기후변화와 항공난류의 연관성 연구

Abstract

ABSTRACT

Jet stream associated with Climate Change intensifies Turbulence

Jung Wuk Advisor : Prof. Ryu, Chan-Su, Ph.D. Department of Atmosphere Sciences, Graduate School of Chosun University

During the cruise flight of civil aircraft, Turbulence is the greatest threat for aircraft safety. In this research paper, we assume that the climate changes could affect mid-latitude jet stream pattern during winter season. To verify our assumption, we analysis NCEP/NCAR PSD data to evaluate between past and present environmental factors. Focusing two factors such as 1000hPa air temperature and 300hPa zonal wind. Reduced temperature gradient affect upper lever zonal wind speed during winter season. With NCEP/NCAR data, we understand reduced temperature gradient influencing zonal wind speed. Jet stream has a feature that weaker zonal wind makes stronger meridional wind. Climate changes influences mid-latitude of Artic amplification and Hadley cell expansion. These two factors also manipulate general circulation. To understand between meandering jet stream and turbulence, we used PIREP of KMA and 300hPa chart. Through this research, we have a understanding meandering jet stream affected climate change has a strong relation turbulence during winter season over Korea peninsula.