日全食期间中间层大气臭氧光化过程试验

TEST OF PHOTOCHEMICAL PROCESS OF MESOSPHERIC OZONE DURING THE TOTAL SOLAR ECLIPSE

利用包括活Ox、HOx、和NOx等成份在内的一维时变光化模式，研究了日全食时上中层大气臭氧和O2（1△g）的变化特性，并通过与观测资料的比较进行了光化模式的试验．结果表明，日全食时太阳辐照变化对1．27μm气晖影响的高度比曙暮期间明显偏低，利用1．27μm气晖光度计测量大气臭氧的高度范围约为52-67km．1997年3月9日漠河日全食时测量的大气臭氧含量变化幅度为50％．这与考虑Ox、HOx和NOx等成份的光化模式理论模拟结果基本一致．它表明在52-67km高度范围不存在臭氧亏损现象．

This paper studies the variation of atmospheric ozone and O2(1△g) during total solar eclipse using the 1D time-dependent photochemical model of nitrogenhydrogen-oxygen atmosphere. And the test of photochemical models is made through the comparison with the observed data. The results show that the effective altitude of the variation of solar irradiance on 1.27μm airglow during total solar eclipse is obviously lower than that in twilight. The observed altitudes of atmospheric ozone during this total solar eclipse is about 52-67km from 1.27μm airglow emission and the observed increase of the ozone contents in Mohe is about 50% during the eclipse of March 9, 1997. It is consistent with the results of theoretical analyses of nitrogen-hydrogen-oxygen atmosphere. It exhibits no ozone deficit in the altitude of 52-67 km.