Sensor

λ (nm)

Equation CHL-a (µg/L)

Regression

Coefficient (R²)

Spatial resolution

EO1

457 - 528

$\text{Chl-a}=0.005\left[\frac{\text{Rrs457}}{\text{Rrs528}}\right]$

0.57

30 m

Sentinel 2

705 - 665

$\text{Chl-a}=\left(\left[\text{Rrs705}/\text{Rrs665}\right]-1.103\right)/0.1072$

0.72

20 m