Important data on Triple Dip La Nina
- The longest triple dip La Nina continued for 30 months from the spring of 1973 to the spring of 1976, as per the National Oceanic and Atmospheric Administration (NOAA) record.
- The National Oceanic and Atmospheric Administration (NOAA) forecasts that the expected winter season of triple dip La Nina will happen between December 2022 and February 2023.
- The first triple-dip La Nina of the 21st century, which started in September 2020, is the third since 1950. The present phase of La Nina is going to be the first ‘triple dip’ event of the 21st century.
- The WMO predicts that the current triple dip La Nina will continue and will intensify by 70% in September-November 2022 but gradually decrease to 55% in December-February 2022/2023.
Conclusion:
Triple dip La Nina is a part of a cyclic geographical phenomenon that generally continues for three consecutive winter seasons and can significantly impact global weather, climate, and ocean conditions. It also affects food production, human health, and water supply due to abnormal changes in weather conditions. In today’s world, all unusual and extreme climate events have some connection with human-induced environmental pollution, which must be controlled by any means.
Triple Dip La Nina
La Nina (‘Little Girl‘ in Spanish) is a natural and periodic weather pattern that occurs due to fluctuating ocean temperatures in one particular part of the world, namely the east-central equatorial Pacific Ocean. It is the cyclic process of cooling sea surface temperature in the central and eastern Pacific Oceans situated in the equatorial region. This cooling effect results in unique patterns of tropical wind circulation, atmospheric pressure, and rainfall, causing significant changes in weather and climate. The unusual cooling of seawater causes less water evaporation so the air above becomes dryer, cooler, and denser.
This dense air doesn’t develop into storms and causes less rainfall in certain parts of the world and more rainfall in other parts. This natural event typically occurs in a cycle of five to seven years and lasts for about three years. That is why it is called triple-dip La Nina. La Nina gives rise to stronger ocean winds that intensify during July and August, affecting temperature and rainfall patterns. This leads to storms, drought, and flood-like situations.
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