Cold stagnant air pockets in large refrigerated cellars

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All,

I'd appreciate your help with this...
We have a large cellar that we maintain at 34.5F. It spans
five floors, has dozens of rows/alleys and inevitable pockets of stagnant air. Water is used to clean floors/etc in the cellar. There are areas near the floors that are pocketed and occasionally we form ice on the floors which becomes a safety hazard. A workaround has been force ventilation in these areas with a portable blower...I hate this idea.
Does anyone have any ideas for a more elegant solution? Obviously large renovations to the structure would preferably be avoided.

Thanks,

 

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I should add...the supply air to the facility is ~27F...any warmer and we can't maintain the setpoint.