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Terra/Aqua band 1 and 2 calibration evaluation over Libyan desert site

Terra/Aqua band 1 and 2 calibration evaluation over Libyan desert site. Eric Vermote. Terra band 1 and band 2 directional surface reflectance. Terra band 1 and band 2 surface reflectance normalized for BRDF at nadir view and solar zenith angle of 45 degrees.

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Terra/Aqua band 1 and 2 calibration evaluation over Libyan desert site

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  1. Terra/Aqua band 1 and 2 calibration evaluation over Libyan desert site Eric Vermote

  2. Terra band 1 and band 2 directional surface reflectance

  3. Terra band 1 and band 2 surface reflectance normalized for BRDF at nadir view and solar zenith angle of 45 degrees.

  4. Terra NDVI computed from band 1 and band 2 surface reflectance normalized for BRDF at nadir view and solar zenith angle of 45 degrees.

  5. Aqua band 1 and band 2 surface reflectance normalized for BRDF at nadir view and solar zenith angle of 45 degrees.

  6. Aqua NDVI computed from band 1 and band 2 surface reflectance normalized for BRDF at nadir view and solar zenith angle of 45 degrees.

  7. Comparison of Terra and Aqua NDVI Diff=0.007 Diff=0.003

  8. Comparison of Terra and Aqua band1 3% 1.2%

  9. Comparison of Terra and Aqua band2 1.6% 0.6%

  10. Band 1 smooth data

  11. Band 2 smooth data

  12. Conclusion • The systematic difference are making Aqua and Terra less and less comparable and needs to be investigated further

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