Ww. Gregg et al., Initial analysis of ocean color data from the ocean color and temperature scanner. II. Geometric and radiometric analysis, APPL OPTICS, 38(27), 1999, pp. 5692-5702
We assessed the geometric and radiometric performance of the ocean color an
d temperature scanner (OCTS) using data acquired over the United States. In
itial results indicated a geometric offset in the along-track direction of
4-5 pixels that was attributed to a tilt bias. OCTS radiometric data appear
ed to suffer from near-held and possibly far-field scatter effects. Analysi
s of radiometric stability was inconclusive because of daily variability an
d the absence of a full seasonal cycle. Comparison of OCTS-computed water-l
eaving radiances with colocated in situ measurements showed that the prelau
nch. calibration required adjustment from -2% to + 13%. Minor modification
of OCTS data processing based on these results and avoidance of near-field
scatter effects can enable improved and more-reliable OCTS data for quantit
ative scientific analyses. (C) 1999 Optical Society of America. OCIS codes:
010.4450, 280.0280, 110.2960, 110.3000.