Uploaded on 2017-08-28 by Maksymilian Macur

1) Portland is up to 19,0ºF hotter, Seattle is 17,0ºF hotter, Austin is up tp 15,0º hotter. The top 10 cities with the most intense summer urban heat islands (average daily urban-rural temperature differences) over the past 10 years are: Las Vegas (7.3°F), Albuquerque (5.9°F), Denver (4.9°F), Portland (4.8°F), Louisville (4.8°F), Washington, D.C. (4.7°F), Kansas City (4.6°F), Columbus (4.4°F), Minneapolis (4.3°F), Seattle (4.1°F) 2) I live in Gdansk, which belongs to the Tricity agglomeration. I was looking for, but I could not find any research that would accurately describe the temperature difference between the city centre and its outskirts. From my own experience and what I have observed over the years, this difference is not large, it is on average 2-3ºC. However, sometimes these differences can be much larger or smaller, due to the fact that Tricity is situated between the sea and the moraine hills. Geographic conditions make the climate very variable and unpredictable. The city itself is quite green, crossed by large forests. 3) As the urban heat island is not a big problem in the Tricity, it is even very convenient for the locals as the winters are less severe, and the warmer summer attracts more tourists to the sea. Although new housing estates do not glom much importance to greenery, large residential buildings are built and all green areas are filled with concrete, so I would recommend putting more green lanes and squares that would improve the microclimate and, above all, draining rainwater system. 4) I do not know anything about city policies that would reduce the urban heat island. More and more retention tanks are being created to support the rainwater collection system. I think that retention tanks can also have a positive impact on the reduction of the urban heat island.