As geographers explain in a Twitter thread, the heat island is the process that occurs when buildings, industrial activities, giant concrete molds and other absorbent heat materials accumulate heat. Compared to the surrounding rural environment, this raises urban temperatures, as shown by the following images of San Sebastian and Vitoria (greater thermal difference in San Sebastian):
The effect is most pronounced at night, where cement resists heat in urban areas. See graph for Gran Bilbao.
These and other problems are explained with data and graphics because it's broader than here. On how to address this problem, they state that measures can be taken to reduce heat island temperatures:
Next week they will report more on the situation in Pamplona. If you want to help those of Haritik Hiriko, here's the opportunity.
Iruñeko Txantrea auzoko kale-izendegian frankismoan errepresaliatuak izan ziren hamar emakume gogoratuko dituzte. Ekitaldia egin zuten atzo eta auzoaren hegoaldean dagoen plaza bat oroimen gune ere izendatu zuten. "Garrantzitsua da historian gertatutakoa gogoratzea;... [+]
China, about 1417 years old. Admiral Zheng He, a salaried explorer of Ming Dynasty emperors, said it was possible “for everyone to leave China.” By then, the Chinese colony network began to expand in the Indian Ocean, the Red Sea and Southeast Asia, so the Chinese explorer... [+]