A yau kuma tare da hujjojin da ake dasu kan canjin yanayi, har yanzu akwai mutanen da suke musantawa. Mutanen da basu yarda da cewa akwai canjin yanayi ba. Ba tare da ci gaba ba, muna da Shugaban Amurka, Donald Trump, wanda ya musanta wanzuwar canjin yanayi a duniya. Yana ganin kirkirar Sinawa ne don samun gasa.
Abu ne na al'ada cewa a wasu yankuna na duniya ana iya yin wannan muhawara. Tunda bisa canjin yanayi, duniyar tamu tana dumama. Koyaya, yankuna da yawa na duniyar suna fuskantar sanyin hunturu, suna karya rikodin don ƙarancin yanayin zafi. Idan haka ne, Shin canjin yanayi yana wanzu da gaske? Me yasa muke kuskure wajen musun wanzuwar?
Shaidun da ke nuna kamar babu canjin yanayi
97% na ƙungiyar masana kimiyya sun tabbatar da kasancewar canjin yanayin duniya. Don wannan, kodayake ana lura da yanayin sanyi a wasu yankuna na duniya, amma, ba daidai ba ne a yi amfani da wannan shaidar don musun kasancewar canjin yanayi da ya shafi duniya baki ɗaya.
Abin mamaki na El Niño shine babban jarumi na duk waɗannan abubuwan canjin yanayin da zasu iya rikita duniya baki ɗaya. Ari ko lessasa, yana aiki a cikin zagaye na shekaru huɗu kuma ana gano shi a yankin yankin yammacin yammacin Kudancin Amurka. Yanayin dumi daga raƙuman ruwan teku yana shafar iskar kasuwanci a duk duniya kuma wannan shine dalilin da yasa za'a iya haifar da guguwa mai tsayi a yankuna kamar Turai. Wannan shine bayanin dalilin da yasa muke samun hunturu da sanyi, ba wai don babu canjin yanayi ba.
Akwai kuma wasu shaidun da za su iya haifar da musun canjin yanayi. Yana da game na ci gaban kankara da Antarctica ta fuskanta a cikin recentan shekarun nan. Wannan shi ne cikakken akasin abin da ke faruwa a Arctic, wanda ke da ƙarancin kankara. Bayanin wannan shi ne, Antarctica, saboda matsayinta, yana kewaye da iska mai karfi da guguwar teku da ke kare ta. Ta wannan hanyar an fi samun mafaka daga tasirin waje na yanayin.
Tabbatar da canjin canjin gaskiya
Kodayake waɗannan shaidun da suka gabata na iya haifar mana da shakku game da wanzuwar canjin yanayin duniya, gaskiyar ta bambanta. A cikin 'yan shekarun nan, duniyar duniyar ta sami karuwar mummunan yanayi a cikin yanayin tun lokacin da matakan sifa suka fara tun a 1880.
Shekarar 2016 ita ce shekara mafi zafi a rikodin, inda 2015 da 2014 suka ɗauki matsayi na biyu da na uku bi da bi. A cewarsa Goungiyar Gwamnati don Canjin Yanayi (IPCC), matsakaicin zafin duniya ya karu da digiri 0,85 Celsius daga 1880 zuwa 2012.
Don haka, duk da cewa akwai lokutan sanyi a wasu yankuna na duniya, ba za mu iya kawai mai da hankali kan hakan ba. Dole ne mu binciki yanayin yanayin duniya baki daya. Akwai mutanen da suka yi nazari kan canjin yanayi da Duniya ta yi cikin tarihi kuma suna damuwa da wannan gaskiyar cewa canjin yanayi na yanzu wannan ba komai bane face jujjuyawar yanayi kuma dan Adam bai sa baki a ciki ba.
Gaskiya ne cewa yanayin duniya ya canza cikin tarihi, amma menene ya haifar da tunanin cewa ɗan adam ne ya haifar da hakan, shine saurin da wannan canjin yanayi yake faruwa. Wato, canje-canje a yanayin duniya a duk tarihin Duniyar sun faru ne ta hanyar tsarin halitta wadanda suka dauki miliyoyin shekaru suna faruwa. Koyaya, dumamar yanayi na yanzu yana faruwa a cikin shekaru 150. Wannan saboda yawanci zuwa hayaki mai gurbata muhalli daga ayyukan tattalin arzikinmu kuma shaidar hakan shine yawan karatu da ilimin da muke dasu game da halayen wadannan gas din.
Har yanzu akwai sauran shaidar canjin yanayi da za mu gani a rubutu na gaba.