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As atmospheric waves propagate around the equator, clouds often form as humid air ascends. These clouds and convective systems drive tropical rainfall around the equator where the northern and southern trade winds meet. However, the zone's clouds are difficult to simulate individually in general circulation models (GCMs). Here researchers use aquaplanet experiments to zero in on the effects of small-scale processes in the tropics that cause discrepancies between those climate models. [Source: EOS (American Geophysical Union)]
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