Effect of the Atlantic hurricanes on the oceanic meridional overturning circulation and heat transport

Details Effect of the Atlantic hurricanes on the oceanic meridional overturning circulation and heat transport Effect of the Atlantic hurricanes on the oceanic meridional overturning circulation and heat transport

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3603702h&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 3, CiteID L03702

Physics

5

Oceanography: Physical: Decadal Ocean Variability (1616, 1635, 3305, 4215), Oceanography: Physical: Air/Sea Interactions (0312, 3339), Global Change: Global Climate Models (3337, 4928), Global Change: Climate Dynamics (0429, 3309), Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513)

Scientific paper

Hurricanes have traditionally been perceived as intense but relatively small scale phenomena, with little effect on the large scale climate system. However, recent evidence has suggested that hurricanes could play a much more significant role in global climate. Here we prescribe Atlantic hurricanes in a global coupled climate model to show that, climatically, the strong hurricane winds can strengthen the Atlantic meridional overturning circulation (MOC) that is responsible for an increased northward meridonal heat transport (MHT), and the hurricane rainfall tends to weaken the MOC and to reduce the MHT. The net effect of the hurricanes on the MOC and MHT depends on the outcome of these two competing processes. This result implies that hurricanes may indeed play an important role in the coupled climate system and need to be studied further in high resolution global coupled models.

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