Two pathways of how remote SST anomalies drive the interannual variability of autumnal haze days in the Beijing–Tianjin–Hebei region, China

Wang, Jing; Zhu, Zhiwei; Qi, Li; Zhao, Qiaohua; He, Jinhai; Wang, Julian X. L.

doi:https://doi.org/10.5194/acp-19-1521-2019

Articles | Volume 19, issue 3

https://doi.org/10.5194/acp-19-1521-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-1521-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 3

Research article

|

06 Feb 2019

Research article |

| 06 Feb 2019

Two pathways of how remote SST anomalies drive the interannual variability of autumnal haze days in the Beijing–Tianjin–Hebei region, China

Jing Wang, Zhiwei Zhu, Li Qi, Qiaohua Zhao, Jinhai He, and Julian X. L. Wang

Supplement

https://doi.org/10.5194/acp-19-1521-2019-supplement

Data sets

Atmospheric circulation data ECMWF https://doi.org/10.1002/qj.828

Atmospheric circulation data NCEP/NCAR https://doi.org/10.1175/1520-0477(1996)077<0437:tnyrp>2.0.co;2

Sea-surface-temperature data NOAA https://doi.org/10.1175/jcli-d-16-0836.1

Monthly precipitation data NOAA https://doi.org/10.1175/1525-7541(2002)003<0249:glpaym>2.0.co;2

Ground observations CMA https://doi.org/10.5194/acp-18-3173-2018

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Short summary

Less attention has been paid to haze weather during the autumn season. Here, we unravel the mechanism of how SST anomalies over the subtropical North Atlantic and western North Pacific drive the interannual variability of the autumnal haze days in the Beijing–Tianjin–Hebei region. The two pathways of SST anomaly forcings can result in an anticyclonic (cyclonic) anomaly over Northeast Asia, leading to a lower-level southerly (northerly) anomaly and in turn more (fewer) haze days in this region.