"El Nino southern oscillation"@en-us . . "El Nino southern oscillation"^^ . . "11488828-n"^^ . . . . . . "111488828"^^ . . "110747804"@en-us . "0"^^ . "107822824"@en-us . "0"^^ . . "a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns"@en-us .