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Lab 9

Lab 9. Hydrolight and Ecolight. Q1. Imputing measured Chl (z) data. Different models gave us various Rrs. Percent cloud coverage impacts Ed. Kd (1/m). Cloud has no effects on Kd . At wavelength of 445nm and 555nm, Kd has a similar trend as Chl conc. . Depth (m).

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Lab 9

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  1. Lab 9 Hydrolight and Ecolight

  2. Q1. Imputing measured Chl(z) data

  3. Different models gave us various Rrs

  4. Percent cloud coverage impacts Ed.

  5. Kd(1/m) • Cloud has no effects on Kd. • At wavelength of 445nm and 555nm, Kd has a similar trend as Chl conc. Depth (m)

  6. Cloud coverage has no effect on Rrs. • But we had a outlier in our model output.

  7. As cloud coverage increases, μd decreases. • Multiple scattering events cause μd to approach 0.5 with increasing depth. μd Depth(m)

  8. Q2. Import IOPs a b

  9. HydroLight Input: Predicted vs. Measured Rrs

  10. Predicted vs. Measured Rrs Reasonable, given that measurements were taken over a week long period (not ready to ask for my money back yet). Captures the high absorption of CDOM in the blue, something not capture by the case 1 models.

  11. Q3. IOP Case 2 water model • Influence of the mineral concentration on the Rrs • Rrsincreases with the mineral concentration

  12. Q3. IOP Case 2 water model • Influence of the mineral composition on the Rrs

  13. Q4. simulatingopticallyshallow water • Influence of the bottomreflectance on the Rrs • Bahamas - Coralsandbottom • HigherRrs for shallowerbottoms

  14. Influence of the bottomreflectance on two K functions

  15. Q5- hydrolight support user2 hypotheses: Problems caused by wrong backscatter number or data inputBackscatter changes don’t appear to help drop the hydrolight curveEditing out the anomalous data line appears to create the desired shape

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