منابع مشابه
Mechanisms for ENSO Phase Change in a Coupled GCM
The mechanisms leading to El Niño onset and termination in the ECHAM4/OPA coupled GCM are assessed and compared to observations and existing ENSO paradigms. At the equator as well as off equator, the patterns and timing of modeled El Niño composites are in good agreement with those observed. Heat content of the west Pacific is confirmed as a precursor to ENSO phase change, and the present work ...
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The prognostic tendency (PT) correction method is applied in an attempt to reduce systematic errors in coupled GCM seasonal forecasts. The PT method computes the systematic initial tendency error (SITE) of the coupled model and subtracts it from the discrete prognostic equations. In this study, the PT correction is applied only to the three-dimensional ocean temperature. The SITE is computed by...
متن کاملEnsemble-based Parameter Estimation in a Coupled Gcm 2 Using the Adaptive Spatial Average Method 3 4 5
37 Ensemble-based parameter estimation for a climate model is emerging as an 38 important topic in climate research. For a complex system as a coupled ocean-atmosphere 39 general circulation model, the sensitivity and response of a model variable to a model 40 parameter could vary spatially and temporally. Here, we propose an adaptive spatial 41 average (ASA) algorithm to increase the efficienc...
متن کاملImpact of resolving the diurnal cycle in an ocean–atmosphere GCM. Part 2: A diurnally coupled CGCM
Coupled ocean atmosphere general circulation models (GCM) are typically coupled once every 24 h, excluding the diurnal cycle from the upper ocean. Previous studies attempting to examine the role of the diurnal cycle of the upper ocean and particularly of diurnal SST variability have used models unable to resolve the processes of interest. In part 1 of this study a high vertical resolution ocean...
متن کاملProcesses governing the predictability of the Atlantic Meridional Overturning Circulation in a coupled GCM
The processes that govern the predictability of decadal variations in the North Atlantic Meridional Overturning Circulation (MOC) are investigated in a long control simulation of the ECHO-G coupled atmosphere-ocean model. We elucidate the roles of local stochastic forcing by the atmosphere, and other potential ocean processes, and use our results to build a predictive regression model. The prim...
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ژورنال
عنوان ژورنال: Journal of Climate
سال: 2000
ISSN: 0894-8755,1520-0442
DOI: 10.1175/1520-0442(2000)013<1371:tcge>2.0.co;2