Finally, researchers have the answer to the long unanswered question — When and Where global warming appeared first on our Earth. According to new findings, global warming was witnessed in the tropics as early as the 1960s South East Asia and Africa were among the first regions on Earth to suffer from global warming. Researchers say that clear signs of global warming in South East Asia were first found in the 1940s.
The one of its kind study shows when global warming actually started affecting temperature which resulted in extreme rainfall events later on. The study was based on average temperature and extreme temperature readings.
“We examined average and extreme temperatures because they were always projected to be the measure that is most sensitive to global warming,” said lead author Andrew King from the Australian Research Council’s Centre of Excellence for Climate System Science.
“Remarkably our research shows that you could already see clear signs of global warming in the tropics by the 1960s but in parts of Australia, South East Asia and Africa it was visible as early as the 1940s,” King said.
While explaining the reason behind the changes in average temperature and extreme temperature in the tropics, King said that temperatures in these areas have very narrow range which resulted in smaller shifts in temperature. Thus, global warming was easily seen in the tropics. Researchers noticed changes in average temperature first in the tropics while changes in extreme temperature confirmed global warming.
In addition, the study found that between 1980-2000 most of regions across the world started seeing the signs of global warming. There also were some exceptions like some areas in the US where clear signs of global warming are yet to be seen, according to study model.
Moreover, heavy rainfall is expected after the global warming as it changes the environmental balance. Scientists say that they haven’t recorded any such unnatural changes in rainfall and they expect heavy precipitation during winters in Russia, Canada and northern Europe over the next 10-30 years.
The study was published in Environmental Research Letters.