Climate pattern

A climate pattern is any recurring characteristic of the climate. Climate patterns can last tens of thousands of years, like the glacial and interglacial periods within ice ages, or repeat each year, like monsoons.[1] A climate pattern may come in the form of a regular cycle, like the diurnal cycle or the seasonal cycle; a quasi periodic event, like El Niño; or a highly irregular event, such as a volcanic winter. The regular cycles are generally well understood and may be removed by normalization. For example, graphs which show trends of temperature change will usually have the effects of seasonal variation removed.

## Contents

* 1 Modes of variability
* 2 See also
* 3 References
* 4 Further reading

## Modes of variability

Main article: Earth:Climate oscillation

A mode of variability is a climate pattern with identifiable characteristics, specific regional effects, and often oscillatory behavior.[2] Many modes of variability are used by climatologists as indices to represent the general climatic state of a region affected by a given climate pattern.

Measured via an empirical orthogonal function analysis, the mode of variability with the greatest effect on climates worldwide is the seasonal cycle, followed by El Niño-Southern Oscillation, followed by thermohaline circulation.[3]

Other well-known modes of variability include:

* The Antarctic oscillation
* The Arctic oscillation
* The Atlantic multidecadal oscillation
* The Indian Ocean Dipole
* The Madden–Julian oscillation
* The North Atlantic oscillation
* The Pacific decadal oscillation
* The Pacific-North American teleconnection pattern
* The Quasi-biennial oscillation

## See also

* Atmospheric anomaly
* Climate change
* Climate model
* Global warming
* Teleconnection

## References

1. ↑ 100,000-year climate pattern linked to sun's magnetic cycles, according to a new analysis
2. ↑ "climate science_glossary". Archived from the original on 2009-08-13. https://web.archive.org/web/20090813160147/http://climatescience.gov/Library/sap/sap3-3/public-review-draft/sap3-3prd-gloss-acro.pdf.
3. ↑ Climate Trends Associated with Multi-decadal Variability of Atlantic Hurricane Activity

## Further reading

* Natural climate variability at the National Institute of Geophysics and Vulcanology (Bologna, Italy)

* v
* t
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Climate oscillations

Climate oscillations|

* Antarctic Circumpolar Wave
* Antarctic oscillation
* Arctic dipole anomaly
* Arctic oscillation
* Atlantic Equatorial mode
* Atlantic multidecadal oscillation
* Earth's axial tilt
* Bond event
* Cataclysmic pole shift hypothesis
* Dansgaard–Oeschger event
* Diurnal cycle
* Diurnal temperature variation
* El Niño–Southern Oscillation (El Niño \- La Niña)
* Equatorial Indian Ocean oscillation
* Glacial cycles
* Indian Ocean Dipole
* Madden–Julian oscillation
* Milankovitch cycles
* Monsoon
* North Atlantic oscillation
* North Pacific Oscillation
* Orbital forcing
* Pacific decadal oscillation
* Pacific–North American teleconnection pattern
* Quasi-biennial oscillation
* Seasonal lag
* Seasons
* Solar variability
* True polar wander

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