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Acta Optica Sinica, Volume. 41, Issue 15, 1501002(2021)

Atmospheric CO2 Cooperative Inversion Algorithm Applied to GF-5 Satellite

Shichao Wu1,2, Xianhua Wang1、*, Hanhan Ye1, Chao Li1,2, Yuan An1,2, and Xiaodi Wang1,2
Author Affiliations
  • 1Key Laboratory of Optical Calibration and Characterization, 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 230026, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (13)
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    Figures & Tables(7)
    Schematic diagram of sample space selection process for CO2 profile training

    Fig. 1. Schematic diagram of sample space selection process for CO2 profile training

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    PCA-based statistical inversion flowchart

    Fig. 2. PCA-based statistical inversion flowchart

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    Comparison of inversion results using a physical algorithm and collaborative statistical method. (a) Volume fraction of XCO2; (b) error

    Fig. 3. Comparison of inversion results using a physical algorithm and collaborative statistical method. (a) Volume fraction of XCO2; (b) error

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    Deviation graphs of GMI and OCO-2 inversion results. (a) Error; (b) correlation

    Fig. 4. Deviation graphs of GMI and OCO-2 inversion results. (a) Error; (b) correlation

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    Inversion results distribution map. (a) GMI inversion result; (b) OCO-2 product value

    Fig. 5. Inversion results distribution map. (a) GMI inversion result; (b) OCO-2 product value

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    • Table 1. GMI main instrument parameters

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      Table 1. GMI main instrument parameters

      ParameterTechnical indicator
      O2CO2CH4CO2
      Central wavelength /μm0.7651.5751.652.05
      Spectral range /μm0.759--0.7691.568--1.5831.642--1.6582.043--2.058
      Spectral resolution /cm-10.60.27
      SNR300250
      Radiometric calibrationAbsolute accuracy: 5%Relative accuracy: 2%
      FOV14.6 mrad (10.3 km@705 km)
      Operating modeNadir observation model: 1, 5, 7, 9 points(Default mode is 5 points)Sunlight observation model;Calibration observation model

    • Table 2. GMI and OCO-2 data inversion results

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      Table 2. GMI and OCO-2 data inversion results

      Serial numberVolume fraction of CO2 /106Serial numberVolume fraction of CO2 /106
      GMI inversion resultOCO-2 productGMI inversion resultOCO-2 product
      1404.12405.5513401.85402.87
      2402.56402.8514402.46402.62
      3401.97402.0915402.04402.42
      4402.46403.0116402.04402.42
      5401.69401.8217403.43403.59
      6401.09400.9118404.67405.01
      7400.74401.1819398.45400.03
      8402.84403.2120402.74402.52
      9400.85401.0821399.36399.75
      10402.73402.3022403.63403.66
      11401.31401.5523402.14403.05
      12401.86401.8724403.40403.56
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    Shichao Wu, Xianhua Wang, Hanhan Ye, Chao Li, Yuan An, Xiaodi Wang. Atmospheric CO2 Cooperative Inversion Algorithm Applied to GF-5 Satellite[J]. Acta Optica Sinica, 2021, 41(15): 1501002

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Dec. 23, 2020

    Accepted: Mar. 9, 2021

    Published Online: Aug. 11, 2021

    The Author Email: Wang Xianhua (xhwang@aiofm.ac.cn)

    DOI:10.3788/AOS202141.1501002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology