Which of the following conditions leads to hurricane season in the atlantic region?
a. wind speeds in the atlantic ocean
b. warm waters in the atlantic ocean
c. high pressure zones over the atlantic ocean
d. high wind speeds in the upper atmosphere above the atlantic ocean

A

Explanation:

Current oceanic and atmospheric conditions that make an “extremely active” hurricane season possible are warmer-than-average sea surface temperatures in the tropical Atlantic Ocean and Caribbean Sea, reduced vertical wind shear, weaker tropical Atlantic trade winds and an enhanced west African monsoon. These conditions are expected to continue for the next several months. A main climate factor behind these conditions is the ongoing warm phase of the Atlantic Multi-Decadal Oscillation, which reappeared in 1995 and has been favoring more active hurricane seasons since that time. 

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the denominator has a very specific role.