Depolarization Property of Cirrus Clouds Over Hanoi

Tien Pham Minh, Tuan Nguyen Xuan, Trung Dinh Van, Manh Le Duy, Hai Bui Van
Author affiliations

Authors

  • Tien Pham Minh Ho Chi Minh City Institute of Physics, Vietnam Academy of Science and Technology, No 1 Mac Dinh Chi, Ben Nghe, District 1, Ho Chi Minh City, Vietnam and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam
  • Tuan Nguyen Xuan Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
  • Trung Dinh Van Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
  • Manh Le Duy Institute of Research and Development, Duy Tan University, No. 3 Quang Trung, Da Nang, Vietnam
  • Hai Bui Van Le Quy Don Technical University, 236 Hoang Quoc Viet, North Tu Liem, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/27/4/10836

Keywords:

lidar, atmosphere, depolarization

Abstract

Cirrus cloud is one of the most commonly occurring cloud types globally. The clouds are found mainly to consist of floating ice crystals, which can reflect strongly incoming radiation. Lidar measurements provide an opportunity to study the microphysics and ice compositions of cirrus clouds. We have developed a polarization lidar system to measure the depolarization characteristics of the lower atmosphere over Hanoi. From our measurements of cirrus clouds over the period from 2010 to 2012, the depolarization ratio of cirrus clouds is found to be very high ranging from 20% up to 80{\%}, indicating large fraction of backscattering from ice crystals. We find a trend of increasing depolarization ratio with height and decreasing temperature. We also compare our lidar measurements with other results obtained by lidar technique in other regions of the world.

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References

References

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Published

15-12-2017

How to Cite

[1]
T. Pham Minh, T. Nguyen Xuan, T. Dinh Van, M. Le Duy and H. Bui Van, Depolarization Property of Cirrus Clouds Over Hanoi, Comm. Phys. 27 (2017) 339. DOI: https://doi.org/10.15625/0868-3166/27/4/10836.

Issue

Vol. 27 No. 4 (2017)

Section

Papers

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Received 26-10-2017
Accepted 30-11-2017
Published 15-12-2017