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Warming of the atmosphere is expected to result in intensified atmospheric pressure gradients. There is already some evidence that this has resulted in increased storm frequency and intensity over recent years. Atmospheric conditions are largely responsible for surface currents, which transport water in the surface layers of the ocean where most of the biomass resides (Harley 2006). Modeling predicts that advection, lateral movement of water, will increase as a result of global warming, especially in eastern boundary currents. Increased advection is generally linked to decreased biomass (Harley 2006).
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