Table 3 AOD (\({\boldsymbol{\tau }}\)), autochthonic AOD (\({{\boldsymbol{\tau }}}_{{\boldsymbol{a}}}^{{{\boldsymbol{\beta }}}_{0}}\)), and wind contribution (WF) changes separated by two stages from 1980 to 2014.

From: The impacts of regional transport and meteorological factors on aerosol optical depth over Beijing, 1980–2014

 

\({\boldsymbol{\tau }}\)

\({{\boldsymbol{\tau }}}_{{\boldsymbol{a}}}^{{{\boldsymbol{\beta }}}_{0}}\)

WF (WFN/WFS)

1980–2006

2006–2014

1980–2006

2006–2014

1980–2006

2006–2014

MAM

+39.1%

−10.4%

+28.9%

−11.1%

+4.6%

+1.1%

−2.7%

+0.3%

JJA

+49.8%

−20.2%

+73.0%

−31.1%

+5.6%

−2.2%

+10.8%

+2.7%

SON

+66.5%

−32.8%

+42.9%

−38.0%

+19.3%

−3.4%

+6.9%

+3.5%

DJF

+33.1%

+35.2%

+58.5%

+26.7%

+1.2%

−1.8%

+20.7%

+8.8%