IPlanethi yoMhlaba yiplanethi ephilayo, kangangokuba xa amaqondo obushushu enyuka endaweni enye, awela kwenye ukugcina ulungelelwaniso lomsinga wehlabathi. Into efana nale izakwenzeka ngeMeditera neSahel: kule minyaka ingama-20 idlulileyo, ummandla weMeditera ujongene nokunyuka kwamaqondo obushushu kunye nokwehla kwemvula, iimvula ezibonakala ngathi ziye zaya eSahel, njengoko kutyhilwe kuphando olupapashwe kwiphephancwadi i-Nature Climate Change, olulungiswe yi-Max Planck Institute for Meteorology.
Ngenxa yokwanda kwamaqondo obushushu eMare Nostrum, ukufuma okufikelela kumda osemazantsi eSahara ekuqaleni kwesaqhwithi seNtshona Afrika ngoJuni nako kuphezulu. iSahel iba luhlaza ngakumbi.
Imozulu yaseSahel iyahluka kakhulu, ilawulwa yimvula enkulu yeNtshona Afrika, ethi izise imvula ukusuka ngoJuni ukuya kuSeptemba. Ukuphela konyaka, imbalela inkulu kakhulu. Umhlaba ushushu ngakumbi kunolwandle ehlotyeni, kuba ilanga likwindawo ephezulu kwaye, ukongeza, iilwandlekazi azifunxi ubushushu ngokukhawuleza njengomhlaba. Umoya uphuma kwilizwekazi kwaye ngokwenza njalo uvelisa ukuhamba kobumanzi ukusuka elwandle ukuya eSahel.
Ubungqongqo bemonono buye bahluka ngokuhamba kwexesha. Phakathi konyaka we-1950 nowe-1960, iSahel yafumana ithuba lokufuma; Ngeminyaka yoo-1980, imbalela yayiqatsele kangangokuba abantu abangaphezulu kwama-100.000 baphulukana nobomi babo. Ukusukela ngoko, yabuya imvula.
Unobangela ngokwezazinzulu ngu Ukufudumala kweMeditera. Ukufikelela kweso sigqibo, iimeko ezahlukeneyo zafundwa kusetyenziswa iindlela ezahlukeneyo zokulinganisa. Ke, babenako ukufumanisa ukuba ukuba ubushushu kwindawo yoLwandle iMeditera buhlala buhleli ngaphezulu okanye kancinci, imvula eSahel ayonyuki; Ngokuchasene noko, ukuba iMeditera iyafudumala, eSahel kunetha ngakumbi.
Kungenxa yokuba ayipheleli nje kuphela iqondo lobushushu, kodwa kunye nokufuma, yiyo ke le "evula" imvula yaseNtshona Afrika. Ngale ndlela, kule nxalenye yeAfrika, banokonwabela iimvula ezininzi ekuqaleni kwexesha lemvula.
Ungasifunda isifundo apha (ngesiNgesi).