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Nocturnal increases in surface temperature

The surface temperature during some clear nights at Bombay Airport are observed rising, instead of falling, under fine weather conditions. The cases of nocturnal rise in surface temperature of the order of 2°C and more occurring in an hour have been analysed and discussed. 
The study reveals that nocturnal rise in surface temperature is caused by the transfer of momentum and heat downward from layers aloft in the inversion layer. This transfer is caused by the turbulence which is caused mainly due to the limiting wind shear developed between surface and layers aloft. The land breeze circulation plays a significant role in increasing or decreasing this turbulence at the surface.