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En-en adult card 16 melting of glaciers: Difference between revisions
En-en adult card 16 melting of glaciers (view source)
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== Definition== | |||
== Definition == | |||
A glacier is a large body of ice and snow. It forms because the snow in an area does not all melt in summer […] A glacier only moves about 50 metres (160 ft) per year. New snowfalls replace the parts that flow away<ref>[https://simple.wikipedia.org/wiki/Glacier Wikipedia simple definition]</ref>. | A glacier is a large body of ice and snow. It forms because the snow in an area does not all melt in summer […] A glacier only moves about 50 metres (160 ft) per year. New snowfalls replace the parts that flow away<ref>[https://simple.wikipedia.org/wiki/Glacier Wikipedia simple definition]</ref>. | ||
The melting of a glacier will be referred to here when the total mass of ice has decreased over the period under consideration, regardless of the processes involved. | The melting of a glacier will be referred to here when the total mass of ice has decreased over the period under consideration, regardless of the processes involved. | ||
== | == Correction== | ||
===Causes=== | |||
* [[En-en_adult_card_14_energy_budget|Energy Budget]] | |||
=== Consequences === | === Consequences === | ||
[[En-en adult card 22 sea level rise|Sea level rise]] A melting of 100 gigatons of ice per year is equivalent to about 0.28 mm per year of mean sea level rise<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SPM_brochure_fr.pdf IPCC Report 2013 - Summary for Policymakers p7 (French)]</ref>. Thus, 15 to 35% of sea level rise is linked to the melting of glaciers, according the IPCC scenarios. 30% to 35% is linked to the expansion of water. The remainder is linked to the melting of the ice caps. | [[En-en adult card 22 sea level rise|Sea level rise]] A melting of 100 gigatons of ice per year is equivalent to about 0.28 mm per year of mean sea level rise<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SPM_brochure_fr.pdf IPCC Report 2013 - Summary for Policymakers p7 (French)]</ref>. Thus, 15 to 35% of sea level rise is linked to the melting of glaciers, according the IPCC scenarios. 30% to 35% is linked to the expansion of water. The remainder is linked to the melting of the ice caps. | ||
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Their disappearance could be catastrophic for cities located in valleys watered by rivers flowing down from the surrounding mountains and for freshwater fauna. Glacier meltwater also increases in importance during [[En-en adult card 30 droughts|droughts]] and [[En-en adult card 36 heat waves|heat waves]]. | Their disappearance could be catastrophic for cities located in valleys watered by rivers flowing down from the surrounding mountains and for freshwater fauna. Glacier meltwater also increases in importance during [[En-en adult card 30 droughts|droughts]] and [[En-en adult card 36 heat waves|heat waves]]. | ||
== | == Explanation of the links == | ||
=== Other consequences === | === Other consequences === | ||