**Appendix A**

In this appendix, we include the transect estimations of the red band and the NDVI and compare their view zenith angle dependency of the directional data compared to each BRDF normalization method.

**Figure A1.** HLS red surface reflectance transect values versus the view zenith angle (VZA).

**Figure A2.** HLS NDVI transect values versus the view zenith angle (VZA).
