In the 1990s Atlantic hurricane frequency increased as part of a natural, long-term cycle.

Question

Quizplus · Accepted Answer

This is true. The 1990s saw an increase in Atlantic hurricane frequency as part of a natural cycle known as the Atlantic Multidecadal Oscillation (AMO). The AMO is a pattern of natural variation in sea surface temperatures, atmospheric circulation, and rainfall over the Atlantic basin that lasts for decades at a time. During the positive phase of the AMO, which started in the 1990s and is expected to last until the 2030s, Atlantic hurricane activity tends to increase.

In the 1990s Atlantic Hurricane Frequency Increased as Part of a Natural