Influence of climatic warming in the Southern and Northern Hemi- sphere on the tropical cyclone over the western North Pacific Ocean

INTRODUCTION Global warming is a critical environment prob- lem, and has long been a subject of concern for sci- entists, policy-makers, and many citizens. Increased interest in global warming stems from its potentially disastrous consequences to ecosystems on earth, which may give rise to anomalous regional drought, more frequent and severe floods, intensification of storm, hurricane and typhoon, etc. Concern about mankind’s negative impact on global environmental changes gave rise to th…

Influence of climatic warming in the Southern and Northern Hemisphere on the tropical cyclone over the western North Pacific Ocean

Based on analyzing the surface air temperature series in the Southern and Northern Hemisphere and the tropical cyclone (TC) over the western North Pacific Ocean, the relationships between climatic warming and the frequency and intensity of tropical cyclone are investigated. The results showed that with the climatic warming in both hemispheres, the frequency of the tropical cyclone over the western North Pacific Ocean reduces and its intensity weakens simultaneously. A possible explanation might be that the cold air invasion from the Southern Hemisphere weakens due to global warming.