The text, published in the journal Geophysical Research Letters on June 29, explains that since 1951, “the difference between the two has shrunk by 0.41 degrees”.
The phenomenon could progress
The reason for this phenomenon? Greenhouse gas emissions. “Warmer air more humidity, which increases the chances of having a cloudy sky, which reflects the sun’s rays during the day but retains heat during the night”, advances the study contains.
The researchers say the gap could get even worse. Their simulations revealed that the gap between nighttime and daytime temperatures would continue to narrow and could only be stabilized “if we reduce greenhouse gas emissions sufficiently”.