Due to La Niña, a storm could occur Above-average rainfall in northern South and Central Americathe Caribbean, North Africa and the Sahel region, as well as parts of Southwest Asia and Indonesia, Malaysia and the Philippines.
The La Niña phenomenon occurs as a result of the decrease in surface temperatures in certain areas of the Pacific Ocean, which is usually accompanied by changes in the wind, pressure and rainfall patternsExperts have clarified that their duration cannot be predicted yet, as the cycles vary depending on the time of year and the interaction with other climatic conditions.
Meteorologists predict that it will have a “weak” intensity. A long La Niña episode was expected between 2020 and 2023.
Read more: La Niña phenomenon: What will the conditions be like in September in Guatemala?
The WMO said that despite its extension, the general trend towards increasing temperatures at a global level as evidenced by the last nine years, which have collectively been the warmest on record.
The Secretary General of the WMO, Argentine Celeste Saulo, recalled that since June 2023 a exceptional temperature streak on land and sea surfaces.
Saulo mentioned that even if La Niña forms and exerts a short-term cooling effect, this will not modify the trend of global temperatures as a result of the greenhouse gas emissions that retain heat in the atmosphere.
The experts practically They ruled out the risk of a new El Niño phenomenon appearingwhich was intense from early 2023 to mid-2024, becoming one of the five most intense ever recorded.
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What is El Niño
Table of Contents
Understanding La Niña: Impact on Global Weather Patterns
La Niña, a complex weather phenomenon, is taking center stage as it replaces El Niño, bringing about a shift in global weather patterns. As the National Ocean Service explains, La Niña is characterized by stronger-than-usual trade winds that push warm water towards Asia, resulting in cooler weather in the Pacific Ocean [[2]]. But what does this mean for the rest of the world?
Impact on Regional Weather Patterns
La Niña is expected to bring above-average rainfall to northern South and Central America, the Caribbean, North Africa, and the Sahel region, as well as parts of Southwest Asia and Indonesia, Malaysia, and the Philippines. This increased rainfall can lead to flooding and landslides in these regions.
On the other hand, La Niña will bring warmer and drier weather to the Horn of Africa, potentially plunging several countries into food insecurity [[1]]. This highlights the importance of understanding the regional implications of La Niña to prepare for its effects.
Characteristics of La Niña
La Niña is characterized by lower-than-normal air pressure over the western Pacific, contributing to increased rainfall in certain regions [[3]]. The phenomenon occurs when surface temperatures in the Pacific Ocean decrease, leading to changes in wind, pressure, and rainfall patterns.
Duration and Intensity
Meteorologists predict that the current La Niña episode will have a “weak” intensity. While the duration of La Niña cannot be precisely predicted, experts believe that it may last for several months, with some episodes lasting up to three years.
Global Temperature Trends
Despite the short-term cooling effect of La Niña, the World Meteorological Organization (WMO) emphasizes that the general trend towards increasing global temperatures remains unchanged [[4]]. The last nine years have been the warmest on record, and greenhouse gas emissions continue to retain heat in the atmosphere, contributing to global warming.
El Niño vs. La Niña
La Niña has the opposite effect of El Niño, which was intense from early 2023. The experts have ruled out the risk of a new El Niño phenomenon appearing in the near future.
Conclusion
La Niña is a complex weather phenomenon that brings about significant changes to global weather patterns. Understanding its regional implications, characteristics, and duration is crucial for preparing for its effects. While La Niña may bring some short-term relief from the increasing global temperatures, it is essential to recognize the ongoing trend of global warming driven by greenhouse gas emissions.
References:
What is El Niño
Understanding La Niña: Impact on Global Weather Patterns
La Niña, a complex weather phenomenon, is taking center stage as it replaces El Niño, bringing about a shift in global weather patterns. As the National Ocean Service explains, La Niña is characterized by stronger-than-usual trade winds that push warm water towards Asia, resulting in cooler weather in the Pacific Ocean [[2]]. But what does this mean for the rest of the world?
Impact on Regional Weather Patterns
La Niña is expected to bring above-average rainfall to northern South and Central America, the Caribbean, North Africa, and the Sahel region, as well as parts of Southwest Asia and Indonesia, Malaysia, and the Philippines. This increased rainfall can lead to flooding and landslides in these regions. On the other hand, La Niña will bring warmer and drier weather to the Horn of Africa, potentially plunging several countries into food insecurity [[1]]. This highlights the importance of understanding the regional implications of La Niña to prepare for its effects.
Characteristics of La Niña
La Niña is characterized by lower-than-normal air pressure over the western Pacific, contributing
