Stability of Thermohaline circulation with respect to fresh water release - Physics > Atmospheric and Oceanic PhysicsReportar como inadecuado




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Abstract: The relatively warm climate found in the North- Western Europe is due to thegulf stream that circulates warm saline water from southern latitudes toEurope. In North Atlantic ocean the stream gives out a large amount of heat,cools down and sinks to the bottom to complete the Thermohaline circulation.There is considerable debate on the stability of the stream to inputs of freshwater from the melting ice in Greenland and Arctic. The circulation, beingswitched off, will have massive impact on the climate of Europe.Intergovernmental panel on climate change IPCC has warned of this danger inits recent report. Our aim is to model the Thermohaline circulation at thepoint where it sinks in the North-Atlantic. We create a two dimensionaldiscrete map modeling the salinity gradient and vertical velocity of thestream. We look for how a perturbation in the form of fresh water release candestabilise the circulation by pushing the velocity below a certain threshold.



Autor: Ajay Patwardhan, Vivek Tewary

Fuente: https://arxiv.org/







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