What are urban heat islands or why it is increasingly unbearable to sleep

soumyasarkar59

As predicted at the beginning of summer , we are on track for it to be the warmest . One more time. In fact, last July became the July with the highest temperatures ever recorded globally. And now in Spain we are suffering the fourth heat wave of the summer with several parts of the country registering 42ºC . This stew is especially suffered in cities, due to the phenomenon known as urban heat island . It makes the nights especially warm, making it very difficult to rest if you do not use air conditioning. A recent study has revealed that the most pronounced is in Madrid , surpassing cities such as Cairo (Egypt) or Bombay (India).

Science has discovered how to convert the most abundant element in our cities into batteries IN MOTORPASIÓN Science has discovered how to convert the most abundant element in our cities into batteries What is the heat island of cities? NY The urban heat Cell Phone Number List island effect (UHI or UHI) occurs in cities, which are areas much hotter than their surrounding areas. This is due to the difficulty of dissipating heat in urban centers due to surfaces, such as asphalt or concrete, which are abundant in relation to the little vegetation. These types of surfaces absorb solar radiation during the day and release heat at night . Which means that it is very difficult to lower the temperature in the early morning.



If we add heat waves to the equation, with temperatures close to 40ºC, we are talking about tropical nights with minimum temperatures around 25ºC. Madrid and its heat island: the worst. The aforementioned study prepared by the consulting firm Arup reveals dizzying data on the temperature differences between the center of six capitals and their surrounding areas within a radius of 150 km². That is, the so-called heat islands. It has done so using the UHeat digital tool and based on satellite images and open source climate data. And the worst heat islands are found in three cities: Madrid, Bombay and London, with the Spanish capital in the lead. With hardly any vegetation, unbearable nights with up to 26ºC minimum Data collected on the hottest day last year was used for this study.