Calibration for the Solar Reflective Bands of Medium Resolution Spectral Imager Onboard FY-3A

Hu, Xiuqing; Sun, Lin; Liu, Jingjng; Ding, Lei; Wang, Xianghua; Li, Yuan; Yong, Zhang; Xu, Na; Lin, Chunye

doi:10.1109/tgrs.2012.2214226

Cited by 38 publications

(21 citation statements)

References 42 publications

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“…The result of the 650 nm band shows the largest increase of the response, reaching to about 2.45%. This conclusion agrees with the analysis of visible-NIR onboard calibrator (VOC) [19]. However for band 20 (1,030 nm), there is a total of a 15.87% decrease.…”

Section: The Degradation Of Fy-3a/mersi By DCC Methodssupporting

confidence: 90%

“…Especially the indexes in the three water vapor absorption bands are under 2%. These absorption bands (bands [17][18][19] are often difficult to handle by the traditional vicarious radiometric calibration method, such as site vicarious calibration. However, the DCC spectra are nearly not affected by water vapor absorption, since little water vapor is above the DCC.…”

Section: The Degradation Of Fy-3a/mersi By DCC Methodsmentioning

confidence: 99%

“…Since 2002, vicarious calibration based on the Dunhuang Radiometric Calibration Site became the operational calibration method for the Fengyun satellites [19,20] Comparisons of these four methods for total degradation of FY-3A/MERSI are summarized in Table 5. For most bands, there is good consistency of the total degradation with a maximum bias less than 3%, except for bands 11, 18 and 19.…”

Section: Comparison With Other Methodsmentioning

confidence: 99%

“…Additionally, due to its larger sample size and fewer a priori data being required, it is better to apply this method to the re-calibration of the historical data of different satellites and to evaluate the accuracy of other calibration methods. [19]. The SV provides the dark signal.…”

Section: Introductionmentioning

confidence: 99%

“…The VOC is the first experimental onboard visible calibration device for Fengyun series sensors. It is composed of three main optical components: a 6-cm diameter integrating mini-sphere, a beam expanding system and trap standard detectors [19]. It is used to monitor the radiometric response changes that arise either from the MERSI degradation or a change in the VOC's output.…”

Section: Introductionmentioning

confidence: 99%

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The Application of Deep Convective Clouds in the Calibration and Response Monitoring of the Reflective Solar Bands of FY-3A/MERSI (Medium Resolution Spectral Imager)

Chen

et al. 2013

Remote Sensing

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Based on simulated reflectance, deep convective clouds (DCC) can be used as an invariant target to monitor the radiometric response degradation of the FY-3A/MERSI (Medium Resolution Spectral Imager) reflective solar bands (RSBs). The long-term response of the MERSI RSBs can easily be predicted using a quadratic fit of the monthly DCC mean reflectance, except for bands 6 and 7, which suffer from instrument anomalies. DCC-based degradations show that the blue bands (λ < 500 nm) and water-vapor bands have degraded significantly, whereas for near-infrared bands, the total degradations in four years are within 3% (excluding bands 3 and 20). For most bands, the degradation rates are greatest during the first year in orbit and decrease over time. The FY-3A/MERSI degradation results derived from DCC are consistent within 2.5%, except for bands, 11, 18 and 19, when compared with Aqua/MODIS(Moderate Resolution Imaging Sepetroradiometer) inter-calibration, multi-site invariant earth target calibration and the CRCS(Chinese Radiometric Calibration Site) Dunhuang desert vicarious calibration methods. Overall, the 2σ/mean degradation uncertainty for most MERSI bands was within 3%, validating the temporal stability of the DCC monthly mean reflectances. The DCC method has reduced the degradation uncertainties for MERSI water vapor bands over other methods. This is a

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Section: The Degradation Of Fy-3a/mersi By DCC Methodssupporting

confidence: 90%

Section: The Degradation Of Fy-3a/mersi By DCC Methodsmentioning

confidence: 99%

Section: Comparison With Other Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Application of Deep Convective Clouds in the Calibration and Response Monitoring of the Reflective Solar Bands of FY-3A/MERSI (Medium Resolution Spectral Imager)

Chen

et al. 2013

Remote Sensing

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An investigation of the implications of lunar illumination spectral changes for Day/Night Band‐based cloud property retrieval due to lunar phase transition

et al. 2017

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The Moon reflects sunlight like a huge mirror hanging in the sky at night, which presents the obviously periodical changes in its luminance or irradiance due to Sun‐Earth‐Moon geometry variation. The potential effect of the periodical changes in lunar phase angle on nighttime Day/Night Band (DNB) radiative transfer simulation in the presence of cloud has seldom been reported thus far. In this study, a radiative transfer model is developed by coupling the lunar light source with various Sun‐Earth‐Moon geometries. To elucidate the stability of DNB‐averaged cloud bulk scattering properties, we simulate nighttime reflectance and radiances under four typical lunar phase angles (0°, 45°, 90°, and 135°) from 7 April 2016 to 8 May 2016 (e.g., two lunar cycles). Explicit simulation analyses indicated that DNB‐averaged cloud bulk scattering properties exhibit weak sensitivity to lunar phase angles. The maximum DNB reflectance differences between any and 90° lunar phase angles are less than 0.05% (0.01%) in the presence of water (ice) clouds, indicating a negligible effect of periodically changes on lunar spectral irradiances. Our findings suggest that the differences of reflectance at lunar phase angle = 90° are less than approximately 0.05% (water cloud)/0.01% (ice cloud), much smaller than 11% radiometric calibration uncertainties of DNB. This means that these differences could be ignored in both nighttime cloud property retrieval and DNB radiative transfer modeling.

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Development of Self-Calibration Spectral Radiometer of Correlated Photons on Orbit

Liu

Gao

et al. 2017

Springer Proceedings in Physics

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Calibration for the Solar Reflective Bands of Medium Resolution Spectral Imager Onboard FY-3A

Cited by 38 publications

References 42 publications

The Application of Deep Convective Clouds in the Calibration and Response Monitoring of the Reflective Solar Bands of FY-3A/MERSI (Medium Resolution Spectral Imager)

The Application of Deep Convective Clouds in the Calibration and Response Monitoring of the Reflective Solar Bands of FY-3A/MERSI (Medium Resolution Spectral Imager)

An investigation of the implications of lunar illumination spectral changes for Day/Night Band‐based cloud property retrieval due to lunar phase transition

Development of Self-Calibration Spectral Radiometer of Correlated Photons on Orbit

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