What is drought?

Picture of cracked earth
2012 drought in Oxfordshire, UK.
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CEH has a very informative blog post: What is a drought? written by Terry Marsh.

Anne Van Loon’s paper Hydrological drought explained provides more detailed explanations of the subject. She describes of the various ways in which drought can be classified:

  1. Meteorological drought
  2. Soil moisture drought
  3. Hydrological drought
  4. Socioeconomic drought.

Van Loon, A. F. (2015), Hydrological drought explained. WIREs Water, 2: 359–392. doi:10.1002/wat2.1085