Assessment of Sentinel-2 and Landsat-8 OLI for Small-Scale Inland Water Quality Modeling and Monitoring Based on Handheld Hyperspectral Ground Truthing

Table 6

Sentinel-2. Results from the application of several formula types to different band index configurations under different atmospheric correction techniques that showed a correlation between the obtained remote sensing data and the Chl-a in situ measurements.

Sentinel-2
Index	Formula	DOS	DSF	ATCOR	EXP	L2A
			Linear	0.56	0.44	0.41	0.49	0.33
Power	0.75		0.45	0.3	0.67	0.29
Logarithm	0.43		0.40	0.33	0.51	0.47
Exponential	0.61		0.36	0.48	0.58	0.41
	Linear	0.64	0.52	0.58	0.43	0.49
	Power	0.84	0.69	0.48	0.68	0.41
	Logarithm	0.80	0.52	0.47	0.61	0.39
	Exponential	0.67	0.65	0.11	0.59	0.37
	Linear	0.34	0.36	0.19	0.49	0.16
	Power	0.79	0.70	0.68	0.71	0.51
	Logarithm	0.50	0.43	0.12	0.48	0.27
	Exponential	0.48	0.26	0.23	037	0.19
	Linear	0.57	0.46	0.45	0.51	0.36
	Power	0.73	0.54	—	0.62	0.31
	Logarithm	0.63	0.31	0.24	0.58	0.41
	Exponential	0.61	0.19	0.14	0.63	0.46
	Linear	0.71	0.10	0.11	0.66	0.49
	Power	0.55	0.39	0.26	0.49	0.21
	Logarithm	0.59	0.47	0.41	0.49	0.37
	Exponential	0.6	0.27	0.29	0.31	0.22