Algorithm of Retrieving Boundary Layer Height Based on Raman Lidar Water Vapor Data

Chu Yufei; Liu Dong; Wu Decheng; Wang Yingjian

doi:10.3788/CJL202047.1204009

Chinese Journal of Lasers, Volume. 47, Issue 12, 1204009(2020)

Algorithm of Retrieving Boundary Layer Height Based on Raman Lidar Water Vapor Data

Chu Yufei^1,2, Liu Dong^1,2, Wu Decheng^1,2, and Wang Yingjian^1,2、*

¹Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China

²University of Science and Technology of China, Hefei, Anhui 230036, China

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Figures & Tables(8)

Fig. 1. Flow chart of PBL height is obtained by DP segmentation algorithm

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Fig. 2. Vertical profiles based on water vapor data of Raman lidar at different times. (a) 5:30; (b) 11:30; (c) 17:30; (d) 21:30

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Fig. 3. Boundary layer heights retrieved by DP slope algorithm

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Fig. 4. Boundary layer heights based on Raman lidar water vapor data and sounding data

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Fig. 5. Height agreement of boundary layer based on Raman lidar and airsonde data

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Fig. 6. Comparison of boundary layer heights based on Raman lidar water vapor data and radiosonde data

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Table 1. Raman lidar related parameters at SGP site^[14]

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Table 1. Raman lidar related parameters at SGP site^[14]

Parameter	Content
Laser	Tripled Nd∶YAG
Wavelength/nm	355
Pulse energy/mJ	300--400
Pulse repetition frequency/Hz	30
Beam diameter/cm	13 (~0.1mrad divergence)
Bandwidth/cm^-1	~2
Filter transmission/%	30--40
WFOV/mrad	2
NFOV/mrad	0.3
Datastream	Sgpdlfptc1.b1

Table 2. Relationship between potential temperature and water vapor content
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Table 2. Relationship between potential temperature and water vapor content
Potential temperature/K Water vapor/(g·kg^-1)
263 0
273 4
283 8
293 12
303 16
313 20
323 24

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Chu Yufei, Liu Dong, Wu Decheng, Wang Yingjian. Algorithm of Retrieving Boundary Layer Height Based on Raman Lidar Water Vapor Data[J]. Chinese Journal of Lasers, 2020, 47(12): 1204009

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