Inara yawan matsakaicin yanayin duniya yana haifar da narkewar glaciers a duniya. Ba da daɗewa ba an san cewa babban kankara ya faɗo daga kangon Grey, a cikin Torres del Paine. Gangar kankara tana da girman mitoci 350 × 380.
Yaya Grey glacier ta fuskar ƙaruwar zafin jiki?
Achaddamar da wani toshe
Ginin da aka cire daga Grey Glacier yana ƙara adadin kankara da ta rasa a cikin shekaru goma sha biyu da suka gabata. Kankara ya rasa jimillar tsawan cubic mita 900 a cikin shekaru goma sha biyu kawai.
Likita Raúl Cordero ƙwararren masanin bincike ne a canjin yanayi da ilimi a Jami'ar Santiago kuma ya tabbatar da cewa keɓance wannan toshewar kankara zai haifar da matsaloli na gaske game da kewayawa. Kari akan haka, ya tabbatar da cewa Grey glacier bai fi wadanda aka rasa a Patagonia girma ba.
Ci gaba da asarar dusar kankara ya zama halin da ba za a iya sauyawa ba sakamakon dumamar yanayi. Yayinda matsakaita yanayin zafi ke tashi, adadin kankara da ke narkewa ya fi yawa, yayin da yanayi mai zafi na daɗewa.
"Haɗarin da ke cikin matsakaici da dogon lokaci ga ƙasashen bakin teku kamar Chile shi ne hasarar kankara ta ci gaba, abin da ke sa matakin teku ya tashi. A karshen karnin, karuwar da ake tsammani, a mafi kyawu, zai zama mita daya sama da matakin teku kuma hakan yana da yawa ", in ji mai binciken.
Dole ne a yi la'akari da cewa wuraren da tasirin tasirin narkewar glaciers ya fi shafa su ne biranen bakin teku. Adadin ruwan da aka ajiye a cikin kankara yana da yawa kuma idan ya fara narkewa cikin sauri kamar yadda yake a yau, yana haifar da mummunan ambaliyar ruwa.
Yayinda kankara ke narkewa, ba wai kawai garuruwan da ke gabar teku za su yi ambaliya ba, har ma da hauhawar ruwan zai shafi su. Wannan karuwar ba hatsari ba ne kawai saboda akwai karin ruwa, amma, a mafi yawan lokuta, suna iya shafar gabar teku sosai lokacin da hadari da iska suka yi yawa saboda yawan ruwa a cikin teku da tekuna.
“Matsalar da ake fuskanta a duniya ita ce, yanayin kankara ba ta daidaita. Wannan yana nufin, rashin daidaituwa: sun rasa karin kankara saboda narkewa ko a cikin yanayin dusar kankara fiye da yadda suke samu saboda tarawar dusar kankara ”, in ji Cordero.
Yana da haɗari sosai cewa ƙankunan duniya suna narkewa, tunda, bayan hawan matakin teku da ambaliyar ruwa, kankara suna samar da maɓallin mahimmanci a cikin ayyukan halittun da ke tattare da shi.
Dumamar yanayi
Yayin da dumamar yanayi ke ci gaba, bukatar ta fi tasowa don rage tasirin ta fiye da kokarin dakatar da ita. Illolin da ke haifar da canjin yanayin duniya sun riga sun tabbata kuma ba za a iya dakatar da su ba. Abinda yakamata ayi shine a rage tasirin canjin yanayi ta hanyar rage fitar da hayaki mai gurbata muhalli ta hanyar canjin kuzari dangane da kuzarin sabuntawa.
Grey glacier shine ɗayan mafi girma a Patagonia, amma ba shine wanda aka rasa mafi yawa ba. A wannan yankin akwai raguwa na zuwa kilomita 13 cikin shekaru talatin kawai.
"Babu wata alama ta canjin yanayi wacce ba ta saurin faduwa. Matsayin teku yana tashi da sauri da sauri; glaciers suna narkewa cikin sauri da sauri; Greenland da Antarctica suna ta kara yin asara; muna da canje-canje masu mahimmanci a cikin jerin abubuwan da suka faru kamar matsanancin hadari, mahaukaciyar guguwa, tsananin fari, raƙuman zafi; Kuma duk wannan, a zahiri, alama ce ta hanzarin canjin yanayi ”, in ji Cordero.
Narkewar dusar kankara yana hanzarta canjin yanayi, tunda tunda akwai ƙarancin dusar ƙanƙara, ƙarancin hasken rana yana bayyana kuma, sabili da haka, ana samun ƙarin zafin rana, wanda ke ƙara yanayin zafi sosai.