Validation of upper mesospheric and lower thermospheric temperatures measured by the Solar Occultation for Ice Experiment
Validation of upper mesospheric and lower thermospheric temperatures measured by the Solar Occultation for Ice Experiment
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DOI：
10.1029/2012jd017689
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发表时间：
2012-08
影响因子：
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通讯作者：
M. Stevens;L. Deaver;M. Hervig;J. Russell;D. Siskind;P. Sheese;E. Llewellyn;R. Gattinger;J. H
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文献类型：
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作者：
M. Stevens;L. Deaver;M. Hervig;J. Russell;D. Siskind;P. Sheese;E. Llewellyn;R. Gattinger;J. H
[1]极地中层和低热层温度观测是研究极地中层云形成和变率的关键。自2007年以来，美国宇航局中间层冰高层大气学（AIM）卫星上的太阳掩星冰实验（SOFIE）几乎一直在测量极地大气的温度。我们在这里提出了一个改进的SOFIE温度数据集，并验证它对各种卫星和地面观测。我们发现，当把所有的比较在一起，SOFIE温度与独立的观察报告的系统不确定性从15至88公里的高度。在88和95公里之间，SOFIE温度有一个温暖的偏差，北极夏季的峰值在10和15 K之间，南极夏季的峰值在20-30 K之间。大部分的暖偏差可能与SOFIE温度反演所需的规定原子氧密度的不确定性有关。
[1] Temperature observations in the polar mesosphere and lower thermosphere are critical for studies of polar mesospheric cloud (PMC) formation and variability. The Solar Occultation for Ice Experiment (SOFIE) on NASA's Aeronomy of Ice in the Mesosphere (AIM) satellite has been measuring temperatures in the polar atmosphere nearly continuously since 2007. We herein present an improved SOFIE temperature data set and validate it against a variety of satellite and ground-based observations. We find that when taking all comparisons together, SOFIE temperatures are in agreement with independent observations to within reported systematic uncertainties from 15 to 88 km altitude. Between 88 and 95 km SOFIE temperatures have a warm bias that peaks between 10 and 15 K in the Arctic summer and 20–30 K in the Antarctic summer. Much of the warm bias is likely related to uncertainties in prescribed atomic oxygen densities that are required for the SOFIE temperature retrieval.