Como sesivele sethule phambilini, amandla e-NAO achazwa yinkomba ye-NAO. Inkomba ye-NAO yiyona umehluko phakathi kwengcindezi olwandle phakathi kweziteshi ezimbili ezisendaweni eseduze nezikhungo ze-Lowlands of Iceland kanye neHighlands of the Azores. IStykkisholmur (i-Iceland) isetshenziswa njengesiteshi esisenyakatho, kuyilapho iPonta Delgada (Azores), iLisbon (Portugal) neGibraltar isetshenziswa njengesiteshi esiseningizimu.
La isigaba esihle senkomba ye-NAO inikeza ezinye izingcindezi eziphakeme kunokujwayelekile ezindaweni eziphakathi nendawo ezishisayo futhi ezijulile kunezingcindezi eziphansi e-Atlantic. Ukwanda komehluko wamazinga okushisa kuholela ezivunguvungwini ezivame kakhulu futhi ezinkulu zasebusika ezinqamula i-Atlantic Ocean, kanye nokunyakaza okuya ngasenyakatho. Ngenxa yalokhu, ubusika obushisayo nobunomswakama buba khona eYurophu kanti ubusika obomile nobubandayo eCanada naseGreenland. Kulokhu, i-US esempumalanga ibhekana nezimo zasebusika eziphansi nezinomswakama. Isibonelo, amazinga aphezulu ebusika / entwasahlobo ka-1989, 1990 nango-1995 adalwa wukufuduswa kwenetha lomoya lisuka e-Arctic nase-Iceland liya emabhande asezindaweni ezishisayo eduze nase-Azores naseNhlonhlweni ye-Iberia, nemimoya yasentshonalanga yaqina iNyakatho ye-Atlantic Ocean. Eminye imimoya enamandla evela entshonalanga idala umoya oswakeme futhi ofudumele kakhulu ezwenikazi laseYurophu futhi iholele ebusika obumnandi basolwandle.
La isigaba esingalungile senkomba ye-NAO khombisa a isikhungo somfutho ophakeme ongaphansi kwezindawo eziphansi komhlaba kanye nesikhungo sase-Iceland esibuthakathaka sengcindezi ephansi. I-gradient yengcindezi encishisiwe ibangela ukugeleza okuncane, okubuthakathaka okudabula ngomgwaqo osentshonalanga-mpumalanga. Bathwala umoya oswakeme baye eMedithera futhi ngokungabikho kokugeleza okukhulu kusuka entshonalanga kuya empumalanga, umoya obandayo waseSiberia ungehlela ezindaweni eziphansi kakhulu, ngakho-ke ukuwa kweqhwa okungajwayelekile kungenzeka eningizimu yeYurophu. Kodwa-ke, iGreenland inamazinga okushisa afudumele asebusika. Amanani aphansi ebusika / entwasahlobo ka-1917, 1936, 1963, no-1969 ayenemimoya ethambile yasentshonalanga phezu kweNyakatho ye-Atlantic Ocean ehambisana nobusika obubandayo kunokujwayelekile baseYurophu.
Umthombo: Linda
ngiyabonga, kuthakazelisa kakhulu!