Intraseasonal variability in an aquaplanet general circulation model
نویسندگان
چکیده
منابع مشابه
Global Climate and Ocean Circulation on an Aquaplanet Ocean–Atmosphere General Circulation Model
A low-resolution coupled ocean–atmosphere general circulation model (OAGCM) is used to study the characteristics of the large-scale ocean circulation and its climatic impacts in a series of global coupled aquaplanet experiments. Three configurations, designed to produce fundamentally different ocean circulation regimes, are considered. The first has no obstruction to zonal flow, the second cont...
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The annular mode simulated by an atmospheric general circulation model with a zonally symmetric lower boundary is investigated. The annular mode, defined as the leading empirical orthogonal function (EOF) of the zonal-mean surface pressure, has a meridional structure consisting of a north–south dipole, similar to observations. The leading EOF of the zonally varying surface pressure has the same...
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We examine the variability of the ocean’s thermohaline circulation in a Oceanic General Circulation Model (OGCM) coupled to a two dimensional atmospheric Energy Balance Model (EBM). The EBM calculates air temperatures by balancing heat fluxes, including that from the ocean surface; air temperature and ocean circulation evolve together without imposed temperature restrictions except specificatio...
متن کاملDecadal variability of the North Atlantic in an ocean general circulation model
Climatic fluctuations on a decadal timescale in the North Atlantic in a global ocean general circulation model were considered. The analysis was carried out for the 3800-year stochastic forcing simulation of Mikolajewicz and Maier-Reimer in which the Hamburg LargeScale Geostrophic ocean model was driven by monthly climatologies of wind stress, air temperature, and freshwater flux with superimpo...
متن کاملIntraseasonal Variability in a Two-Layer Model and Observations
A two-layer shallow-water model with R15 truncation and topographic forcing is used to study intraseasonal variability in the Northern Hemisphere's (NH) extratropical atmosphere. The model's variability is dominated by oscillations with average periods near 65-70 and 40-50 days. These periods are also found in 13.5 years of daily upper-air data from January 1980 to July 1993. The spatial variab...
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ژورنال
عنوان ژورنال: Journal of Advances in Modeling Earth Systems
سال: 2010
ISSN: 1942-2466
DOI: 10.3894/james.2010.2.5