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2020-04-28T15:32:27Z

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energy>Jmdonev at 23:35, 18 February 2020

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- [[Category:Done 2016-04-30]]
+[[Category:Done 2020-02-29]]
-<onlyinclude>A '''climate threshold''' is a critical limit where a [[climate system]] responds drastically when exposed to an external [[climate forcing|forcing]], resulting in the system changing into a different stable state.</onlyinclude><ref name=IPCC_SREX>IPCC, 2012: Glossary of terms. In: Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation [Field, C.B., V. Barros, T.F. Stocker, D. Qin, D.J. Dokken, K.L. Ebi, M.D. Mastrandrea, K.J. Mach, G.-K. Plattner, S.K. Allen, M. Tignor, and P.M. Midgley (eds.)]. A Special Report of Working Groups I and II of the Intergovernmental Panel on Climate Change (IPCC). Cambridge University Press, Cambridge, UK, and New York, NY, USA, pp. 555-564.</ref> An analogy can be made to tipping a wine glass - if it tips too far from its standing state it will fall and spill the wine, leaving the glass in a stable state on its side. Thus a climate threshold is also referred to as a "tipping point". Climate threholds are an example of how the climate behaves in a [[nonlinearity|non-linear way]], often as a result of [[positive climate feedback]] mechanisms.
+<onlyinclude>A '''climate threshold''' is a critical limit where a [[climate system]] responds drastically when exposed to an external [[climate forcing|forcing]], resulting in the system changing into a different stable state.</onlyinclude><ref name=IPCC_SREX>IPCC, 2012: Glossary of terms. In: Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation [Field, C.B., V. Barros, T.F. Stocker, D. Qin, D.J. Dokken, K.L. Ebi, M.D. Mastrandrea, K.J. Mach, G.-K. Plattner, S.K. Allen, M. Tignor, and P.M. Midgley (eds.)]. A Special Report of Working Groups I and II of the Intergovernmental Panel on Climate Change (IPCC). Cambridge University Press, Cambridge, UK, and New York, NY, USA, pp. 555-564.</ref>
-The [[climate]] tends to respond to changes in a gradual way until it reaches a threshold. Once past this threshold, what is known as [[abrupt climate change]] begins to occur, where the climate's response to a forcing is much larger than the change in that [[climate forcing|forcing]].<Ref name=ipcc>IPCC. (Accessed July 4, 2016). ''Thresholds and Abrupt Climate Change'' [Online], Available: https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch8s8-thresholds-and.html</ref> Thresholds are important to study in order to test how well [[climate model]]s can simulate their effects.
+An analogy can be made to adding weight gradually onto a bar across a person's shoulders. At first, the person will be able to adapt to the added [[pressure]] on their body. As time passes and weight continues to be added, eventually the person won't be able to adapt any more and their body will give up, dropping the weight, leaving the person in a new steady state. Thus a climate threshold is also referred to as a "tipping point". In the analogy above, the "tipping point" will be the point at which the person can no longer hold the weight. In a climate scenario, the tipping point is when the changes become too much for the climate system to tolerate.  Climate thresholds are an example of how the climate behaves in a [[nonlinearity|non-linear way]].
 For example, a threshold exists with the increased amounts of freshwater flowing into the [[ocean]] from [[ice melt|melting ice]]. This freshwater is a potential forcing for abrupt climate changes; both [[rising sea level|sea levels]] and [[ocean circulation]]s could change drastically.<Ref>IPCC. (Accessed July 4, 2016). ''Rapid West Antarctic and/or Greenland Ice Sheet Collapse and Meridional Overturning Circulation Changes'' [Online], Available: https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch8s8-7-2-2.html</ref>
 ==References==
 {{reflist}}

Jmdonev: 1 revision imported: From the summer

2016-09-17T22:29:28Z

1 revision imported: From the summer

← Older revision	Revision as of 22:29, 17 September 2016
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Jmdonev at 20:26, 22 July 2016

2016-07-22T20:26:46Z

New page

[[Category:Done 2016-04-30]]
<onlyinclude>A '''climate threshold''' is a critical limit where a [[climate system]] responds drastically when exposed to an external [[climate forcing|forcing]], resulting in the system changing into a different stable state.</onlyinclude><ref name=IPCC_SREX>IPCC, 2012: Glossary of terms. In: Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation [Field, C.B., V. Barros, T.F. Stocker, D. Qin, D.J. Dokken, K.L. Ebi, M.D. Mastrandrea, K.J. Mach, G.-K. Plattner, S.K. Allen, M. Tignor, and P.M. Midgley (eds.)]. A Special Report of Working Groups I and II of the Intergovernmental Panel on Climate Change (IPCC). Cambridge University Press, Cambridge, UK, and New York, NY, USA, pp. 555-564.</ref> An analogy can be made to tipping a wine glass - if it tips too far from its standing state it will fall and spill the wine, leaving the glass in a stable state on its side. Thus a climate threshold is also referred to as a "tipping point". Climate threholds are an example of how the climate behaves in a [[nonlinearity|non-linear way]], often as a result of [[positive climate feedback]] mechanisms.

The [[climate]] tends to respond to changes in a gradual way until it reaches a threshold. Once past this threshold, what is known as [[abrupt climate change]] begins to occur, where the climate's response to a forcing is much larger than the change in that [[climate forcing|forcing]].<Ref name=ipcc>IPCC. (Accessed July 4, 2016). ''Thresholds and Abrupt Climate Change'' [Online], Available: https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch8s8-thresholds-and.html</ref> Thresholds are important to study in order to test how well [[climate model]]s can simulate their effects.

For example, a threshold exists with the increased amounts of freshwater flowing into the [[ocean]] from [[ice melt|melting ice]]. This freshwater is a potential forcing for abrupt climate changes; both [[rising sea level|sea levels]] and [[ocean circulation]]s could change drastically.<Ref>IPCC. (Accessed July 4, 2016). ''Rapid West Antarctic and/or Greenland Ice Sheet Collapse and Meridional Overturning Circulation Changes'' [Online], Available: https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch8s8-7-2-2.html</ref>

==References==
{{reflist}}

Climate threshold - Revision history

Jmdonev: 1 revision imported

energy>Jmdonev at 23:35, 18 February 2020

Jmdonev: 1 revision imported: From the summer

Jmdonev at 20:26, 22 July 2016