Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century

Details Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3219604m&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 19, CiteID L19604

Mathematics

Logic

39

Global Change: Regional Climate Change, Global Change: Oceans (1616, 3305, 4215, 4513), Oceanography: General: Arctic And Antarctic Oceanography (9310, 9315), Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Oceanography: Biological And Chemical: Ecosystems, Structure, Dynamics, And Modeling (0439)

Scientific paper

The climate of the Western Antarctic Peninsula (WAP) is the most rapidly changing in the Southern Hemisphere, with a rise in atmospheric temperature of nearly 3°C since 1951 and associated cryospheric impacts. We demonstrate here, for the first time, that the adjacent ocean showed profound coincident changes, with surface summer temperatures rising more than 1°C and a strong upper-layer salinification. Initially driven by atmospheric warming and reduced rates of sea ice production, these changes constitute positive feedbacks that will contribute significantly to the continued climate change. Marine species in this region have extreme sensitivities to their environment, with population and species removal predicted in response to very small increases in ocean temperature. The WAP region is an important breeding and nursery ground for Antarctic krill, a key species in the Southern Ocean foodweb with a known dependence on the physical environment. The changes observed thus have significant ecological implications.

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