El Niño and la Niña
The El Nino weather phenomenon, which triggers higher global temperatures, is expected to last until at least April 2024, according to the United Nations. Videographic on the El and La Niña climatic phenomena. VIDEOGRAPHIC
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00:00 El Niño and La Niña are opposing climatic phenomena which affect global weather patterns.
00:14 They are linked to fluctuations in temperature in the central and eastern Pacific Ocean around
00:18 the equator.
00:21 During an El Niño event, ocean surface waters warm near the coasts of South America.
00:28 It is generally associated with a rise in global temperatures, severe droughts in certain
00:33 parts of the world, and heavy rainfall in others.
00:40 During a La Niña event, the opposite generally occurs in terms of rainfall.
00:45 It is accompanied by a cooling of the surface waters of the Pacific and a general decrease
00:49 in temperature.
00:56 Scientists don't yet know exactly what causes these phenomena, but they do know it is linked
01:00 to a cycle of variations in atmospheric pressure between the east and western Pacific, linked
01:06 to a cycle of ocean currents along the equator.
01:11 These two phenomena can last from 9 to 12 months and occur irregularly but within a
01:15 time frame of 2 to 7 years.
01:17 [END]