Following the urban heat island profile from rural areas to a typical downtown urban area, which of the following is true?
1) The temperature decreases as you move from rural areas to a typical downtown urban area.
2) The temperature remains constant as you move from rural areas to a typical downtown urban area.
3) The temperature increases as you move from rural areas to a typical downtown urban area.
4) The temperature fluctuates randomly as you move from rural areas to a typical downtown urban area.