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Summer precipitation over most of the tropical Americas exhibits maxima in June and September, and a relative minimum in July. The minimum in summer precipitation over the northeastern (NE) tropical Pacific is known as the midsummer drought (MSD). Several theories have been put forward to explain the origin of the MSD, but most of them fail at addressing simultaneously the various elements that characterize it. To characterize the MSD and related processes, various data sources are used to represent tropical convective activity and atmospheric circulations. [Source: International Journal of Climatology]
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