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En-en adult card 30 droughts: Difference between revisions
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== Card #30: Droughts == | |||
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[[File:En-en_adult_card_30_front.png|400px]] | |||
The disruption of the water cycle can both increase and decrease rainfall. A lack of rain can cause drought. Droughts are likely to become more | |||
frequent in the future. | |||
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== Explanation == | == Explanation == | ||
A drought is a period of abnormal water shortage. A meteorological drought is when there is a drop in rainfall, and an agricultural drought is when soil moisture drops abnormally, affecting crop production. A mega-drought is a persistent and widespread drought that lasts much longer than normal (usually a decade or more)<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SummaryVolume_FINAL_FRENCH.pdf#page=216 Glossary for Report 5, Working Group 1](French)</ref>. | A drought is a period of abnormal water shortage. A meteorological drought is when there is a drop in rainfall, and an agricultural drought is when soil moisture drops abnormally, affecting crop production. A mega-drought is a persistent and widespread drought that lasts much longer than normal (usually a decade or more)<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SummaryVolume_FINAL_FRENCH.pdf#page=216 Glossary for Report 5, Working Group 1](French)</ref>. | ||
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== Other possible links== | == Other possible links== | ||
===Other consequences=== | ===Other consequences=== | ||
* [[En-en adult card 12 carbon sinks|Carbon sinks]] If a lack of rain occurs while plants are growing, there is less photosynthesis and therefore a reduction in capacity of the carbon sink. In Europe, in 2018, carbon sinks declined by 18%<ref>https://www.icos-cp.eu/ | * [[En-en adult card 12 carbon sinks|Carbon sinks]] If a lack of rain occurs while plants are growing, there is less photosynthesis and therefore a reduction in capacity of the carbon sink. In Europe, in 2018, carbon sinks declined by 18%<ref>https://www.icos-cp.eu/science-and-impact/science-contribution/success-stories/drought</ref>. | ||
==To go further== | ==To go further== | ||