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FAIFloating Algae Index

WaterMultispectralCitation Rank #62

Summary

The Floating Algae Index (FAI) is a water spectral index intended for multispectral sensing. It was introduced in 2009; its source is cited as Chuanmin Hu (2009). A novel ocean color index to detect floating algae in the global oceans. Remote Sensing of Environment, 113(10). https://doi.org/10.1016/j.rse.2009.05.012 .

Based on the latest citation data, this index is in the 80.76th percentile overall, ranking 62 out of 317 indices with citation data. Among the 38 indices published within two years of 2009, it ranks 3 (94.74th percentile). Within the water application domain, it is in the 87.5th percentile and ranks 5 out of 32 indices with citation data. Among the 4 similarly aged water indices, it ranks 1 (100th percentile).

Formula

N - (R + (S1 - R)*((lambdaN - lambdaR)/(lambdaS1 - lambdaR)))

Bands

N

Near-Infrared (NIR).

R

Red.

S1

Short-wave Infrared (SWIR) 1.

Polarizations

No radar polarizations are used in this index.

Constants

lambdaN

NIR central wavelength (nm).

Default valueNot specified
lambdaR

Red central wavelength (nm).

Default valueNot specified
lambdaS1

SWIR1 central wavelength (nm).

Default valueNot specified

Reductions

No contextual reductions are used in this index.

Released under the MIT License.