• Chinese Optics Letters
  • Vol. 13, Issue 4, 041001 (2015)
Kaitao Li1,2, Zhengqiang Li1,*, Donghui Li1, Wei Li3..., Luc Blarel4, Philippe Goloub4, Torres Benjamin4, Hua Xu1, Yisong Xie1, Weizhen Hou1, Li Li1 and Xingfeng Chen1|Show fewer author(s)
Author Affiliations
  • 1State Environmental Protection Key Laboratory of Satellite Remote Sensing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Hefei University of Technology, Hefei 230009, China
  • 4University of Lille 1, Lille 59655, France
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    DOI: 10.3788/COL201513.041001 Cite this Article Set citation alerts
    Kaitao Li, Zhengqiang Li, Donghui Li, Wei Li, Luc Blarel, Philippe Goloub, Torres Benjamin, Hua Xu, Yisong Xie, Weizhen Hou, Li Li, Xingfeng Chen, "Transfer method to calibrate the normalized radiance for a CE318 Sun/sky radiometer," Chin. Opt. Lett. 13, 041001 (2015) Copy Citation Text show less
    Matrix measurements of radiometer #350. The left one shows the 3D surface map of the raw measurements taken in Beijing on August 20, 2014 at 03:00:00 (UTC), while the right one shows the plane map of the measurements.
    Fig. 1. Matrix measurements of radiometer #350. The left one shows the 3D surface map of the raw measurements taken in Beijing on August 20, 2014 at 03:00:00 (UTC), while the right one shows the plane map of the measurements.
    Comparison of one year’s averaged inversion residuals (difference between the fitted and measured normalized radiance) corresponding to the AERONET calibrations and the transfer method in ALM geometry; R¯ denotes the averaged residual of the inversion.
    Fig. 2. Comparison of one year’s averaged inversion residuals (difference between the fitted and measured normalized radiance) corresponding to the AERONET calibrations and the transfer method in ALM geometry; R¯ denotes the averaged residual of the inversion.
    Comparison of retrievals corresponding to the AERONET calibrations and the transfer method in ALM geometry. The vertical lines mean the min and max values of the retrievals.
    Fig. 3. Comparison of retrievals corresponding to the AERONET calibrations and the transfer method in ALM geometry. The vertical lines mean the min and max values of the retrievals.
    WV (nm)10201640870675440500
    V09885.211303.826820.218751.110868.414905.4
    Ca (W/m2/sr/nm/DN)0.018020.002470.017080.019540.039560.03104
    Ck (W/m2/sr/nm/DN)0.002250.000310.004270.004880.009880.00776
    E0 (W/m2/nm)0.707760.232730.954321.515771.841431.92228
    Table 1. Calibration Coefficients of Radiometer #350 on November 2, 2009 and October 28, 2009
    WV (nm)10201640870675440500
    Diff. in SPP L (%)0.320.280.190.270.150.18
    Diff. in ALM L (%)0.520.500.540.570.210.55
    Table 2. Average Differences in Normalized Radiance L′ Based on AERONET Calibration Between Double 6° Sky Measurements for Radiometer #350 in the Year 2010
    Error sourcesUncertainties (%)
    ΔΩv/Ωv1.5
    Δ(LGHGa)/LGHGa0.5
    ΔV0/V0 (master, field)0.5, 1.5
    ΔVa/Va0.5
    Others0.5
    Total2.0 (master)/2.4(field)
    Table 3. Uncertainties Estimated on the Normalized Radiance Based on the Transfer Method
    Kaitao Li, Zhengqiang Li, Donghui Li, Wei Li, Luc Blarel, Philippe Goloub, Torres Benjamin, Hua Xu, Yisong Xie, Weizhen Hou, Li Li, Xingfeng Chen, "Transfer method to calibrate the normalized radiance for a CE318 Sun/sky radiometer," Chin. Opt. Lett. 13, 041001 (2015)
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