Materials of the International Conference
50th Anniversary of the International Geophysical Year
and Electronic Geophysical Year

16-19 September 2007 • Suzdal, Russia

Interannual trends in the Southern Ocean sea surface temperature and sea level from remote sensing data

S. A. Lebedev1, 2

1Geophysical Center, Russian Academy of Sciences, Moscow, Russia

2State Oceanographic Institute, Moscow, Russia

Abstract

As it was shown recently, climate changes in Antarctica resulted in interannual trends of some climatic parameters like sea level atmospheric pressure, surface air temperature, ice thickness and others. These tendencies have effect on the Southern Ocean meteorological and hydrological regime. The following remote sensing data: AVHRR MCSST data, satellite altimetry data (merged data of mission ERS-2, TOPEX/Poseidon, Jason-1, ENVISAT, GFO-1) are used to analyse the interannual and/or climatic tendency of sea surface temperature (SST) and sea level anomaly (SLA). According to the obtained results, SST has positive trend 0.01±0.005oC yr-1 within 300–1000 km band northward of the Antarctic coast and negative trend –0.02±0.003oC yr-1 on average for the Southern Ocean for 24-yr record (1982–2005). SLA has interannual trend 0.24±0.026 cm yr-1 for 12-yr record (1993–2005). However in some areas (for example, Pacific-Antarctic Ridge) SST and SLA tendencies are stronger –0.065±0.007oC yr-1 and –0.21±0.05 cm yr-1, respectively.

Citation: S. A. Lebedev (2007), Interannual trends in the Southern Ocean sea surface temperature and sea level from remote sensing data, in: Materials of the International Conference '50th Anniversary of the International Geophysical Year and Electronic Geophysical Year', GC RAS, Moscow, doi:10.2205/2007-IGY50conf.

© 2007 Geophysical Center RAS and authors


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