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Alternative TitleThe contribution of reaction HO2+o-oH+O2 to OH nightglow
高红; 徐寄遥; 袁韡; 陈光明; 北京8701信箱
Source Publication地球物理学报
KeywordOh夜气辉 数密度 振动能级 振动带强度
Abstract本文探讨了OH Meinel夜气辉辐射的光化学模式,给出OH(v≤9)分子数密度分布的计算通式,重点研究了化学反应HO2+O→0H(v≤6)+O2对v≤6各振动能级上OH分子数密度分布以及(v′-v″)(v′≤6)振动带气辉辐射的影响.结果表明,该反应对数密度的贡献随振动能级的减小而增大,对(v′-v″)振动带辐射的贡献随着较高振动能级v′的减小而增大,以春分时为例,它可使第1振动能级上的OH分子最大数密度和(1—0)带的最大辐射率增加约33%,第6振动能级上的最大数密度和(6-v″)带的最大辐射率增加约7%,(1-0)带的辐射强度增加约30%,(6-v″)带的强度增加约11%.该反应使各振动能级上分子数密度的高度分布剖面以及各振动带体辐射率的高度分布剖面变宽,最大数密度、最大发射率所处的高度下降1km左右.此外,该反应的影响程度随着原子氧密度的降低而增大,随着温度的升高而增大,并且在夏至时最大,在冬至时最小.
Other AbstractThe photochemical model for the OH Meinel bands nightglow emission is discussed.Both the expression for the number densities of 0H(v≤9)and the expression for the 0H vibrational bands nightglow emission rates are derived from the photochemical mode1.11Ile impact of chemical reaction,HO2+0-0H(v≤ 6)+O2,on the numb er densities of 0H(v≤6)and on the 0H(v-v )(v ≤6)(v represent the higher vibrational levels and v represent the lower vibrational levels) vibrational bands emission are studied detailedly.rI1le results indicate that the contribution of the reaction to the numb er densities increases with decreasing and the contribution to the 0H( - )vibrational bands emission increases with decreasing.rI1le calculations for vernal equinox,local midnight at(0。E,45。N)show that the reaction makes the peak density for level =1 and the peak emission rate of the OH(1-0)vibrational band increase bv about 33%,the peak density for level =6 and the peak emission rates of the 0H(6-”)vibrational bands increase by about 7%,the 0H(1-0)band intensity increase by about 30%,and the OH(6-”)bands intensities increase by about ll%.Furthermore,the reaction can make the widths of the altitude profiles for both the numb er densities an d the vibrational bands emission rates increase,an d the peak altitudes of these Drofiles lower by about l km.The contribution of the reaction is sensitive to the atomic oxygen density and temperature.It increases with decreasing atomic oxygen density,and increases with increasing temperature almost linearly.And it is the strongest for summer solstice an d the weakest for winter solstice.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
高红,徐寄遥,袁韡,等. 反应HO2+O→OH+O2对OH夜气辉辐射的贡献[J]. 地球物理学报,2007,50(4):1011-1016.
APA 高红,徐寄遥,袁韡,陈光明,&北京8701信箱.(2007).反应HO2+O→OH+O2对OH夜气辉辐射的贡献.地球物理学报,50(4),1011-1016.
MLA 高红,et al."反应HO2+O→OH+O2对OH夜气辉辐射的贡献".地球物理学报 50.4(2007):1011-1016.
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