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Chapter 9 Radiometric Correction and Cloud Detection

Chapter 9 Radiometric Correction and Cloud Detection. Typical onboard calibration system of visible to shortwave infrared. Example of the observed and estimated smooth curve of atmospheric optical thickness. Typical configuration of a thermal infrared remote sensor.

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Chapter 9 Radiometric Correction and Cloud Detection

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  1. Chapter 9Radiometric Correction and Cloud Detection

  2. Typical onboard calibration system of visible to shortwave infrared

  3. Example of the observed and estimated smooth curve of atmospheric optical thickness

  4. Typical configuration of a thermal infrared remote sensor

  5. Schematic of temperature based vicarious calibration

  6. Types of noise remaining after the radiometric correction (a): A set of stripe noise in a PRISM image observed near the Kasumigaura Bridge, Ibaraki, Japan, on December 28, 2006. (b): A line of missing data in an ASTER TIR image near Gunma and Nagano prefectures, Japan, on March, 9, 2005. (c): Smear and blooming in an ASTER VNIR image near Futtsu, Chiba, Japan, on December 8, 2005.

  7. Crosstalk mechanism and its correction

  8. Surface radiance rate as a function of wavelength, calculated for desert, vegetation, and ocean at the surface temperature of 300K under the mid-latitude summer atmospheric model using the radiative transfer code, MODTRAN 5.2.

  9. Monthly mean atmospheric veritical profile of temperature and water vapor mixing ratio (Figure 9.8) (February and August of the year 2000 at 30 to 40 degree north latitude)

  10. Nadir transmittance, path radiance,and downward irradiance computed from the model atmosphere of Figure 9.8 using MODTRAN 3.7 Downward irradiance Nadir transmittance Path radiance

  11. Cloud detection tests for visible-infrared multispectral imaging sensors (*)NDVI: Normalized difference vegetation index,X: Executable −: Un-executable

  12. A parallel structure algorithm A cascade structure algorithm

  13. Clear Confidence Level (CCL) Q values obtained by CAI imager aboard the GOSAT over western Pacific Ocean in middle latitude (Nov. 5, 2009).Red and blue pixels denote cloudy and clear, respectively.

  14. CloudSat radar reflectivity (top), CALIPSO Lidar backscatter (middle), and Cloud screening result obtained by combining radar and Lidar signals (bottom). Vertical and horizontal axes are altitude (km) and longitude (degrees), respectively. Data were acquired over the North Pacific Ocean on Oct. 8, 2006.

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