Growth and decay of the equatorial Atlantic SST mode by means of closed heat budget in a coupled general circulation model
نویسندگان
چکیده
1 Department of Meteorology, University of Reading, Reading, UK, 2 Geophysis and Meteorology, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid, Spain, 3 Laboratoire d’Océanographie et du Climat: Expérimentations et Approches Numériques Laboratory, Sorbonne Universités (UPMC, Université Paris IV)-Centre National de la Recherche Scientifique-IRD-MNHN, Paris, France, 4 Institut de Recherche Pour le Développement-Laboratoire de Physique de l’atmosphère et de l’océan Simeon Fongang, Dakar, Senegal, 5 Instituto de Geociencias (IGEO) UCM-CSIC, Madrid, Spain, 6 Climate and Environmental Physics, Physics Institute and Oeschger Centre of Climate Change Research, University of Bern, Bern, Switzerland
منابع مشابه
The Impact of Horizontal Resolution on the Tropical Heat Budget in an Atlantic Ocean Model
An ocean general circulation model (OGCM) of the tropical Atlantic is coupled to an advective atmospheric boundary layer model. This configuration is used to investigate the hypothesis that resolving tropical instability waves (TIWs) in OGCMs will remove the equatorial cold bias that is a feature common to coarse-resolution OGCMs. It is shown that current eddy parameterizations cannot capture t...
متن کاملCoupled dynamics over the Indian Ocean: spring initiation of the Zonal Mode
Atmosphere and ocean model assimilated products, in conjunction with observed precipitation and ocean model estimates of Indonesian Throughflow (ITF) transport and barrier layer thickness, are analyzed to elucidate the role of external (ENSO and ITF) and internal (monsoon) factors in the initiation of the Indian Ocean Zonal Mode (IOZM). The diagnostics show that there exists a natural mode of c...
متن کاملImpact of the Equatorial Atlantic on the El Niño Southern Oscillation
Observations indicate that the Atlantic zonal mode influences El Niño Southern Oscillation (ENSO) in the Pacific, as already suggested in previous studies. Here we demonstrate for the first time using partial coupled experiments that the Atlantic zonal mode indeed influences ENSO. The partial coupling experiments are performed by forcing the coupled general circulation model (ECHAM5/MPI-OM) wit...
متن کاملLooking for the Role of the Ocean in Tropical Atlantic Decadal Climate Variability*
Ocean models are used to investigate how variations in surface heat fluxes and ocean heat transports contribute to variations of tropical Atlantic SSTs on decadal timescales. The observed patterns of variability, deduced from reanalyses of the National Centers for Environmental Prediction (NCEP), are found to involve the ocean’s response to variations in the strength of the northeast and southe...
متن کاملKey factors in simulating the equatorial Atlantic zonal sea surface temperature gradient in a coupled general circulation model
[1] Causes of the coupled model bias in simulating the zonal sea surface temperature (SST) gradient in the equatorial Atlantic are examined in three versions of the same coupled general circulation model (CGCM) differing only in the cumulus convection scheme. One version of the CGCM successfully simulates the mean zonal SST gradient of the equatorial Atlantic, in contrast to the failure of the ...
متن کامل