热带印度洋海温变化对东亚地区臭氧层分布的影响

The impact of tropical Indian Ocean temperature on the ozone layer in East Asia

利用英国Hadley中心的海温和NASA的臭氧混合比的月平均再分析资料,计算表征热带印度洋海温变化的主模态(IOB、IOD)的IOBI指数和IODI指数,分析了1980—2015年间热带印度洋海温异常与东亚地区平流层臭氧混合比之间的相关关系,探讨了热带印度洋海温变化对东亚臭氧层分布的影响.结果表明:(1)热带印度洋海温变化对东亚地区平流层臭氧分布有明显的影响,并且与IOB、IOD的时间变化规律相一致;(2)IOBI、IODI与东亚平流层臭氧变化具有一定的相关关系,特别是在春、秋季节时,平流层低层(70 h Pa)和中层(40h Pa)高度处两者间的相关性尤为显著.

Based on the British Hadley center SST, NASA ozone mass mixing ratio reanalysis during 1980-- 2015, calculating the IOB index and IOD index which characterize the dominating modes of tropical Indian Ocean SST interannual variability--Indian Ocean Basin （IOB） mode and Indian Ocean Dipole （IOD） mode, analyzing the correlation of tropical Indian Ocean SST anomalies and ozone mass mixing ratio in stratosphere over East A- sia. And the impact of Tropical Indian Ocean temperature on the ozone layer in East Asia region also has been in- vestigated in this paper.The result show：（ 1 ）the changes of tropical Indian Ocean SST have significant effects on stratospheric ozone distribution in East Asia, and it＇ s consistent whit the changing rules of IOB and IOD ; （2） IO- BI and IODI have a certain correlation with stratospheric ozone changes in East Asia, with a particularly signifi- cant correlation in the lower stratosphere （70 hPa） and middle stratosphere （40 hPa） especially during the spring and autumn seasons.