킬 기후모델 수천 년 적분 기준 실험의 해수면온도의 변동성
Sea Surface Temperature Variability in a Multi-Millennial Control Simulation with the Kiel Climate Model
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The paper presents the internal climate variability simulated in a 5,000-year-long preindustrial control run with the Kiel Climate Model (KCM). The focus is on sea surface temperature (SST), as it links the ocean, atmosphere, and sea ice, making it an efficient indicator of the variability. The climate model has a particularly high resolution in the ocean model, at 0.5 degrees globally. The total SST variability obtained from the annual mean is quantified, as are the relative ratios of the decadal and centennial variability to the total variability. The SST shows rich variability, of which interannual variability is important in the tropical Pacific, decadal to multi-decadal variability in the western boundary currents, and centennial variability in high latitudes. The simulation shows particularly strong centennial variability with spectral energy concentrated at 80–100 years. This signal is centered in the Southern Ocean and affects global teleconnection, particularly in the tropics.
Abstract
The paper presents the internal climate variability simulated in a 5,000-year-long preindustrial control run with the Kiel Climate Model (KCM). The focus is on sea surface temperature (SST), as it links the ocean, atmosphere, and sea ice, making it an efficient indicator of the variability. The climate model has a particularly high resolution in the ocean model, at 0.5 degrees globally. The total SST variability obtained from the annual mean is quantified, as are the relative ratios of the decadal and centennial variability to the total variability. The SST shows rich variability, of which interannual variability is important in the tropical Pacific, decadal to multi-decadal variability in the western boundary currents, and centennial variability in high latitudes. The simulation shows particularly strong centennial variability with spectral energy concentrated at 80–100 years. This signal is centered in the Southern Ocean and affects global teleconnection, particularly in the tropics.