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• Variations in meteorological parameters such as temperature and relative humidity over the course of a day which result from the rotation of the Earth about its axis and the resultant change in incoming and outgoing radiation.

  NOAA National Weather Service - Cite This Source - This Definition
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  Cite Definition for Diurnal Cycles

  American Psychological Association (APA)

  Diurnal Cycles. (n.d.). National Weather Service Glossary. Retrieved June 30, 2022, from website: http://www.expertglossary.com/definition/diurnal-cycles.

  Chicago Manual of Style (CMS)

  Diurnal Cycles. www.weather.gov. National Weather Service Glossary. NOAA National Weather Service. http://www.expertglossary.com/definition/diurnal-cycles (accessed: June 30, 2022).

  Modern Language Association (MLA)

  "Diurnal Cycles." National Weather Service Glossary. NOAA National Weather Service. 30 June. 2022 http://www.expertglossary.com/definition/diurnal-cycles.

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