Kamar yadda muka riga muka lissafa a lokuta da yawa, canjin yanayi yana haifar da hauhawar yanayin yanayin duniya wanda ya fi shafar yankin. Kowace shekara matsakaicin yanayin zafi yana da girma kuma yana haifar da mummunan lahani ga waɗancan tsirrai waɗanda ke da rauni. A Greenland shine karo na farko da aka yi rikodin irin wannan. Kuma shine watan Agusta 14 na ƙarshe ya fara ruwan sama a saman ƙanƙara na kankara. Wannan saboda zafin iska ya sami damar tsayawa sama da daskarewa na awanni tara.
A cikin wannan labarin za mu gaya muku dalilin da ya sa wannan abin ya faru da abin da zai iya haifar da sakamako.
Ana ruwan sama a Greenland
Ƙaruwar matsakaicin yanayin zafi na duk duniya yana haifar da mummunan lalacewa a waɗancan wuraren da suka fi kula da canje -canje a yanayin zafi. Misali, yankin gungumen yawanci yana da saukin kamuwa da canje -canje a yanayin zafi. Kamar yadda muka gani a lokuta da yawa, Tekun Arctic yana ƙarewa da kankara. Wannan yana da tasiri sosai ga dabbobin da ke buƙatar kankara don tsira tunda tsarin tsarinta ne. Bugu da ƙari, mun san cewa akwai daidaituwa a cikin gidan yanar gizon abinci wanda dabbobi za su iya rayuwa da su.
Saboda karuwar yanayin zafi, wannan ma'aunin yana rushewa. Wannan shi ne karon farko da aka yi rikodin irin wannan tun lokacin da aka yi rikodin yanayin zafi. Kuma shine A ranar 14 ga watan Agusta, ta fara ruwan sama a saman mafi girman kankara na Greenland. Wannan ya faru ne saboda zafin iska yana iya tsayawa sama da daskarewa na tsawon awanni tara. Wannan ya zama karo na uku cikin kasa da shekaru goma da hakan ta faru.
Tare da yanayin zafi ƙasa da sifili kuma sama da mita 3.200 na sama, yanayin a taron na Greenland Ba sa yawan haifar da hazo a cikin ruwa amma na dusar ƙanƙara. Saboda haka, wannan gaskiyar tana da mahimmanci.
Dice game da taron
Dangane da bayanai daga Cibiyar Bayar da Ƙasa da Ƙasa ta Amurka (NSIDC), girman narkar da kankara ya kai kololuwa a ranar 14 ga Agusta a murabba'in kilomita 872.000. Kashegari bayan wannan taron, dusar ƙanƙara ta riga ta ɓace yanki sau 7 sama da matsakaicin abin da ke faruwa a tsakiyar watan Agusta. Shekaru na 2012 da 2021 ne kawai suka yi rijistar sama da sau ɗaya narkar da murabba'in kilomita 800.000.
Al’ummar kimiyya suna nazari sosai don ganin abin da zai iya biyo baya. A cewar al'ummar kimiyya, wannan ba alama ce mai kyau ga kankara ba. Ruwa a kan kankara yana sa mafi kusantar narkewa. Ba wai kawai don kasancewa mai ɗumi da lokacin zafi ba, amma ruwan yana ɗaukar ƙarin hasken rana don yin duhu. Don fahimtar wannan dole ne mu san manufar albedo. Albedo shine adadin hasken rana wanda ke nunawa daga rana akan saman. Daɗaɗɗen launi na farfajiyar shine, ƙarin hasken rana zai haskaka. A wannan yanayin, kankara gaba ɗaya fari ne don haka yana da babban albedo index. Da yake yana da ruwa a saman kuma ya fi duhu fiye da kankara, yana ɗaukar ƙarin hasken rana, wanda kuma, yana ƙara narkewa.
Jimlar ruwan sama a kan kankara ya kai tan biliyan 7. Sauran masana kimiyya waɗanda kuma ke aiki a yankin ta hanyar raba hotuna game da yanayin narkewa a cikin kankara na Greenland kuma abin damuwa ne.
Canje -canje masu canzawa
Sabon rahoton IPCC (Kwamitin kwararru na Majalisar Dinkin Duniya kan Sauyin Yanayi) wanda aka bayar a ranar 9 ga watan Agusta ya yi gargadin sauye -sauyen yanayi da tsarin yanayi, wadanda tuni sun fara kuma ba za su sake juyawa ba tsawon daruruwan ko dubban shekaru. Daya daga cikinsu shine Greenland narkewa. Kamar yadda hukumar ta ƙaddara, ci gaba da asarar kankara a ƙarni na XNUMX kusan tabbas kuma, kamar yadda sauran binciken suka tabbatar, yana da sauri fiye da yadda ake tsammani.
Dangane da kimiyyar yanayi, abin da ke haifar da shi shine hayakin da ayyukan mutane ke haifarwa, kuma cikakkiyar raguwar gurɓataccen iska shine babban abin buƙata, don yanayin ya daidaita kuma babu sauran wasu mawuyacin yanayi.
A cikin Greenland, 60% na hauhawar matakin teku saboda narkewar kankara. Idan yanayin hasara na kankara ya ci gaba a halin yanzu, Zuwa shekara ta 2100, mutane miliyan 400 za su fuskanci barazanar ambaliyar ruwa a gabar teku a kowace shekara.
Kamar yadda kuke gani, canjin yanayi ya rigaya yana yin mummunar illa ga duniya gaba ɗaya. Wannan farkon ne kawai saboda zai yi matukar wahala a canza canje -canjen. Ina fatan cewa tare da wannan bayanin zaku iya ƙarin koyo game da ruwan sama a Greenland.