Satellite observations of daytime and nighttime ozone in the mesosphere and lower thermosphere
Satellite observations of daytime and nighttime ozone in the mesosphere and lower thermosphere
复制标题
中层和低热层白天和夜间臭氧的卫星观测
DOI：
10.1029/2002jd002800
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发表时间：
2003
影响因子：
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通讯作者：
A. Kutepov
中科院分区：
文献类型：
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作者：
M. Kaufmann;O. Gusev;K. Grossmann;F. Martín;D. Marsh;A. Kutepov
[1]利用1994年11月和1997年8月两次航天飞机任务期间的低温红外光谱仪和大气望远镜（CRISTA）实验，测量了大气中间层和低层热层臭氧9.6 μm红外辐射的全球分布。利用非局域热力学平衡模型，将CRISTA测量的辐射反演为50-95 km范围内的O3数密度。对检索到的O3数密度进行了详细的灵敏度研究。臭氧丰度曲线显示，在平流层顶的体积混合比为1 - 2 ppmv，在80 km附近为0.5 ppmv或更小，在次极大值时，通常在白天和夜间分别为1 ppmv和10 ppmv。与其他实验的一致性通常优于25%。全球中高层臭氧分布呈现明显的纬向梯度，在赤道中高层臭氧分布增强。在极夜终止点处观测到第三次臭氧极大值。三维模型结果表明，纬度梯度受太阳潮汐的显著影响。
[1] The global distribution of mesospheric and lower thermospheric ozone 9.6 μm infrared emissions was measured by the Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere (CRISTA) experiment during two Space Shuttle missions in November 1994 and August 1997. The radiances measured by CRISTA have been inverted to O3 number densities in the 50–95 km range by using a nonlocal thermodynamic equilibrium model. A detailed sensitivity study of retrieved O3 number densities has been carried out. The ozone abundance profiles show volume mixing ratios of 1–2 ppmv at the stratopause, 0.5 ppmv or less around 80 km, and typically 1 ppmv during daytime and 10 ppmv during nighttime at the secondary maximum. The agreement with other experiments is typically better than 25%. The global distribution of upper mesospheric ozone shows significant latitudinal gradients and an enhancement in the equatorial upper mesosphere. At the polar night terminator a third ozone maximum is observed. Three-dimensional model results indicate that the latitudinal gradients are significantly influenced by solar tides.