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Diurnal cycle

May 05, 2023

A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full rotation of the planet Earth around its axis.[1] Earth's rotation causes surface 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]

Earth's rotation relative to the Sun causes the 24-hour day/night cycle.

Climate and atmosphere

 
Diurnal variation of air temperature (blue) lag by 3 to 4 hours behind insolation at solar noon (red).

In climatology, the diurnal cycle is one of the most basic forms of climate patterns, including variations in diurnal temperature and rainfall.[1] Diurnal cycles may be approximately sinusoidal or include components of a truncated sinusoid (due to the Sun's rising and setting) and thermal relaxation (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 photosynthesis in plants[3] and 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

  1. ^ a b c Betts, A (2015). "BOUNDARY LAYER (ATMOSPHERIC) AND AIR POLLUTION | Diurnal Cycle". Diurnal Cycle. Encyclopedia of Atmospheric Sciences (2nd ed.). pp. 319–23. doi:10.1016/B978-0-12-382225-3.00135-3. ISBN 9780123822253.
  2. ^ Hartmann, Dennis L. (1994). "The Energy Balance of the Surface". International Geophysics. 56: 81–114. doi:10.1016/S0074-6142(08)60561-6. ISSN 0074-6142.
  3. ^ a b Matthews, Jack S.A.; Vialet-Chabrand, Silvere R.M.; Lawson, Tracy (2017). "Diurnal Variation in Gas Exchange: The Balance between Carbon Fixation and Water Loss". Plant Physiology. 174 (2): 614–623. doi:10.1104/pp.17.00152. ISSN 0032-0889. PMC 5462061. PMID 28416704.
  4. ^ Wirz-Justice, Anna (2008). "Diurnal variation of depressive symptoms". Dialogues in Clinical Neuroscience. 10 (3): 337–343. doi:10.31887/DCNS.2008.10.3/awjustice. ISSN 1294-8322. PMC 3181887. PMID 18979947.
  5. ^ G.K., Sims; Dunigan, E.P. (1984). "Diurnal and seasonal variations in nitrogenase activity (C2H2 reduction) of rice roots". Soil Biology and Biochemistry. 16 (1): 15–18. doi:10.1016/0038-0717(84)90118-4. ISSN 0038-0717.


 

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May 05, 2023
diurnal, cycle, diurnal, cycle, diel, cycle, pattern, that, recurs, every, hours, result, full, rotation, planet, earth, around, axis, earth, rotation, causes, surface, temperature, fluctuations, throughout, night, well, weather, changes, throughout, year, diu. A diurnal cycle or diel cycle is any pattern that recurs every 24 hours as a result of one full rotation of the planet Earth around its axis 1 Earth s rotation causes surface 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 Earth s rotation relative to the Sun causes the 24 hour day night cycle Contents 1 Climate and atmosphere 2 Biological effects 3 Semi diurnal cycle 4 See also 5 ReferencesClimate and atmosphere Edit Diurnal variation of air temperature blue lag by 3 to 4 hours behind insolation at solar noon red In climatology the diurnal cycle is one of the most basic forms of climate patterns including variations in diurnal temperature and rainfall 1 Diurnal cycles may be approximately sinusoidal or include components of a truncated sinusoid due to the Sun s rising and setting and thermal relaxation 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 EditDiurnal cycles of light and temperature can result in similar cycles in biological processes such as photosynthesis in plants 3 and 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 EditA 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 EditChronotype Circadian rhythm Diel vertical migration DiurnalityReferences Edit a b c Betts A 2015 BOUNDARY LAYER ATMOSPHERIC AND AIR POLLUTION Diurnal Cycle Diurnal Cycle Encyclopedia of Atmospheric Sciences 2nd ed pp 319 23 doi 10 1016 B978 0 12 382225 3 00135 3 ISBN 9780123822253 Hartmann Dennis L 1994 The Energy Balance of the Surface International Geophysics 56 81 114 doi 10 1016 S0074 6142 08 60561 6 ISSN 0074 6142 a b Matthews Jack S A Vialet Chabrand Silvere R M Lawson Tracy 2017 Diurnal Variation in Gas Exchange The Balance between Carbon Fixation and Water Loss Plant Physiology 174 2 614 623 doi 10 1104 pp 17 00152 ISSN 0032 0889 PMC 5462061 PMID 28416704 Wirz Justice Anna 2008 Diurnal variation of depressive symptoms Dialogues in Clinical Neuroscience 10 3 337 343 doi 10 31887 DCNS 2008 10 3 awjustice ISSN 1294 8322 PMC 3181887 PMID 18979947 G K Sims Dunigan E P 1984 Diurnal and seasonal variations in nitrogenase activity C2H2 reduction of rice roots Soil Biology and Biochemistry 16 1 15 18 doi 10 1016 0038 0717 84 90118 4 ISSN 0038 0717 This climatology meteorology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Diurnal cycle amp oldid 1146973949, wikipedia, wiki, book, books, library,

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