Arctic Sea Ice Decline Intensified Haze Pollution in Eastern China |
Figure 4 Regression maps of a, b the near-surface 10 m meridional wind and c, d the specific humidity 850 hPa anomalies against the ASI and WHD anomalies during 1979-2008, respectively: a, c ASI; b, d WHD. The ASI index in a, c has been multipled by -1.0 for convenient comparison. The linear trends of the indices, meridional wind, and specific humidity have been removed before the regression analysis. The white line indicates significant regression at 95% confidence level with Student#cod#x02019;s t -test. |
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