Canjin yanayi an san shi yana ƙaruwar yanayin zafi a duniya. Wannan yana haifar da dusar kankara da sandunan narkewa. Misali bayyananne na wannan faruwa shine karayar da ta faru a cikin Grey glacier, wanda yake a cikin Filin shakatawa na Torres del Paine a Chile.
Narkewar kankara yana da mummunan sakamako ga matakin teku kuma, don haka, ga biranen bakin teku. Waɗanne abubuwa tasirin Grey glacier zai iya haifarwa?
Canjin yanayi da narkewar kankara
Kafin a fara kan batun Gray glacier, ƙaramin kuskuren fahimta game da narkewar kankararriyar kankara da hauhawar matakan teku ana buƙatar sharewa. Gaskiya ne cewa wannan yana haifar da hauhawar matakin teku, amma ba ya aiki ta wannan hanyar. Ya kamata a tuna da cewa dusar kankara da ke yawo a cikin teku, kamar wadanda suke a Pole ta Arewa, tuni sun riga sun mamaye kara a cikin ruwa, har ma sun fi wanda zai zauna lokacin da ya dawo cikin yanayin ruwa. Narkewar Pole ta Arewa ba zai sa matakin teku ya tashi ba.
A gefe guda kuma, dusar kankara a Antarctica suna saman wani shiryayyen nahiya ne, don haka idan suka narke, yawan ruwan da tekun zai dauke zai karu.
Grey glacier karaya
A wannan makon wani babban guntun kankara ya fashe wanda ya fasa gilashin Grey. Ginin kankara yana da girma na 350x380m kuma, tsawon shekaru 12, yana ta rasa ƙarar da tayi daidai da mita 900.
Canjin yanayi shine babbar matsalar duniya da bil'adama ke fuskanta. 78% na Chilean Sun yi amannar cewa ya kamata a fifita yakin da ake da canjin yanayi sama da bunkasar tattalin arzikin kasar.
“Canjin yanayi yana faruwa yanzu kuma yana faruwa a nan. Wannan wani abu ne da 'yan kasar ta Chile suka bayyana a sarari, "in ji shugabar a lokacin da ta bude dandalin masu unguwanni kan canjin yanayi, wanda kungiyar' Chilean Network of Municipalities on Climate Change 'da kungiyar masu zaman kansu ta Adapt Chile suka shirya.
Kodayake mutane da yawa ba su dauki wannan da muhimmanci ba, yana da mahimmanci gwamnatocin kananan hukumomi su dauki matakan rage sauyin yanayi ta yadda, daga na gida, zuwa na duniya. Actionsananan ayyuka a cikin iyakantaccen yanki sune waɗanda suke aiki a ƙarshe cikin duniya.
Me majalisar birni za ta iya yi game da canjin yanayi?
Mai mulkin Chile, Michelle Bachelet, ya ƙaddamar da taron wanda aka tsara shi don tallata ayyukan da ƙananan hukumomi zasu iya aiwatarwa don dakatar da canjin yanayi a ƙimar gida. Manufofin da aka ɗaga yayin taron ana iya sanya su, tsara su da aiwatar da su a cikin ƙananan hukumomin Chile.
Wannan taron zai magance mahimman batutuwan da suka shafi duniya baki ɗaya, kamar sa ido akan Yarjejeniyar Paris, Ayyuka don daidaitawa zuwa canjin yanayi da bin ka'idodi na Agenda Action Agenda.
Fassara kamar ta Grey Glacier zai kasance wani ɓangare na yanayin zafin duniya wanda ba makawa kuma ba mai iyawa. Kamar yadda aka ambata a baya, babban abin da wannan lamari na hauhawar ruwan teku ya shafa zai kasance biranen bakin teku ne saboda karuwar barazanar ambaliyar.
Mafi munin tasirin da karayar wannan glacier take dashi shine wahalar da yake haifarwa a cikin kewayawa.
A cikin dukkanin kankara na duniya ana iya samun daidaito mara kyau. Wannan yana nufin, Ana asarar ƙarin kankara ta narkewa fiye da yadda ake samu ta taruwar dusar ƙanƙara. Wannan yanayin ba wai yana shafar ruwan ƙwallon Grey ba ne kawai, amma akwai kankara da suka ɓace har zuwa kilomita goma sha uku a cikin ƙasa da shekaru talatin.
Wannan halin zai ci gaba a kowace shekara idan ba a daina ɗumamar yanayi ba.