|Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2008: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Effect of the solar Ultra-Violet radiation(UV) on the Southern Annular Mode(SAM) was examined through the analysis of observational data and simulations of a chemistry-climate model. When the solar activity is higher and the UV is stronger, the Polar-night Jet Oscillation(PJO), which is the dominant mode of variability of the stratosphere-troposphere coupled system in late winter/spring, is found to be more enhanced and stronger SAM signal is created at the surface. Analysis of simulations of chemistry-climate model with changing UV strengths suggests that such solar UV-SAM relationship was created through enhanced wave-mean flow interaction originated from increases of ozone and temperature in the stratosphere under high solar UV condition.