One of the most intense areas of study in all of Earth Sciences is carbon cycling because of its potential influence in global warming and climate change. Natural waters contain large reservoirs of carbon that include pools of particulate organic carbon (POC) and dissolved organic carbon (DOC). Both of these parameters can been derived from IOPs, where typically POC is estimated from measurements of particulate attenuation or scattering and DOC is estimated from absorption measurements in the dissolved fraction or the fluorescence of humic substances. Since empirical relationships between biogeochemical properties and associated IOPs can vary due to changes in the composition of the dissolved and particulate pools, these relationships may be region- and time-specific.
WET Labs has developed a special beam attenuation meter to detect Particulate Organic Carbon (POC). Vertical profiling floats with sensors for measuring light transmission, fluorescence, and backscattering have also been created for the use of detecting POC. This allows for the observation of carbon parameters on time scales related to biological carbon production and export. Floats can be used in validation of global climate/biogechemical models for particulate inorganics carbon (PIC) and particulate organic carbon (POC). Another objective that can be met is estimating net community production in the eupohotic zone and diurnal variability in the upper water column.
ECO FL fluorometers measure fluorescence from chlorophyll-a, CDOM, uranine, rhodamine, and phycoyanin and phycoerythrin.
The Environmental Characterization Optics (ECO) series of sensors incorporates a common set of options with a single basic design to make them ideal for a wide variety of deployments.
A flexible platform that expands sensor capabilities of profiling floats by providing multispectral radiometry, scattering, beam attenuation, chlorophyll, and CDOM measurements to complement the temperature, salinity and oxygen measurements of the profiling float.