Global warming causing earlier hotter days

Latest study carried out by the scientists at the University of California, Berkeley and Harvard that studied temperature data from 1850 to 2007 compiled by the University of East Anglia's Climate Research Unit in the United Kingdom come up with very interesting results, namely that the hottest and coldest days of the years now occurring almost two days earlier, or to be more precise from the mid-1950s onward (the period when global average temperatures began to rise), the hottest day came 1.7 days earlier.

Both summer and winter peaks are getting warmer and the gap between them is closing because winter temperatures are rising faster than summer ones. Scientists firmly believe this is all down to global warming phenomenon. But earlier arrival of the hottest day is not the only thing that implies on global warming, there are also other "early" signs: birds are migrating earlier, plants are blooming earlier, mountain snows are melting earlier.

Hottest days are now occurring almost two days earlier because of global warming

One of the authors of this study Alexander Stine said: "Once we have accounted for the fact that the temperature averaged over any given year is increasing, we find that some months have been warming more than other months, and we were surprised to find that over land, most of the difference in the warming of one month relative to another is simply the result of this shift in the timing of the seasons, and a decrease in the difference between summer and winter temperatures".

This decrease between summer and winter temperatures is very likely to continue in years to come as global warming impact strenghtens.