Simulation of the global ocean thermohaline circulation with an eddy-resolving INMIO model configuration

Assessment of mean world ocean meridional\vspace *{.5ex} heat transport characteristics by a high-resolution model

“…Moreover, the magnitude of eddy heat flux here turns out to be one of the largest even on the global scale. Mean temperature and salinity fields obtained in this experiment were compared with the WOA09 data in [Ushakov and Ibrayev, 2017], and warm and salty bias of model data was found in the north near Cape Hatteras.…”

“…It is shown in [Gulev et al, 2003;Marsh et al, 2009] that in the Atlantic north of 50 ∘ N most of the MHT is formed by the horizontal circulation in the upper ocean, but not by the meridional overturning circulation. In the Southern Ocean south of 35 ∘ S, according to [Volkov et al, 2010], meridional overturning plays an important role, but its eddy component is negligible compared to the horizontal eddy heat transport. Jayne and Marotzke [2002] analyzed the results of numerical experiments in four depth intervals, and it was concluded that the zonal mean MHT at all latitudes is almost completely concentrated in the upper 1000-meter layer of the ocean.…”

“…Angle brackets define the mean value over a characteristic time scale of mesoscale eddies, which is about 1-3 months [Gill, 1982;Volkov et al, 2008]. It is worth noting that this approach takes into account not only the actual eddy effects but also all other short-time elements of the ocean circulation (transients), including the meandering of currents, tropical instability waves and fast variability of the Ekman layer.…”

“…By means of such technique [Jayne and Marotzke, 2002;Volkov et al, 2008Volkov et al, , 2010 studied the global distributions of the EMHT on the basis of model data with 0.25 ∘ resolution. The studies in [Meijers et al, 2007;Yim et al, 2010] consider particular basins of the world ocean with higher resolution, and the authors of [Griffies et al, 2015] give some characteristics of the eddy heat transport as a part of their global eddy-resolving model solution.…”

“…It follows the path of eddyresolving modeling researches and is based on the INMIO world ocean model. The model has been recently verified and calibrated in numerical experiments on simulating the climatic MHT distribution in the global and Atlantic oceans with 0.5 ∘ − 0.1 ∘ resolution Ushakov et al, 2015Ushakov et al, , 2016. The main principles and schemes of the model are based on the work [Ibrayev, 2001].…”