Continuous measurements of chlorophyll-a concentration in the Pacific Ocean by shipborne laser fluorometer and radiometer: Comparison with SeaWiFS data

The results of comparisons of chlorphyll-a concentrations, measured using different methods in various regions of the Pacific, are presented. The measurements were made simultaneously from a moving ship using both a laser fluorometer and a spectrometer for measurements of the spectral distribution of the upwelling radiation. Two-band and multispectral algorithms were used to derive the pigment concentration from the upwelling radiation. The chlorophyll a concentrations measured by the shipborne instruments are compared with data obtained by SeaWiFS (the Sea-viewing Wide Field-of-View Sensor).