Volume 40 Issue 2
Mar.  2020
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Article Navigation >  Chinese Journal of Space Science  > 2020  >  40(2): 207-214
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. doi: 10.11728/cjss2020.02.207
Citation: 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. doi: 10.11728/cjss2020.02.207
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Seasonal Variations of Mesospheric Densities Observed by Rayleigh Lidar at Golmud, Qinghai

doi: 10.11728/cjss2020.02.207 cstr: 32142.14.cjss2020.02.207

  • 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

Funds:

Supported by the National Key R and D Program of China (2018YFC1407301, 2016YFC1400301) and the National Natural Science Foundation of China (41127901)

More Information
  • Author Bio:

    DAI Yaru,E-mail:panweilin@mail.iap.ac.cn

  • Received Date: 2019-02-25
  • Rev Recd Date: 2019-12-25
  • Publish Date: 2020-03-15
    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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