| Seasonal Variations of Mesospheric Densities Observed by Rayleigh Lidar at Golmud,Qinghai |
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| 作者姓名： | DAI Yaru PAN Weilin QIAO Shuai HU Xiong YAN Zhaoai BAN Chao |
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| 作者单位： | 1 Near-space Environment Laboratory, National Space Science Center, Chinese Academy of Sciences, Beijing 100190; |
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| 基金项目： | Supported by the National Key R and D Program of China;and the National Natural Science Foundation of China |
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| 摘 要： | From Aug. 2013 to Oct. 2015, a Rayleigh lidar has been used to study the middle atmosphere at Golmud (36.25°N, 94.54°E), Qinghai, located in the northeastern part of the Tibetan Plateau. Mesospheric density profiles from 50 to 90 km were retrieved based on 205 nights of lidar observation, with a total of 1616 hours of operation. We compared our lidar density measurements with SABER observations onboard TIMED satellite and MSIS-00 model data. The results showed that the annual mean density measured by lidar agreed well with SABER data, but both were lower than that of MSIS-00. All datasets exhibited dominant annual oscillation in the mesosphere. From 63 to 85 km, the annual amplitude of lidar density is larger than those of SABER and MSIS-00. PDD (Percentage of Density Difference) was calculated to investigate the mesospheric density climatology. The largest density variations of lidar, MSIS-00, and SABER occurred at around 72 km. Both lidar and SABER PDD reached their maximum in May, about one month earlier than the MSIS-00; while the minimum PDD appeared in late December for all datasets.
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| 关 键 词： | Lidar SABER MSIS model Mesospheric density Seasonal variations |
| 收稿时间： | 2019-02-25 |
Seasonal Variations of Mesospheric Densities Observed by Rayleigh Lidar at Golmud,Qinghai |
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| DAI Yaru,PAN Weilin,QIAO Shuai,HU Xiong,YAN Zhaoai,BAN Chao.Seasonal Variations of Mesospheric Densities Observed by Rayleigh Lidar at Golmud,Qinghai[J].Chinese Journal of Space Science,2020,40(2):207-214. |
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| Institution: | 1 Near-space Environment Laboratory, National Space Science Center, Chinese Academy of Sciences, Beijing 100190;2 Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;3 University of Chinese Academy of Sciences, Beijing 100049;4 Zhongneng Power-Tech Development Company of Limited, Beijing 100034 |
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| Abstract: | From Aug. 2013 to Oct. 2015, a Rayleigh lidar has been used to study the middle atmosphere at Golmud (36.25°N, 94.54°E), Qinghai, located in the northeastern part of the Tibetan Plateau. Mesospheric density profiles from 50 to 90 km were retrieved based on 205 nights of lidar observation, with a total of 1616 hours of operation. We compared our lidar density measurements with SABER observations onboard TIMED satellite and MSIS-00 model data. The results showed that the annual mean density measured by lidar agreed well with SABER data, but both were lower than that of MSIS-00. All datasets exhibited dominant annual oscillation in the mesosphere. From 63 to 85 km, the annual amplitude of lidar density is larger than those of SABER and MSIS-00. PDD (Percentage of Density Difference) was calculated to investigate the mesospheric density climatology. The largest density variations of lidar, MSIS-00, and SABER occurred at around 72 km. Both lidar and SABER PDD reached their maximum in May, about one month earlier than the MSIS-00; while the minimum PDD appeared in late December for all datasets. |
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