MAIN REASONS OF ERRORS IN SATELLITE DERIVED PRIMARY PRODUCTION MODELS:
CASE STUDY OF THE WESTERN PART OF THE JAPAN/EAST SEA
Abstract
Application of satellite derived models of primary production using
ocean colour remote sensing data opens new possibilities of estimation
of its time and spatial variability at different scales. However, it is
always necessary to take into account that errors of model retrieval can
affect wrong interpretation of this variability. In the study we
analyzed errors of satellite derived primary production models and
explain main reasons of its appearance for a case study of the western
part of the Japan/East Sea (35-44 N, 130-137 E). As satellite derived
primary production we used data of Vertical Generalized Production Model
(VGPM) from Ocean Productivity database. Due to insufficient amount of
in situ primary production data in the western part of the Japan/East
Sea, satellite derived primary production was compared with modeled
assessments, which were got using ship data of model input parameters
(chlorophyll-a at different depths, assimilation number, euphotic depth
etс). Applied analysis showed three reasons of errors of satellite
derived primary production models: (1) accuracy of remote sensing
chlorophyll-a, (2) oceanographic conditions - water stratification and
(3) accuracy of assimilation number determination.