Climate teleconnection tied to global fires identified NatureComms
Fig. 4: Relationships among climate teleconnections from 1982 to 2018 using Principal Component Analysis .First versus second PCA component ; third versus fourth PCA component . Color indicates the importance of the component for each variable as the square cosine.Several analyses were conducted to test for significant relationships between CTs and BA. We first identified the fire season peak at pixel level across the globe to focus on the main fire season.
Finally, in order to better understand the relationship between climatic forcing and BA at multiple time scales, we summarized individual CT-fire associations into a set of CTDs. These CTD were derived by applying cluster analysis to the Pearson’s correlation coefficients obtained for the different combinations of CTs and lag windows at pixel level. We synthesized the association with the four analyzed time lags, grouping pixels into clusters depicting similar linkages.
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