☁️ introduction ☁️
Motivation
Typhoon is a tropical low pressure with a central maximum wind speed of 17m/s or more. So for the formation of the typhoon, water temperatures above 26 to 27℃, high temperature, and humidity are generally required. Considering the need for high water temperatures and humidity, we thought that the EI Niño which is the phenomenon of increasing average sea-level temperature in the Pacific Ocean must be related to the formation of typhoons.
We wondered how the El Niño affects the typhoon, so we looked for researches and studies about the various factors that affect the formation of typhoons. However, the impact of El Niño on the formation of the typhoon is not yet clear and researches are still underway. Therefore, we have decided to analyze typhoons in the Pacific Ocean in recent years and see how the El Niño affects the typhoon.
Hypothesis
location
When El Niño occurs, sea level temperatures in the eastern Pacific will be particularly high, so the location of the typhoon will be moved eastward compared to the average year.
intensity
During El Niño, the Pacific sea level temperature rises, creating an environment favorable to typhoons. This will increase the frequency of typhoons, and typhoons will also be larger than usual. Higher sea level temperatures will create stronger rising currents. And this will lower the central pressure of the storm. Furthermore, the lower central air pressure will increase the air pressure difference from the surrounding air, which will increase wind speed. El Niño increases the overall sea-level temperature, so it will continue to supply latent heat to typhoons. This will make typhoons last longer than usual.