Although the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Calibration and Validation Program relies on the scientific community for the collection of bio-optical and atmospheric correction data as well as for algorithm development, it does have the responsibility for evaluating and comparing the algorithms and for ensuring that the algorithms are properly implemented within the SeaWiFS Data Processing System. This report consists of a series of sensitivity and algorithm (bio-optical, atmospheric correction and quality control) studies based on Coastal Zone Color Scanner (CZCS) and historical ancillary data undertaken to assist in the development of SeaWiFS specific applications needed for the proper execution of that responsibility. The topics presented are as follows: 1) CZCS bio-optical algorithm comparison, 2) SeaWiFS ozone data analysis study, 3) SeaWiFS pressure and oxygen absorption study, 4) pixel-by-pixel pressure and ozone correction study for ocean color imagery, 5) CZCS overlapping scenes study, 6) a comparison of CZCS and {\it in situ\/} pigment concentrations in the Southern Ocean, 7) the generation of ancillary data climatologies, 8) CZCS sensor ringing mask comparison, and 9) sun glint flag sensitivity study.
