A new indicator on the impact of large-scale circulation on wintertime particulate matter pollution over China

Jia, B.; Wang, Y.; Yao, Y.; Xie, Y.

doi:10.5194/acp-15-11919-2015

Articles | Volume 15, issue 20

https://doi.org/10.5194/acp-15-11919-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Haze-fog forecasts and near real time (NRT) data application...

https://doi.org/10.5194/acp-15-11919-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 20

Research article

|

27 Oct 2015

Research article |

| 27 Oct 2015

A new indicator on the impact of large-scale circulation on wintertime particulate matter pollution over China

B. Jia, Y. Wang, Y. Yao, and Y. Xie

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Aug 2015	28	71	3	102
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Oct 2015	104	100	1	205
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Short summary

We developed a new indicator, Siberian High position index (SHPI), which depicts the mean longitudinal position of the SH, as a new indicator of the large-scale circulation pattern that controls wintertime air quality in China. This SHPI explains 58% and 64% of the interannual variability of winter AOD during 2001-2013 over North China and South China, respectively. The extreme PM pollution of January 2013 is found to be associated with extremely high values of SHPI.