Uploaded on 2018-07-08 by Magnus Arni Skjold Magnusson

1. Dallas: 3.9°F on average hotter than surrounding rural areas, Cleveland 2.5° and Boise 3.1°. 2. I did some research on my city, Reykjvík and it seems no active measuring of UHI effects are conducted. The weather stations are placed on windy hills and thus difficult to see UHI effect in the city. Papers online mention that daytime “SUHI intensity in Reykjavik is very weak and sometimes exhibits a cold island“. (Razul et al. (2017), "A Review on Remote Sensing of Urban Heat and Cool Islands") I found one blog that suggest historical weather figures in Reykjavík have been reduced to counteract UHI effect.(https://notalotofpeopleknowthat.wordpress.com/2012/11/09/giss-double-up-on-reykjavik-temperatures/). My own research on weather stations over a five day period in Reykjavík and the surrounding areas show that aside from stations situated in relatively high altitudes, no measurable difference is in temprature between Reykjavík and the lowland surrounding rural areas. They are sometimes cooler or warmer by 1-2 degrees. 3. I would start by setting up weather stations in central urban locations (not on hilltops) in the city. Having lived there I know these sites are significantly warmer than the official weather figures. 4. I could find no active policies in Reykjavík addressing UHI.