Estimation of Primary Production in the Northwestern Part of the Sea of Japan by Ship- and Satellite-Based Observations

V. I. Zvalinsky, P. V. Lobanova, P. Ya. Tishchenko, V. B. Lobanov

Research output

Abstract

The study analyzes data of ship-based observations on 45 stations performed aboard the R/VAkademik M.A. Lavrentyev on cruise 33 May 7-18, 2004, in the northwestern part of the Sea of Japan (35-44 degrees N, 130-137 degrees E). The following in situ data were used: CTD-data, assimilation number, concentrations of nutrients (nitrogen, phosphorus, and silicon compounds) and chlorophyll a (Chl a). Satellite data on Chl a concentration, diffuse attenuation coefficient at a wavelength of 490 nm, primary production (PP), and Photosynthetically Active Radiation (PAR) available from the Climate Change Initiative Ocean Colour (CCI-OC) and Ocean Productivity databases were also used for the same stations. The Chl a concentration in the first optical layer estimated from the results of ship-based measurements, was on average 0.55 +/- 0.58 mg/m(3), but the satellite-derived estimates were almost twice as high (0.95 +/- 0.36 mg/m(3)). Ship assessments of PP were 1870 +/- 900 mgC m(-2) day(-1); the value obtained using satellite data was 1.5 times smaller: 1226 +/- 432 mgC m(-2) day(-1). Vertical Chl a profiles showed that the largest amount of Chl a was concentrated in the 20-45 m layer. Measurements of the assimilation number showed that most production occurs within the 0-55 m layer in the south of the study area and within the 0-30 m layer in the north. The weak correlation between ship- and satellite-derived Chl a and PP values can be explained by low accuracy of satellite-derived estimates.

Original languageEnglish
Pages (from-to)37-48
Number of pages12
JournalOceanology
Volume59
Issue number1
DOIs
Publication statusPublished - Jan 2019

Cite this

Zvalinsky, V. I. ; Lobanova, P. V. ; Tishchenko, P. Ya. ; Lobanov, V. B. / Estimation of Primary Production in the Northwestern Part of the Sea of Japan by Ship- and Satellite-Based Observations. In: Oceanology. 2019 ; Vol. 59, No. 1. pp. 37-48.
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Estimation of Primary Production in the Northwestern Part of the Sea of Japan by Ship- and Satellite-Based Observations. / Zvalinsky, V. I.; Lobanova, P. V.; Tishchenko, P. Ya.; Lobanov, V. B.

In: Oceanology, Vol. 59, No. 1, 01.2019, p. 37-48.

Research output

TY - JOUR

T1 - Estimation of Primary Production in the Northwestern Part of the Sea of Japan by Ship- and Satellite-Based Observations

AU - Zvalinsky, V. I.

AU - Lobanova, P. V.

AU - Tishchenko, P. Ya.

AU - Lobanov, V. B.

PY - 2019/1

Y1 - 2019/1

N2 - The study analyzes data of ship-based observations on 45 stations performed aboard the R/VAkademik M.A. Lavrentyev on cruise 33 May 7-18, 2004, in the northwestern part of the Sea of Japan (35-44 degrees N, 130-137 degrees E). The following in situ data were used: CTD-data, assimilation number, concentrations of nutrients (nitrogen, phosphorus, and silicon compounds) and chlorophyll a (Chl a). Satellite data on Chl a concentration, diffuse attenuation coefficient at a wavelength of 490 nm, primary production (PP), and Photosynthetically Active Radiation (PAR) available from the Climate Change Initiative Ocean Colour (CCI-OC) and Ocean Productivity databases were also used for the same stations. The Chl a concentration in the first optical layer estimated from the results of ship-based measurements, was on average 0.55 +/- 0.58 mg/m(3), but the satellite-derived estimates were almost twice as high (0.95 +/- 0.36 mg/m(3)). Ship assessments of PP were 1870 +/- 900 mgC m(-2) day(-1); the value obtained using satellite data was 1.5 times smaller: 1226 +/- 432 mgC m(-2) day(-1). Vertical Chl a profiles showed that the largest amount of Chl a was concentrated in the 20-45 m layer. Measurements of the assimilation number showed that most production occurs within the 0-55 m layer in the south of the study area and within the 0-30 m layer in the north. The weak correlation between ship- and satellite-derived Chl a and PP values can be explained by low accuracy of satellite-derived estimates.

AB - The study analyzes data of ship-based observations on 45 stations performed aboard the R/VAkademik M.A. Lavrentyev on cruise 33 May 7-18, 2004, in the northwestern part of the Sea of Japan (35-44 degrees N, 130-137 degrees E). The following in situ data were used: CTD-data, assimilation number, concentrations of nutrients (nitrogen, phosphorus, and silicon compounds) and chlorophyll a (Chl a). Satellite data on Chl a concentration, diffuse attenuation coefficient at a wavelength of 490 nm, primary production (PP), and Photosynthetically Active Radiation (PAR) available from the Climate Change Initiative Ocean Colour (CCI-OC) and Ocean Productivity databases were also used for the same stations. The Chl a concentration in the first optical layer estimated from the results of ship-based measurements, was on average 0.55 +/- 0.58 mg/m(3), but the satellite-derived estimates were almost twice as high (0.95 +/- 0.36 mg/m(3)). Ship assessments of PP were 1870 +/- 900 mgC m(-2) day(-1); the value obtained using satellite data was 1.5 times smaller: 1226 +/- 432 mgC m(-2) day(-1). Vertical Chl a profiles showed that the largest amount of Chl a was concentrated in the 20-45 m layer. Measurements of the assimilation number showed that most production occurs within the 0-55 m layer in the south of the study area and within the 0-30 m layer in the north. The weak correlation between ship- and satellite-derived Chl a and PP values can be explained by low accuracy of satellite-derived estimates.

KW - CHLOROPHYLL

KW - PHOTOSYNTHESIS

KW - VARIABILITY

U2 - 10.1134/S0001437019010223

DO - 10.1134/S0001437019010223

M3 - статья

VL - 59

SP - 37

EP - 48

JO - Oceanology

JF - Oceanology

SN - 0001-4370

IS - 1

ER -