Physics-based approach
Example: Ocean Colour - Chlorophyll concentration

Physics-based approach : Insert caption here.
References:
Gordon HR, Clark DK, Brown JW, Brown OB, Evans RH, et al. 1983. Phytoplankton pigment concentrations in the Middle Atlantic Bight: comparison of ship determinations and CZCS estimates. Appl. Opt. 22:20-36
O'Reilly, J. E., S. Maritorena, B. G. Mitchell, D. A. Siegel, K. L. Carder, S. A. Garver, M. Kahru and C. McClain (1998). "Ocean color chlorophyll algorithms for SeaWiFS." Journal of Geophysical Research-Oceans 103(C11): 24937-24953.
McClain, C. R. (2009). "A Decade of Satellite Ocean Color Observations." Annual Review of Marine Science 1: 19-42.