Diurnal cycle
A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full
temperature fluctuations throughout the day and night, as well as weather changes throughout the year. The diurnal cycle depends mainly on incoming solar radiation.[2]
Climate and atmosphere
In
Newton cooling) at night.[1] The diurnal cycle also has a great impact on carbon dioxide levels in the atmosphere, due to processes such as photosynthesis and cellular respiration.[3]
Biological effects
Diurnal cycles of light and temperature can result in similar cycles in biological processes, such as
clinical depression in humans.[4] Plant responses to environmental cycles may even induce indirect cycles in rhizosphere microbial activities, including nitrogen fixation.[5]
Semi-diurnal cycle
A semi-diurnal cycle refers to a pattern that occurs about every twelve hours or about twice a day. Often these can be related to lunar tides, in which case the interval is closer to 12 hours and 25 minutes.
See also
References
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