text: Chapter 7
  CLIMATE AND WEATHER
  7-3. Climate and weather can significantly impact military operations. Climate is the prevailing
  pattern of temperature, wind velocity, and precipitation in a specific area measured over a period of years.
  Weather describes the conditions at a specific place and time, and is only somewhat predictable. The
  following are military aspects of weather:
  • Visibility.
  • Wind.
  • Precipitation.
  • Cloud cover.
  • Temperature.
  • Humidity.
  CIVIL CONSIDERATIONS
  7-4. In urban terrain, manmade infrastructure, civilian institutions, attitudes and activities of civilian
  leaders, populations, and organizations also affect the environment (Figure 7-1).
  Figure 7-1. Classification of urban area by size.
  POPULATION
  7-5. Most urban environments have a significant population in both number and density. Civilians in
  the urban environment may pose significant threats, obstacles, and logistical support problems such as
  medical. They can also provide both support and information. Therefore, it is important to gain as much
  insight into the population as possible. This should start with the basics of demographic information: ethnic