EI Nino Effect causes a drastic change in the weather conditions across the globe
What is EI Nino Effect
When EI Nino Occurs
Effects of Nino Effect
Tropical Cyclones occur on the sub tropical ridge side around the equator. It then moves towards the ridge axis after which it enters the main belt of Westerlies. The areas near Western side of Korea and Japan experiences fewer tropical cyclones during the time of September to November. During the occurence of EI Nino, the break in the subtropical ridge lies near 130 degree, thereby favoring the Japanese archipelago.
Influence on the tropical Atlantic Ocean
Studies reveal that EI Nino effect which occurs in the equatorial Pacific causes warm climate. The easterly trade winds in the region of western equatorial Atlantic is strengthened by the Atlantic Walker circulation over Southern America. This results in unusual cooling of the eastern equatorial Atlantic climate in the seasons of summer and spring, thereby resulting in EI Nino in the winter season.
EI Nino conditions also cause high pressure anomalies in Bellingshausen Seas, Ammundsen. This results in the reduction of sea ice and hence increased heat in these areas. On the other hand, the Weddell Sea tends to become cooler due to excessive sea ice. Thus opposite heat and atmospheric pressure anomalies occur during the reverse La Nina effect.