Duniya yanki ne mai jujjuyawa kuma yanayin duniya, wato yanayin yanayin duniya shima ba shi da kwanciyar hankali. Ba abin mamaki ba ne, akwai tatsuniyoyi da yawa game da abin da ke faruwa a cikin yanayi, a cikin teku da kuma a cikin ƙasa. Bari mu ga abin da masana kimiyya suka ce game da wasu da'awar dumamar yanayi.
Tun kafin bayyanar SUVs da fasahohin da ke samar da iskar gas, yanayin duniya yana canzawa. ’Yan Adam ba su da alhakin dumamar yanayi a yau.
Sauyin yanayi a da ya nuna cewa yanayin mu ya dogara da yawan makamashin da ke shigowa da fita. Idan akwai zafi fiye da yadda duniya za ta iya bayarwa, matsakaicin zafin jiki zai tashi.
Duniya a halin yanzu tana fuskantar rashin daidaituwar makamashi saboda hayakin CO2, saboda haka tasirin greenhouse. Canje-canjen yanayi a baya yana tabbatar da hankalinsa ga CO2.
Wane irin dumamar yanayi muke magana akai idan akwai dusar ƙanƙara a cikin yadi na. Ta yaya tsananin hunturu zai yiwu a fuskantar dumamar yanayi?
Yanayin zafin iska a wani yanki ba shi da alaƙa da yanayin ɗumamar yanayi na dogon lokaci. Irin wannan sauye-sauyen yanayi ne kawai ke rufe sauye-sauye a yanayin gaba daya. Don fahimtar babban hoto, masana kimiyya sun dogara da halayen yanayi na dogon lokaci. Duban bayanan shekarun da suka gabata, zaku iya ganin cewa an yi rikodin rikodi a cikin zafin jiki kusan sau biyu sau da yawa kamar ƙasa.
Dumamar duniya ta tsaya kuma duniya ta fara sanyi.
Lokacin 2000-2009 ya kasance mafi zafi bisa ga lura da masana yanayi. Akwai ƙaƙƙarfan guguwar dusar ƙanƙara da sanyi mara kyau. Dumamar duniya ta dace da yanayin sanyi. Don yanayin, yanayin dogon lokaci, shekarun da suka gabata, suna da mahimmanci, kuma waɗannan abubuwan, da rashin alheri, suna nuna ɗumamar yanayi a duniya.
A cikin ɗaruruwan shekaru da suka wuce, ayyukan hasken rana, gami da adadin wuraren da rana, ya ƙaru, sakamakon haka, duniya ta yi zafi.
A cikin shekaru 35 da suka gabata, rana ta yi sanyi kuma yanayin duniya ya yi zafi, in ji masana kimiyya. A cikin karnin da ya gabata, ana iya danganta wasu karuwar zafin duniya da ayyukan hasken rana, amma wannan lamari ne maras muhimmanci.
A wani bincike da aka buga a mujallar Atmospheric Chemistry and Physics a watan Disambar 2011, an ce ko da a lokacin dogon hutun da ake yi na ayyukan hasken rana, duniya na ci gaba da yin dumi. An gano cewa saman duniya ya tara watts 0.58 na wuce gona da iri a kowace murabba'in mita, wanda aka sake sake shi cikin sararin samaniya a tsakanin 2005-2010, lokacin da aikin hasken rana ya yi ƙasa.
До сих пор нет консенсуса относительно того, имеет ли место потепление на планете.
Kimanin kashi 97% na masu binciken yanayi sun yarda cewa dumamar yanayi na faruwa ne sakamakon ayyukan dan Adam. A cewar shafin yanar gizo na Skeptical Science, a fannin binciken yanayi (kazalika da taimakon ilimin kimiyya), masana kimiyya sun daina cece-kuce kan abin da ke haddasa dumamar yanayi, kuma kusan dukkaninsu sun cimma matsaya.
Rick Santorum ya taƙaita wannan muhawara a cikin labarai lokacin da ya ce, “Shin carbon dioxide yana da haɗari? Tambayi tsire-tsire game da shi.
Duk da yake gaskiya ne cewa tsire-tsire suna shan carbon dioxide ta hanyar photosynthesis, carbon dioxide yana da mummunar ƙazanta kuma, mafi mahimmanci, tasirin greenhouse. Gas kamar CO2 ne ke kama makamashin thermal da ke fitowa daga duniya. A gefe guda, wannan gaskiyar tana kiyaye zafi a duniya, amma idan tsarin ya yi nisa, sakamakon shine dumamar yanayi.
Yawancin abokan hamayya suna nuna tarihin ɗan adam a matsayin shaida cewa lokacin dumi yana da kyau ga ci gaba, yayin da sanyi ya haifar da mummunan sakamako.
Masana yanayin yanayi suna jayayya cewa duk wani sakamako mai kyau ya zarce mummunan tasirin dumamar yanayi kan aikin gona, lafiyar ɗan adam, tattalin arziki da muhalli. Misali, bisa ga bincike, yanayin zafi zai kara yawan lokacin noman noma a Greenland, wanda ke nufin karancin ruwa, yawan gobarar daji da kuma fadada hamada.
Ледовое покрытие Антарктиды расширяется, вопреки утверждениям о таяние льдов.
Akwai bambanci tsakanin kankarar kasa da ta teku, in ji masana kimiyya. Masanin yanayi Michael Mann ya ce: “A game da tudun kankara na Antarctic, ana samun tarin ƙanƙara saboda iska mai ɗumama da ruwan sanyi, amma ƙarancin ƙanƙara a gefen tekun saboda ɗumamar tekunan kudancin. Wannan bambance-bambancen (asara net) ana hasashen zai zama mara kyau a cikin shekaru da yawa." Aunawa sun nuna cewa matakan teku sun riga sun tashi saboda narkar da ruwan kankara.