Ucwaningo olusha lubonise ukuthi olunye uchungechunge olubaluleke kakhulu lwe-Current Ocean Ocean - I-Atlantic Medidional Ukujikeleza Kwasolwandle, kanye nolwandle olusenyakatho ne-labradorsk, kudluliswa ukushisa kusuka eningizimu naseNyakatho Atlantic kuya ngaphezulu I-Polar Water Water Atlantic futhi ngaleyo ndlela isize umhlaba ukulawula amazinga okushisa - ifinyelele esimweni sayo esibuthakathaka kakhulu seMillenium. Futhi ukusatshalaliswa okusebenzayo kokushisa emhlabeni kwawungabaza.
Ososayensi abavela e-Ireland National University kwisondlo, e-University College of London (United Kingdom) kanye ne-PotSdam University (Germany) bafunda imininingwane ekhomba inqola engakaze ibonwe endaweni ye-amoc eminyakeni eyi-1600 ngenxa yokushintsha kwesimo sezulu se-anthropogenic. Umsebenzi wabo unyatheliswa ejeni le-Nature Geoscience.
Njengoba, njengoba sekushiwo ngenhla, ukusakazwa kwamanzi e-Atlantic kubekezelela ukushisa eNyakatho, kusiza ekufudumazelele amazwe - futhi ngaphandle kwalobusika ku-UK Colles cishe kucishe kube ngu-5 ° C kubanda cishe. Iqiniso lokuthi ukufudumala komhlaba kwenza buthaka i-Atlantic Flow Golf Streed kuyingxenye ye-Amoc, sekuyisikhathi eside yaziwa. Ngo-2018, iqembu lososayensi lamemezela ukuthi ijubane lokufuya kwegalofu lawa ubuncane kuwo wonke umlando wokubona futhi ngokuzayo lokhu kugeleza kunganyamalala nhlobo. Ngokwemininingwane yabo yokugcina, ukujikeleza okuhle kwe-Atlantic uqobo lwako kusuka maphakathi nekhulu lamashumi amabili leminyaka elibangelwa ngamaphesenti angaba ngu-15.
"Ngokokuqala ngqa ukuhlangana nezifundo eziningana zangaphambilini futhi sathola ukuthi zinikeza isithombe esingaguquguquki sokuvela kwemvelo yama-Amoc iminyaka engu-1600," kusho uDkt Stefan Ramstorf, udokotela wezulu ovela e-PotSdam University. - Imiphumela ikhombisile ukuthi ukusakazwa kwakuzinzile kuze kube sekupheleni kwekhulu le-XIX. Kepha ngokuphothulwa kwenkathi encane yobukhazikhazi, cishe ngo-1850, ukugeleza kolwandle kwaqala ukwehla, futhi kusukela maphakathi nekhulu lamashumi amabili, selokhu kwalandelwa ama-60s, ehle kakhulu, ukwehla okubukhali. Ukuvuselelwa kancane kwavela kwavela ngaleso sikhathi ngeminyaka yama-1990s, kodwa-ke ukwehla kwenzeka eminyakeni eyishumi yokuqala ka-2000. "
Ukufezekiswa okusemqoka komsebenzi ukuthi kuhlanganiswe izinhlobo eziningana ezahlukahlukene ze-Climate "Data Idatha" ukuhlola izinguquko ze-Amoc. Kuyiqiniso, imiphumela kufanele itholakale ngokuqapha, ikakhulukazi njengoba izizathu okungenzeka zokukhohlisa kokujikeleza kwe-Atlantic akufundwanga ngokuqondile.
Kodwa-ke, njengoba izifundo zangaphambilini zikhombisile, ukuguquka kwesimo sezulu, okucasulwa ngumsebenzi womuntu, kungaba nomthelela ekunciphiseni ukugeleza kolwandle, kubangele ukuncibilika kweqhwa ezindaweni ezisenyakatho ephakeme. Ukuncibilika kweqhwa kuletha amanzi amasha olwandle - futhi kuphazamisa ukujikeleza okujwayelekile olwandle. Ngenxa yalokho, uma ukufudumala komhlaba kuzoqhubeka kuze kube sekupheleni kwekhulu le-XXI (njengoba siqonda, le nqubo ayisamiswa), "Ukuhambisa kwamanje akusamiswa) ekugcineni isimo sezulu siyoshintsha kakhulu.
Ngokusho kososayensi, ukwehla kokujikeleza kwamanzi sekubonisiwe ohlelweni lwesimo sezulu ezinhlangothini zombili ze-Atlantic Ocean. Njengoba ukugeleza kogu lwasempumalanga kubuthakathaka, amanzi amaningi angaqongelela, okuzoholela ekwandeni okuqinisiwe kwezinga lolwandle, ngokwesibonelo, eduze kwaseNew York naseBoston.
Ngasikhathi sinye, iYurophu ibhekene namagagasi okushisa. "Ikakhulu, igagasi lokushisa ehlobo lika-2015 lalihlotshaniswa nemikhondo erekhodiwe engxenyeni esenyakatho yoLwandlekazi i-Atlantic ngonyaka ofanayo - lena izobonakala iyithonya eliyindida ngenxa yokuthi ingxenye esenyakatho yamakhaza ye I-Atlantic inomthelela ekwakhekeni kwengcindezi yomoya, eqondisa umoya ofudumele ukusuka eningizimu eYurophu, "kusho ababhali bomsebenzi.
Umthombo: Isayensi Enqunu