Glossary: V

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  1. Comparing a climate model's predictions with observations of the real climate, in order to test the reliability and accuracy of the model. The most obvious way to test a climate model is to use it to analyze past events, and then see whether its...
  2. A physical quantity that has both a magnitude and a direction and that adds like displacement; velocity, acceleration, and force are prime examples. Source: NASA (http://earthobservatory.nasa.gov/Glossary)
  3. A vector-borne disease is one in which the pathogenic microorganism is transmitted from an infected individual to another individual by an arthropod or other agent, sometimes with other animals serving as intermediary hosts. The transmission depends...
  4. That part of the electromagnetic spectrum to which the human eye is sensitive, between about 0.4 and 0.7 micrometers. Source: NASA (http://earthobservatory.nasa.gov/Glossary)
  5. A naturally occurring vent or fissure at the Earth's surface through which erupt molten, solid, and gaseous materials. Volcanic eruptions inject large quantities of dust, gas, and aerosols into the atmosphere. A major component of volcanic clouds is...
  6. The characteristics and circumstances of a community, system or asset that make it susceptible to the damaging effects of a hazard.