Estimation of mesopause temperatures at low latitudes using the Kunming meteor radar
Estimation of mesopause temperatures at low latitudes using the Kunming meteor radar
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DOI：
10.1002/2015rs005722
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发表时间：
2016-03
期刊：
影响因子：
1.6
通讯作者：
W. Yi;X. Xue;Jinsong Chen;X. Dou;Tingdi Chen;Na Li
中科院分区：
文献类型：
--
作者：
W. Yi;X. Xue;Jinsong Chen;X. Dou;Tingdi Chen;Na Li
本文利用温度梯度模型技术，对位于中国昆明（25.6°N, 103.8°E）的流星雷达数据进行了反演，得到了低纬度观测站的中流层顶温度。估计的温度与宽带发射辐射探测（SABER）的温度一致，并表现出明显的季节和年际变化，主要的光谱峰在年、半年、准90天和三年振荡。但是，温度波动的幅度和优势谱峰比SABER的大。提出了一种考虑流星雷达数据估算斜率温度敏感性的改进方法，用于校正使用温度梯度模型技术获得的较大波动。校正后的温度与SABER观测结果更加吻合，得到的温度精度显著提高。
In this study, mesopause temperatures over a low‐latitude station were derived by applying the temperature gradient model technique to data from a meteor radar installation located in Kunming (25.6°N, 103.8°E), China. The estimated temperatures are in good agreement with Sounding of the Atmosphere by Broadband Emission Radiometry (SABER) temperatures and exhibit clear seasonal and interannual variations with dominant spectral peaks at annual, semiannual, quasi 90 day, and terannual oscillations. However, the amplitudes of the temperature fluctuations and the dominant spectral peaks are larger than those from SABER. An improved method that accounts for the temperature sensitivity of the slope estimated from the meteor radar data was developed to calibrate the larger fluctuations obtained using the temperature gradient model technique. The resulting calibrated temperatures are more consistent with SABER observations, and the accuracy of the derived temperatures is significantly improved.