SciELO - Scientific Electronic Library Online

vol.16 issue4Climatology of landfalling hurricanes and tropical storms in MexicoNitrous oxide flux in maize and wheat cropped soils in the central region of Mexico during "El Niño" year 1998 author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO



Print version ISSN 0187-6236


BULGAKOV, S. N.  and  SKIBA, Yu. N.. Are transitions abrupt in Stommel's thermohaline box model?. Atmósfera [online]. 2003, vol.16, n.4, pp.205-229. ISSN 0187-6236.

A series of laboratory experiments with forced temperature and salinity were conducted using an apparatus (channel between pole and equator boxes) designed to duplicate the conceptual Stommel's model of thermohaline circulation. The flow patterns are discussed depending on modelling parameters (aspect ratio and buoyancy), and specified boundary conditions. Three steady states are found in the control space of the modelling parameters: two-layer thermal mode (T2), two-layer saline mode (S2), and three-layer hybrid state (H3). The thermohaline circulation exhibits both, smooth and abrupt transitions, depending on the rate of mixing. Free convection and double diffusion experiments with limited mixing show smooth transitions. Abrupt transitions were only found in the complete mixing experiments when two boxes were stirred by mixers.

Keywords : Thermohaline circulation; equilibria; laboratory modelling.

        · abstract in Spanish     · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License