Sauyin yanayi a Amurka
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Canjin yanayi ya haifar da dumama Amurka da 2.6 ° F (1.4 ° C) tun 1970.[3]Yanayi na Amurka yana canzawa a hanyoyin da suka yadu kuma sun bambanta tsakanin yankuna.[4][5] Daga 2010 zuwa 2019, Amurka ta fuskanci shekaru goma mafi zafi a rubuce. Abubuwan da suka faru na yanayi, nau'o'in mamayewa, ambaliyar ruwa da fari suna ƙaruwa.[6][7][8] Tasirin canjin yanayi a kan guguwa na wurare masu zafi da hauhawar matakin teku suma yana shafar yankuna na kasar.
Sauyin yanayi a Amurka | |
---|---|
climate change by country or territory (en) | |
Bayanai | |
Ƙaramin ɓangare na | canjin yanayi |
Ƙasa | Tarayyar Amurka |
Gabaɗaya tun 1850, Amurka ta fitar da rabo mafi girma fiye da kowace ƙasa ta iskar gas mai ɗumi wanda ke haifar da canjin yanayi na yanzu, tare da wasu 20% na jimlar carbon dioxide ta duniya kadai.[9]A halin yanzu US fitarwa ga kowane mutum yana daga cikin mafi girma a duniya.[10] An gabatar da manufofi daban-daban na sauyin yanayi na jihohi da na tarayya, kuma Amurka ta tabbatar da Yarjejeniyar Paris duk da janyewar ɗan lokaci. A cikin 2021, kasar ta sanya burin rage fitar da iskar gas ta shekara-shekara zuwa shekara ta 2030.[11]
Canjin yanayi yana da tasiri sosai ga muhalli da al'umma na Amurka. Wannan ya haɗa da tasirin noma, tattalin arziki, lafiyar ɗan adam da 'yan asalin ƙasar, kuma ana ganinsa a matsayin barazanar tsaron ƙasa.[12] Jihohin da ke fitar da karin carbon dioxide ga kowane mutum kuma suna gabatar da manufofi don adawa da matakin yanayi gabaɗaya suna fuskantar tasiri mafi girma.[13][14] 2020 shekara ce ta tarihi ga bala'o'in yanayi da yanayi na biliyan daloli a Amurka.
Kodayake a tarihi batun da ba na jam'iyya ba ne, canjin yanayi ya zama mai kawo rigima da rarrabuwar siyasa a kasar a cikin 'yan shekarun nan. Kamfanonin mai sun san tun daga shekarun 1970s cewa kone mai da iskar gas na iya haifar da dumamar yanayi amma duk da haka sun ba da kuɗin masu musun shekaru da yawa.[15][16] Duk da goyon bayan wata yarjejeniya ta kimiyya, tun daga shekarar 2021 kashi ɗaya bisa uku na Amurkawa sun musanta cewa canjin yanayi da mutum ya haifar ya wanzu[17] duk da cewa yawancin suna damuwa ko damuwa game da batun.