Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 2, pp. 186-195
Verification of VGPM and K&I models of primary production in the northwestern part of the Japan Sea using shipboard and satellite data
Yu.V. Shambarova
1 , I.E. Stepochkin
1 , S.P. Zakharkov
1 1 V.I. Il`ichev Pacific Oceanological Institute FEB RAS, Vladivostok, Russia
Accepted: 18.03.2019
DOI: 10.21046/2070-7401-2019-16-2-186-195
Presented study examines the possibility of use of the VGPM and K&I models of net primary production (PP) in the coastal water areas of the North-Western Japan Sea. Field measurements of PP and other bio-optical parameters of water were taken. In situ data include concentrations of chlorophyll a (CHL) and NPP, obtained with a reference methods, as well as sea surface temperature (SST), photosynthetically active radiation (PAR) at the surface and euphotic depth (Zeu), obtained with a submersible profiler. Also data of remote sensing reflectance spectra (RRS), obtained with a portable spectroradiometer ASD FieldSpec HandHeld throughout the ship’s route was used. Comparison with a data of ocean color satellite scanner MODIS-Aqua (CHL, PAR, SST, NPP, Zeu; Level-3, 4-km regular grid) was held. Shortcomings of VGPM and K&I models were shown and some approaches for elaboration of regional model of NPP were offered. It’s necessary to consider the water area’s regional specialties and features of Case-2 waters, photosynthetic patterns of phytoplankton and estimation errors of satellite scanners in particular.
Keywords: net primary production, phytoplankton, ocean remote sensing, VGPM, chlorophyll a
Full textReferences:
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