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Climate crisis: Europe's cities are dangerously unprepared for hell heat waves



Hot weather becomes deadly in places that are not ready for it. In August 2003, during one of the worst heat waves seen in England in recent years, mortality in the country has risen by 16% due to heat. But in London, 42% more people have perished than the average for the same periods in the previous five years.

Temperatures in densely built cities are several degrees higher than rural and suburban areas. The phenomenon, known as the city's thermal island, is due to the combination of surfaces that catch heat, low airflow, traffic and other heat-generating activities that happen in cities.

The difference tends to increase at night, as cities do not cool as much as rural areas.

Older people and children are particularly vulnerable to heat in cities, but the extreme climatic conditions affect everyone.

  France endured its hottest day ever

but when it began to reach about 40 degrees Celsius 104 Fahrenheit), even healthy people are at risk, "said Bob Ward, Director of Policy and Communications at the Grantham Research Institute on Climate Change and the Environment, part of the London School of Productivity, also declining significantly when temperatures increase A 2018 study by the Harvard School of Public Health found that reaction time the students who sit in a room without air conditioning are 13% slower than those in the cooler rooms.WaterBoard's reflection pool, surrounded by gardens, provides relief during the heat wave. "media__image" src = "http://cdn.cnn.com/cnnnext/dam/assets/190628132300-03-cities-climate-crisis-restricted-large-169.jpg" />

This is a problem that will only get worse because more people are moving to cities. According to the UN, 55% of the world's population currently lives in cities. By 2050 this figure is likely to grow to 68%.

Europe gets a taste this week from what the climate crisis keeps. France, Germany, Poland and the Czech Republic noted that the temperature was broken this week

Cities were hardest hit. Paris introduced a special heating plan designed to give its residents relief. The plan was developed after the heat wave of 2003, in which only 14,000 people were killed in France. The city builds public refrigerators in municipal buildings, fogs in the streets, and keeps parks and pools open longer than usual.

While current European temperatures of just over 100 degrees Fahrenheit may not look too high for some, they are well above seasonal averages for the region.

And since most of Europe's infrastructure and cities were built long before anyone realized the dangers of climate change, it made the heat wave even more dangerous. "Cities that are accustomed to a more temperate climate, such as London, find it very difficult to handle," Ward said. "Places experiencing cold winters tend to worry more about insulation … but of course some of the measures you design to keep warmth in winter can prevent heat from coming out in the summer, a bigger problem

  How Your Health Is At Risk During A Thermal Wave

This is a severe problem in the UK when one of five buildings overheats in the summer, according to the Oddi Committee of the UK United Kingdom Catherine Brown, head of the Adaptation Committee on Climate Change in the UK, told the committee that the temperature in some British hospitals may exceed 30 degrees Celsius when the outside temperature is about 22 degrees (70 in Fahrenheit)

  Los Angeles tested white roads to reduce the level of street level.

Buildings with dark surfaces capture heat because they absorb light instead of reflecting it. According to Lawrence Berkeley's National Laboratory, a dark roof reflects only 20% of the light, compared to 80%, which bounces off the slightly stained.

Works with roads. Street services in Los Angeles tested the idea of ​​putting lightweight cover on otherwise dark asphalt roads last year. According to him, the coating reduces the temperature between 10 and 30 degrees Fahrenheit.

  It is so hot in Spain that the manure self-ignites, causing a fire of 10,000 acres

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But some decisions can worsen the situation. The air conditioner contributes to relieving these rooms, but makes it even hotter by throwing the hot air on the streets.

Even worse, it contributes to climate change. With approximately 1.2 billion electrical air-conditioning systems worldwide (a figure that is expected to trip by 2050), cooling technology can release enough greenhouse gas emissions into the atmosphere to cause temperatures to rise by 0 , 5 degrees Celsius by the end of the century. According to Rocky Mountain Institute
  Green roofs can keep buildings cool during the summer.

This is why scientists, architects and urban planners are desperately trying to find other ways to cool buildings and streets.

Creating more parks, green roofs and vertical gardens is one way to bring some relief. According to the Environmental Audit Committee, the surface temperature in urban green areas may be 15 to 20 degrees lower than the surrounding streets, which makes the air temperatures 2 to 8 degrees cooler.

Water is another favorite – fog, fountains and reflective pools cause temperature to drop.

Typically, the blinds can help keep the heat as long as they are on the outside of the windows and protect the light from inside.

  The lids of the Al Bahr tower in Abu Dhabi change their shape according to the time of the day.

They also should not be old schools. London-based architectural company Ahr covers a skyscraper in Abu Dhabi in dynamic color blinds that change shape according to time of day. As the screens fold and unfold in response to the movement of the sun, they reflect up to 50% of the light. AHR said the screens reduce the need for significant artificial lighting and artificial air conditioning.


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