Optical Depth Inversion Technique Under Joint Cloud Measurement System

Fig. 3. All-sky infrared radiation distribution and all-sky optical depth distribution in the case of single-layer cloud. (a) All-sky infrared radiation distribution; (b) all-sky optical depth distribution

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Fig. 4. All-sky infrared radiation distribution and all-sky optical depth distribution in the case of two-layer cloud. (a) All-sky infrared radiation distribution; (b) all-sky optical depth distribution

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Table 1. Downward infrared radiance at zenith under different cloud base heights and optical depths

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Table 1. Downward infrared radiance at zenith under different cloud base heights and optical depths

Cloud baseheight /km	Radiance /(W·m^-2·Sr^-1)
Cloud baseheight /km	D=0	D=1	D=2	D=3	D=4	D=5	D=6	D=7	D=8	D=9	D=10
1	10.3	18.2	22.9	25.9	28	29.3	30.3	31.0	31.4	31.7	32.0
2	10.3	17.4	21.7	24.4	26.2	27.4	28.3	28.9	29.3	29.6	29.8
3	10.3	16.7	20.4	22.8	24.4	25.4	26.2	26.7	27.1	27.3	27.5
4	10.3	16	19.2	21.2	22.5	23.5	24.1	24.6	24.9	25.1	25.3
5	10.3	15.2	17.9	19.6	20.8	21.5	22.1	22.5	22.7	22.9	23.1
6	10.3	14.5	16.7	18.1	19.0	19.6	20	20.3	20.6	20.7	20.9
7	10.3	13.8	15.5	16.6	17.3	17.7	18.1	18.3	18.5	18.6	18.7
8	10.3	13.2	14.6	15.3	15.8	16.1	16.4	16.6	16.7	16.8	16.9
10	10.3	12.5	13.4	13.8	14	14.2	14.3	14.4	14.4	14.5	14.5
12	10.3	12.4	13.2	13.6	13.8	13.9	14	14	14.1	14.1	14.1

Table 2. Inversion range of optical depth for different cloud base heights
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Table 2. Inversion range of optical depth for different cloud base heights
The range of cloud base height /km ≤2 2--5 5--6 6--8 >8
The range of optical depth 0--6 0--5 0--4 0--3 0--2

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Ting Zhang, Lei Liu, Taichang Gao, Shuai Hu. Optical Depth Inversion Technique Under Joint Cloud Measurement System[J]. Laser & Optoelectronics Progress, 2020, 57(19): 192802

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