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Intertropical Convergence Zone of Heavy Preciptiation Moving North
July 2, 2009 by admin · Leave a Comment
The rain band near the equator that determines the supply of freshwater to nearly a billion people throughout the tropics and subtropics has been creeping north for more than 300 years, probably because of a warmer world, according to research published in the July issue of Nature Geoscience. If the band continues to migrate at just less than a mile (1.4 kilometers) a year, which is the average for all the years it has been moving north, then some Pacific islands near the equator — even those that currently enjoy abundant rainfall — may be drier within decades and starved of freshwater by midcentury or sooner. The prospect of additional warming because of greenhouse gases means that situation could happen even sooner.
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Intertropical Convergence Zone of Heavy Preciptiation Moving North
