Influence of CDOM and particle composition on ocean color of the Eastern New Caledonia Lagoon during the CALIOPE cruises

The ocean color of the Eastern New Caledonia Lagoon, a UNESCO World Heritage Site renowned for its marine biodiversity, is significantly influenced by chromophoric dissolved organic matter (CDOM) and particle composition. High rainfall events can introduce substantial CDOM and particulate loads, impacting ecosystem functioning and potentially causing localized effects from river runoff and sewage effluents. The study, conducted during two oceanographic cruises (CALIOPE 1 in 2011 and CALIOPE 2 in 2014), employed multi- and hyper-spectral radiometers alongside inherent optical property measurements to assess these influences. Findings highlight the importance of spatial variations in flushing times on trophic states, while also evaluating the performance of ocean color algorithms using a Linear Matrix Inversion method. This research provides critical tools for remote sensing in this under-sampled coastal region, offering insights into the complex interactions between optical properties and ecosystem dynamics.

Dupouy, C., Röttgers, R., Tedetti, M., Martias, C., Murakami, H., Doxaran, D., Lantoine, F., Rodier, M., Favareto, L., Kampel, M., Goutx, M., & Frouin, R. J. (2014). Influence of CDOM and particle composition on ocean color of the Eastern New Caledonia Lagoon during the CALIOPE cruises. Ocean Remote Sensing and Monitoring from Space, 9261, 92610M. https://doi.org/10.1117/12.2073309