![]() This is a region of ocean in the tropical Pacific, which is alternating between warm and cold phases, called El Nino and La Nina, respectfully.ĮNSO has a major impact on the tropical convection patterns and the complex interaction of the ocean-atmosphere system. To keep it as simple as possible, ENSO is short for “ El Niño Southern Oscillation”. We will also take a look at the first long-range forecasts for Autumn and Winter 2021/2022, to see if there is any hint of a La Nina impact on our weather. New cooling in the tropical Pacific has begun, expected to intensify into Autumn and towards the Winter season.īut what exactly is this La Nina, and how can it be so powerful to impact the winter weather across the entire Northern Hemisphere? As you are about to find out, La Nina is actually a part of a large system that connects the ocean and the atmosphere called the ENSO. ![]() Cold La Nina is returning for Winter 2021/2022, with a “La Nina watch” now officially issued for the coming months.
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