An intercomparison between the surface heat flux feedback in five coupled models, COADS and the NCEP reanalysis

摘要: The surface heat flux feedback is estimated in the Atlantic and extra-tropical Indo-Pacific, using monthly sea temperature anomaly data from control simulations with five global climate models, it compared to estimates derived COADS NCEP reanalysis. In all sets, negative nearly everywhere damps anomalies. At latitudes, strongly dominated by turbulent fluxes. radiative can be positive or negative, depending on location season, but remains small, except some models tropical Atlantic. strong mid-latitude storm tracks, exceeding 40 W m–2 K–1 at place, Northern Hemisphere substantially underestimated several models. weakens high although do not reproduce weak found northern North main differences are where weakly , as observations, others exceed 30 W m–2 K–1 large scales, part because of a contribution fluxes, particular during spring. A comparison between similar atmospheric oceanic components suggests that model primarily responsible for latitudes. Atlantic, ocean behavior plays an equal role. reflected persistence, which too small damping large. good representation thus required simulate variability realistically.