This is the urban heat island,
where city temperatures can be significantly warmer than the surrounding rural regions.
The pair also examined whether white roofs — a technique of painting city roofs white to reflect heat — truly serve to
cool city temperatures.
In addition to
reducing city temperatures more during a heat wave, the researchers also found that cool roofs can decrease the intensity of the urban heat island effect more during extreme conditions.
These distinguishing elements can
cause city temperatures to reach greater relative heights — a phenomenon known as the urban «heat island» effect.
Now, they've moved on to Southern California, where they'll trade Friday's 31 - degree
Iowa City temperature for a balmy 63 - degree kickoff.
FOREIGN men are in high demand particularly in the capital region and other
university cities The temperature in Helsinki is currently hovering just above zero, but is set to drop to as low as -8 C next week, with clouds and drizzle to boot.
These combined effects can
cause city temperatures to rise as much as an extra 10 degrees Fahrenheit in places like Phoenix, Arizona.
In
the city the temperatures can change overnight.
Even in the early 19th century, it was already noticed
that city temperatures were artificially warmer than the surrounding countryside: