR data NOAA Earth System Research Laboratory https://www.esrl.noaa.gov/psd/data/gridded/data.interp_OLR.html

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Short summary

Imported African ozone peaks in the Asian middle and upper troposphere in March. The seasonality of African ozone influence on Asia is mainly driven by the seasonal swing of the ITCZ, the Hadley circulation, and the northern subtropical westerlies. The stronger the ITCZ over Africa in a boreal winter is, the more African ozone is transported to Asia that winter. The convective divergence over the ITCZ and the Somali jet are drivers of interhemispheric transport of African ozone.