Ionization of the atmosphere caused by solar protons and its influence on ozonosphere of the Earth during 1994–2003
Ionization of the atmosphere caused by solar protons and its influence on ozonosphere of the Earth during 1994–2003
复制标题
1994-2003年太阳质子引起的大气电离及其对地球臭氧层的影响
DOI：
10.1016/j.jastp.2004.08.004
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发表时间：
2005
影响因子：
1.9
通讯作者：
T. Vyushkova
中科院分区：
文献类型：
--
作者：
A. Krivolutsky;A. Kuminov;T. Vyushkova
利用卫星观测太阳不同能量通道中的质子通量，研究了太阳活动第23周期间的质子活动。太阳质子强度的几次极大值出现在1998年、2000年、2001年和2003年，最低值出现在1999年。利用太阳质子的能量谱计算了几个最强太阳质子事件(SPE)引起的大气电离。计算结果表明，不同的SPE引起的电离结构有很大的不同。利用光化学模型计算了70°N的化学成分(臭氧等)对最强事件的响应。光化学计算表明，无论是在2000年7月的著名SPE之后，还是在2001年11月的SPE之后，平流层和中层的臭氧消耗都很强烈。特别关注发生在2003年10月至11月期间的特殊目的企业。光化学模拟的结果还表明，太阳质子额外产生的OH分子导致了中层大气水汽的增加。经计算，在2000年7月SPE之后，中间层的增量约为2%。同时，最后的结果还需要进一步的研究，涉及与离子的光化学反应。
Satellite observations of solar proton fluxes in different energetic channels have been used to investigate proton activity of the Sun during 23rd cycle of its activity. Several maxima of solar proton intensity occurred in 1998, 2000, 2001, and in 2003, with a minima in 1999. Ionization of the atmosphere caused by several strongest solar proton events (SPEs) was calculated using energetic spectrums of solar protons. It was shown on the basis of the calculations that the revealed structure of ionization caused by different SPEs looks rather different from one SPE to another. The response of chemical composition (ozone and others) at 70°N to the strongest events was calculated using photochemical model. It was shown by photochemical calculations that ozone depletion in the stratosphere and mesosphere was strong not only after famous SPE in July 2000, but also after SPE in November 2001. Special focus was on SPEs that occurred during October–November 2003 period. The results of photochemical simulations has also shown that additional production of OH molecular by solar protons leads to water vapor increase in the middle atmosphere. Calculated increase equaled about 2% in the mesosphere after SPE in July 2000. At the same time, the last result needs additional investigations involving photochemical reactions with ions.