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Heat intensifies in cities by 400%, research

 An extensive research team of American environmentalists has discovered that in cities around the world, the intensity of heat has increased by an average of 400% in 33 years, while it continues to increase.

The study found that since 1985, the global urban population has more than doubled from 2 billion to 4.4 billion, which has led to a multiplication of urban management problems, including environmental problems. That's a big part.

Experts from the University of California, Santa Barbara, Columbia University, New York, the University of Minnesota, and the University of Arizona collected data on climate, temperature, and hottest days of the year in more than 13,000 urban locations around the world. Analyzed

These data were collected from various sources, including satellites, from 1983 to 2016.

The analysis found that the average increase in global temperature during these 33 years was four times (400%) higher than in cities.

As with previous environmental studies, the study found higher risks for poor and under-resourced urban areas, with a significant increase in the number of hot days a year in these cities. The total population of these cities is about 1.7 billion.

The highest increase in average city temperatures was observed in sub-Saharan Africa and South Asian countries (especially Pakistan, India and Bangladesh).

According to experts, the reasons for the dramatic rise in urban temperatures include a growing population, an increase in the number of vehicles, an increase in industrial activity and the ever-increasing number of heat-absorbing structures in cities.

Scientists have warned that if immediate and effective measures are not taken to save the rapidly deteriorating environment in cities, housing in urban areas will become extremely difficult by 2050.

According to a report published online in the latest issue of the Proceedings of the National Academy of Sciences, environmental degradation in cities will not be limited to them but will also affect the rivers flowing in these countries. It can also cause additional problems such as flooding and drought.

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