Metropolitan regions that are noticeably warmer than the nearby rural areas are known as urban heat islands or UHIs. The difference in temperature can be between 3 and 5 degrees Celsius. Luke Howard, a British amateur meteorologist, first noted the presence of an urban heat island in 1810. In his book The Climate of London, Howard—a pioneer in the field of urban climatology—first explained the phenomenon of UHI. He demonstrated that central London’s temperatures were higher (by about 2 degrees Celsius) than those simultaneously reported in the neighbouring countryside. However, the German meteorologist Albert Peppler, who defined it as “a heated stagnant mass of air over the metropolis,” is claimed to have first used the term “urban heat island” as “städtischen Wärmeinsel” in 1929. Click on the “Download PDF” option provided below to know more on-
- What is an urban heat island (UHI)?
- Why are urban heat islands formed?
- How does it affect life in cities?
- How can it be mitigated?