London : Researchers have discovered why more rapid warming at night compared to the day, which has been seen around the globe in recent decades, is likely to continue. Observations from the last 50 years have shown that the nights have been warming much faster than the days, reports IANS.
Part of this more rapid warming at night is innate to the climate system, because the night-time temperatures are inherently more sensitive to climate forcing, said the study published in the International Journal of Climatology.
The research led by Richard Davy from Nansen Environmental and Remote Sensing Centre in Norway examined the causes of the more rapid warming of nights from observations and model reconstructions of the climate in the 20th century.
The researchers found that sensitivity to warming is linked to the layer of air just above the ground which is known as the boundary-layer as it is essentially separated from the rest of the atmosphere. At night this layer is very thin, just a few hundred meters, whereas during the day it grows up to a few kilometres.
