Possible linkage between asymmetry of atmospheric meridional circulation and tropical cyclones in the Central Pacific during El Nino years.

ABSTRACT: The El Niño-Southern Oscillation is one of the most important drivers of climate change on Earth, and is characterised by warmer (El Niño) or colder (La Niña) ocean surface temperatures in the equatorial Pacific. Tropical cyclones (TCs) and meridional circulation are the most influential weather events and climate phenomena, respectively. However, the link between TCs and meridional circulation anomalies (MCA) during El Niño years is unclear. Therefore, we calculated the accumulated cyclone energy index of TCs and the mass stream function of MCA from 1980 to 2018. Our results showed that TCs were closely related to the asymmetry of the MCA in the Central Pacific during El Niño years. An updraft anomaly in the North Pacific was found, which affected the response of MCA to El Niño from May t

SUBMITTER: Li T 

PROVIDER: S-EPMC8570507 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature