Climate change affects nights and days differently in much of the world, including Europe, with the former raising temperatures faster than the latter. This shows a new British scientific study, according to which between 1983-2017 there was a difference of rise above 0.25 degrees Celsius in the average annual temperature between nights and days on about half the planet.
In recent decades the days are heating up faster in some countries and the nights in others, but the total land area of the Earth where the temperature rises the most at night is more than double that of the region where the temperature rises faster during the day.
Europe, West Africa, southwestern America and Central Asia are among the regions where nighttime temperatures are rising faster than daytime. In contrast, in the southern United States, Mexico and the Middle East, days are heating up faster.
This “temperature asymmetry” is largely due to changes in cloud cover levels. Increased clouds block the sun’s rays and thus drop the temperature during the day, while maintaining a relatively high temperature and humidity at night. The opposite happens when the clouds decrease, so more heat reaches the Earth during the day and is lost at night.
Researchers at the University of Exeter, led by Dr. Daniel Cox, who published in the journal Global Change Biology, said that “this asymmetry has potentially significant implications for the natural world.” According to Cox, “the greatest rise in temperature at night is related to the wetter climate, which has important implications for plant growth and how species such as mammals and insects interact.“
Research may indicate that climate change is leading to the gradual extinction of some species, but in the long run global warming is leading to species proliferation and biodiversity enrichment, according to a new British scientific study.
Researchers from the Universities of York, Leeds and Glasgow, led by evolutionary biologist Peter Meiju, published the study in a review of the US National Academy of Sciences (PNAS) survey, according to GeoScience and Nature. data reaching up to 540 million years ago. The researchers – to their great surprise, as they say – found a direct proportional relationship between heat and biodiversity: when the former increased, so did the second, and when the former receded, the latter declined.
The study thus concluded that previous warm climates on Earth were accompanied by increasing species extinction, but at the same time promoted the creation of new species, eventually increasing biodiversity in the long run. Based on this reasoning, British scientists suspect that the current trend of rising temperatures will cause the loss of several species, but over time – something that cannot be understood now – the global biosphere will eventually be enriched by climate change.
Scientists have for years observed that the abundance of species is increasing as one approaches the hottest Ecuador. The new study argues that the same trend – the ratio between heat and biodiversity – applies not only to space, but also over time. Of course, as biology professor Tim Benton pointed out, “this does not mean that the current global warming is good for existing species. Increases in global biodiversity take millions of years and in the meantime it is to be expected that several species extinctions will occur.“
According to Meihiu, the different rhythm of the two changes plays a decisive role, as the evolution of new species from the preceding ones takes thousands or even millions of years, that is, much slower than the extinctions of species already observed due to climate change.