Acta Optica Sinica, Volume. 37, Issue 8, 0801003(2017)
Automated Radiation Calibration Method Based on DunhuangRadiometric Calibration Site
Figures & Tables(9)
Fig. 2. Influence of different AOD and ATR observed value error on reflectivity error at top of atmosphere
Fig. 3. Difference of equivalent reflectivity between ASD measured data and ATR observed data
Fig. 4. Ground reflectivity of Dunhuang site measured by ASD from the year of 2011 to 2015
Table 1. Atmospheric parameters and observation geometry parameters at satellite transit time
View tableTable 1. Atmospheric parameters and observation geometry parameters at satellite transit time
Date AOD Water vapor density /(g·cm -2 ) O 3 content /DU Solar zenith angle /(°) Satellite zenith angle /(°) Relative azimuth angle /(°) 2015-08-21 0.122 1.0003 297.4 30.07 25.62 128.47 2015-09-13 0.057 0.5284 298.0 38.14 15.19 127.64 2015-09-20 0.058 0.8644 277.2 41.36 3.97 127.81 2015-09-29 0.057 1.0058 272.1 44.59 15.20 126.21 2015-10-04 0.061 0.5353 298.7 48.72 18.66 309.70 2015-10-08 0.059 0.3661 302.3 48.19 25.34 124.70 2015-10-13 0.059 0.5836 286.7 51.27 7.59 306.46 2015-10-22 0.060 0.6129 288.3 54.10 3.81 119.56 2015-10-27 0.061 0.3299 303.8 57.46 28.86 307.98 2015-10-31 0.060 0.9927 285.2 56.68 14.83 124.73 2015-11-07 0.077 0.5817 317.4 58.79 3.61 121.88 2015-11-12 0.058 0.5128 301.9 61.69 28.86 305.62 2015-11-25 0.054 0.4370 271.2 62.27 25.34 119.46 2015-12-02 0.060 0.2636 285.0 63.78 15.01 118.64 2015-12-09 0.060 0.4296 288.2 64.80 3.79 121.79 2016-01-15 0.067 0.3557 322.1 63.74 28.76 298.27 2016-03-07 0.239 0.3822 302.9 46.56 14.83 118.11
Table 2. Relative deviation D , mean relative deviation and standard deviation between Rc and Rm %
View tableTable 2. Relative deviation D , mean relative deviation and standard deviation between Rc and Rm %
Date D λ 1λ 2λ 3λ 4λ 5λ 6λ 72015-08-21 -0.44 -1.15 1.57 -0.41 -0.25 -3.59 0.09 2015-09-13 0.87 0.99 0.80 -0.84 -0.05 -2.13 1.87 2015-09-20 0.86 1.18 -0.08 -1.07 -0.31 0.19 2.86 2015-09-29 1.31 2.64 0.75 -1.21 2.22 -0.07 3.50 2015-10-04 0.50 1.27 -1.69 -2.25 -0.82 0.64 2.72 2015-10-08 2.70 2.80 2.85 0.63 3.04 -3.42 2.00 2015-10-13 -0.42 -0.08 -0.27 0.29 -0.36 -2.58 2.43 2015-10-22 -2.50 -0.98 -1.74 -4.12 1.35 0.48 3.04 2015-10-27 0.59 1.77 2.51 -1.57 2.92 -2.93 3.57 2015-10-31 -1.20 0.38 3.40 -3.68 4.11 0.74 3.81 2015-11-07 -2.34 -0.13 -0.96 -4.67 3.18 0.21 4.66 2015-11-12 1.43 3.30 2.69 -0.78 3.09 1.70 5.10 2015-11-25 2.50 4.38 0.38 -2.41 2.08 0.66 6.24 2015-12-02 1.97 2.91 2.43 -0.99 2.67 2.40 0.13 2015-12-09 1.37 3.34 -1.18 -1.35 3.41 0.44 1.96 2016-01-15 2.59 3.86 -0.12 -2.04 3.85 2.64 5.68 2016-03-07 -0.28 -1.05 3.24 1.61 1.91 1.03 3.23 Mean relative deviation 0.56 1.50 0.86 -1.46 1.88 -0.21 3.11 Standard deviation 1.58 1.80 1.75 1.65 1.64 1.97 1.70
Table 3. Relative deviation of results obtained by automated radiation calibration method and reflectance-based method%
View tableTable 3. Relative deviation of results obtained by automated radiation calibration method and reflectance-based method%
Method Relative deviation λ 1λ 2λ 3λ 4λ 5λ 6λ 7Automated radiation calibration method -0.44 -1.15 1.57 -0.41 -0.25 -3.59 0.09 Reflectance-based method -1.00 -1.98 0.49 -0.39 0.94 -0.81 5.29
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Jiayan Lü, Mingyuan He, Lin Chen, Xiuqing Hu, Xin Li. Automated Radiation Calibration Method Based on DunhuangRadiometric Calibration Site[J]. Acta Optica Sinica, 2017, 37(8): 0801003
Paper Information
Category: Atmospheric Optics and Oceanic Optics
Received: Mar. 8, 2017
Accepted: --
Published Online: Sep. 7, 2018
The Author Email: Chen Lin (chenlin@cma.gov.cn)
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