Evaluating pansharpening techniques for enhanced Chlorophyll-a monitoring with multispectral satellite data | 2026 Publication type A1 Journal article (refereed), original research Author(s) Heikkinen Sara, Duma Zina-Sabrina, Sihvonen Tuomas, Reinikainen Satu-Pia Planetary resources Earth-Surface Processes Environmental Engineering Environmental Science LUT School of Engineering Sciences