Ventilation under global warming
نویسندگان
چکیده
Since the upper ocean takes up much of the heat added to the earth system by an-thropogenic global warming, one would expect that global warming would lead to an increase in stratification and a decrease in the ventilation of the ocean interior. However , multiple simulations in global coupled climate models using an ideal age tracer 5 which is set to zero in the mixed layer and ages at 1 yr/yr outside this layer show that the intermediate depths in the low latitudes become younger under global warming. This paper reconciles these apparently contradictory trends, showing that a decrease in upwelling of old water from below is responsible for the change. Implications for global biological cycling are considered.
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How does ocean ventilation change under global warming?
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