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Sauyin yanayi
From Wikipedia, the free encyclopedia
Sauyin yanayi, ya haɗa da duk bambance-bambance a cikin yanayin dake dadewa fiye da abubuwan da suka faru na kowanne yanayi, yayin da kalmar canjin yanayi kawai tana nufin wadannan bambance-bambancen da ke dawwama na tsawon lokaci, yawanci shekarun da suka gabata ko fiye. Canjin yanayi na iya nufin kowane lokaci a tarihin duniya, amma yanzu ana amfani da kalmar don kwatanta wasauyin yanayi na zamani, wanda aka fi sani da dumamar yanayi. Tun bayan Juyin juya hali na yanayin, yana ƙara shafar ayyukan ɗan adam.[1]
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Tsarin yanayi yana karɓar kusan dukkan ƙarfinsa daga rana kuma yana haskaka makamashi zuwa sararin samaniya. Ma'auni na makamashi mai shigowa da mai fita da hanyar makamashi ta tsarin yanayi shine kasafin makamashi na duniya. Lokacin da makamashi mai shigowa ya fi makamashi mai fita girma, kasafin makamashi na duniya yana da kyau kuma tsarin yanayi yana dumama. Idan ƙarin makamashi ya fita, kasafin makamashi mara kyau ne kuma Duniya tana samun sanyi.
Ƙarfin da ke tafiya a cikin tsarin yanayi na duniya yana samun magana a cikin yanayi, ya bambanta akan ma'auni na yanki da lokaci. Matsakaicin tsayin lokaci da sauye-sauyen yanayi a cikin yanki sune yanayin yankin. Irin waɗannan sauye-sauye na iya zama sakamakon "saɓanin ciki", lokacin da tsarin yanayi ya shafi sassa daban-daban na tsarin yanayi ya canza rarraba makamashi. Misalai sun haɗa da sãɓãwar launukansa a cikin kwalayen teku kamar Pacific decadal oscillation da Atlantic multidecadal oscillation . Canjin yanayi kuma na iya haifarwa daga tilastawa waje, lokacin da abubuwan da suka faru a wajen sassan tsarin sauyin yanayi suka haifar da canje-canje a cikin tsarin. Misalai sun haɗa da canje-canje a fitowar hasken rana da volcanism.
Canjin yanayi yana da sakamako ga canje-canjen matakin teku, rayuwar shuka, da ɓarnawar taro; yana kuma shafar al'ummomin mutane.