Fig. 8: Schematic summarizing processes responsible for changes in BSISO rainfall evolution between the present (upper panel) and the future (lower panel). | npj Climate and Atmospheric Science

Fig. 8: Schematic summarizing processes responsible for changes in BSISO rainfall evolution between the present (upper panel) and the future (lower panel).

From: Equatorial convection controls boreal summer intraseasonal oscillations in the present and future climates

Fig. 8

The multi-coloured shading represents the background moisture, and the red-coloured oval shape represents the convective centre. The shading intensity is representative of the strength. In the future climate, the background moisture will enhance uniformly throughout; thus, the background gradients remain the same. The day 0 equatorial convection is stronger and broader, leading to similar wind perturbations and, thus, similar moistening by the advection. Thus, the characteristics of northward propagation do not change. However, increased background moisture enhances the convection over the Bay of Bengal and Arabian Sea on day 12.

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