Arctic Sea Ice Decline Intensified Haze Pollution in Eastern China |
Figure 2 Regression maps of a, b the sea-level pressure and c, d the near-surface air temperature 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, sea-level pressure, and near-surface air temperature 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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