Physics
Scientific paper
Feb 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3303712c&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 3, CiteID L03712
Physics
23
Biogeosciences: Climate Dynamics (1620), Global Change: Cryospheric Change (0776), Global Change: Oceans (1616, 3305, 4215, 4513), Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504), Oceanography: Physical: Air/Sea Interactions (0312, 3339)
Scientific paper
Recent climate trends over the Southern Hemisphere (SH) summer feature a strengthening of the circumpolar westerly and a weakening of the midlatitude westerly extending from the stratosphere to Earth's surface. Much of the change is attributable to Antarctic ozone depletion. However, the consequential ocean circulation changes are unknown. Here I demonstrate that the observed surface wind changes have forced a southward shift and spin-up of the super gyre, which links the subtropical South Pacific, Indian and Atlantic Ocean circulation, advecting more warm water southward. The circulation change includes a strengthening of the East Australian Current (EAC) flow passing through the Tasman Sea. The southward shift may be responsible for the observed unusually large warming in the SH midlatitude ocean and may contribute to the reported range extension to the south of many marine species in the South West Pacific.
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