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Volume 23 Issue 5

Sep.  2006

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2006 >  23(5): 711-725

Indo-Japanese Lidar Observations of the Tropical Middle Atmosphere During 1998 and 1999

  • 1.

    National MST Radar Facility, P. B. No: 123, Tirupati–517 502, A. P. India,Department of Physics, S.V. University, Tirupati–517 502, A. P. India,Department of Physics, S.V. University, Tirupati–517 502, A. P. India


doi: 10.1007/s00376-006-0711-0

  • A state-of-the art Rayleigh and Mie backscattering lidar was set up at Gadanki (13.5N, 79.2E) in the Tropics in India. Using this system, regular observations of upper tropospheric clouds, aerosols at stratospheric heights and atmospheric temperatures in the range from 30 to 80 km were made. In this paper, the data collected during the period of 1998–99 were selected for systematic investigation and presentation. The Mie scattering lidar system is capable of measuring the degree of depolarization in the laser backscattering. Several tropical cirrus cloud structures have been identified with low to moderate ice content. Occasionally, thin sub-visible cirrus clouds in the vicinity of the tropical tropopause have also been detected. The aerosol measurements in the upper troposphere and lower stratosphere show low aerosol content with a vertical distribution up to 35 km altitude. Rayleigh-scattering lidar observations reveal that at the tropical site, temperature inversion occurs at mesospheric heights. Atmospheric waves have induced perturbations in the temperatures for several times at the upper stratospheric heights. A significant warming in the lower mesosphere associated with a consistent cooling in the upper stratospheric heights is observed particularly in the winter season during the events of sudden stratospheric warming (SSW).
  • [1] Yun HE, Fan YI, Fuchao LIU, Zhenping YIN, Jun ZHOU, 2022: Ice Nucleation of Cirrus Clouds Related to the Transported Dust Layer Observed by Ground-Based Lidars over Wuhan, China, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 2071-2086.  doi: 10.1007/s00376-021-1192-x
    [2] Kevin HAMILTON, 2006: High Resolution Global Modeling of the Atmospheric Circulation, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 842-856.  doi: 10.1007/s00376-006-0842-3
    [3] Debashis NATH, CHEN Wen, 2013: Investigating the Dominant Source for the Generation of Gravity Waves during Indian Summer Monsoon Using Ground-based Measurements, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 153-166.  doi: 10.1007/s00376-012-1273-y
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    [10] Jianjun LIU, Zhanqing LI, ZHENG Youfei, Maureen CRIBB, 2015: Cloud-Base Distribution and Cirrus Properties Based on Micropulse Lidar Measurements at a Site in Southeastern China, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 991-1004.  doi: 10.1007/s00376-014-4176-2
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    • Manuscript History

    Manuscript received: 10 September 2006
    Manuscript revised: 10 September 2006
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Indo-Japanese Lidar Observations of the Tropical Middle Atmosphere During 1998 and 1999

    • 1. National MST Radar Facility, P. B. No: 123, Tirupati–517 502, A. P. India,Department of Physics, S.V. University, Tirupati–517 502, A. P. India,Department of Physics, S.V. University, Tirupati–517 502, A. P. India
    • Manuscript received: 2006-09-10
    • Manuscript revised: 2006-09-10

    Abstract: A state-of-the art Rayleigh and Mie backscattering lidar was set up at Gadanki (13.5N, 79.2E) in the Tropics in India. Using this system, regular observations of upper tropospheric clouds, aerosols at stratospheric heights and atmospheric temperatures in the range from 30 to 80 km were made. In this paper, the data collected during the period of 1998–99 were selected for systematic investigation and presentation. The Mie scattering lidar system is capable of measuring the degree of depolarization in the laser backscattering. Several tropical cirrus cloud structures have been identified with low to moderate ice content. Occasionally, thin sub-visible cirrus clouds in the vicinity of the tropical tropopause have also been detected. The aerosol measurements in the upper troposphere and lower stratosphere show low aerosol content with a vertical distribution up to 35 km altitude. Rayleigh-scattering lidar observations reveal that at the tropical site, temperature inversion occurs at mesospheric heights. Atmospheric waves have induced perturbations in the temperatures for several times at the upper stratospheric heights. A significant warming in the lower mesosphere associated with a consistent cooling in the upper stratospheric heights is observed particularly in the winter season during the events of sudden stratospheric warming (SSW).

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