Climate: La Niña

  • Published on 4/09/2020 - Published by Market News Service / FruiTrop
  • FruiTrop n°271 , Page From 8 to 8
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High probability of La Niña phenomenon occurring during the 2020-2021 season

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The falling temperatures observed in the Pacific Ocean since June has put the various climate monitoring services on alert. While the waters of the Pacific were bound to continue cooling, with surface temperatures remaining below normal for the season for three consecutive months, this autumn/winter 2020-2021 season is now confirmed to be set for a La Niña episode. This recurrent climate phenomenon which occurs every three or four years, contributes to ocean and atmospheric cooling of the coasts of South America, and has climate impacts which can be transmitted worldwide: cooler from December to February on the coasts of Peru and Ecuador, more abundant rains over North-East Brazil and into Colombia, higher temperatures in the Gulf of Mexico (and consequently a more active cyclone season), and even cooler temperatures in West Africa. Note that during the last La Niña (September 2017 to March 2018), banana production was heavily disrupted by low temperatures in early 2018, especially in Costa Rica and Guatemala. The cold also had impacts on the ramping-up of volumes from the Ecuadorian giant in late 2017/early 2018. Hence a light start to the year, because of the cold, was followed by a particularly heavily laden spring, because of the shift in the production curves. In Peru, while cumulative mango volumes over the 2017-2018 campaign provided a surplus, especially because of the expanding cultivation area, the start of the campaign was greatly delayed by climate conditions. Finally, we cannot help but observe that Cyclones Irma and Maria, which devastated the Caribbean in September/October 2017, also occurred during this climate phenomenon.

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