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Remote Sens. 2016, 8(1), 25; doi:10.3390/rs8010025

Long-Term Pattern of Primary Productivity in the East/Japan Sea Based on Ocean Color Data Derived from MODIS-Aqua

1
Department of Oceanography, Pusan National University, Geumjeong-gu, Busan 46241, Korea
2
CIRA, Colorado State University, Fort Collins, CO 80523, USA
3
Korea Institute of Ocean Science and Technology, Ansan 15627, Korea
4
Department of Marine Bioscience, GangneungWonju National University, Kangwon 25457, Korea
5
School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Deepak R. Mishra, Eurico J. D’Sa, Sachidananda Mishra, Xiaofeng Li and Prasad S. Thenkabail
Received: 26 August 2015 / Revised: 21 December 2015 / Accepted: 25 December 2015 / Published: 31 December 2015
(This article belongs to the Special Issue Remote Sensing of Water Resources)
View Full-Text   |   Download PDF [5582 KB, uploaded 31 December 2015]   |  

Abstract

The East/Japan Sea (hereafter, the East Sea) is highly dynamic in its physical phenomena and biological characteristics, but it has changed substantially over the last several decades. In this study, a recent decadal trend of primary productivity in the East Sea was analyzed based on Moderate-Resolution Imaging Spectroradiometer (MODIS)-derived monthly values to detect any long-term change. The daily primary productivities averaged using monthly values from 2003 to 2012 were 719.7 mg·C·m−2·d−1 (S.D. ± 197.5 mg·C·m−2·d−1, n = 120) and 632.3 mg·C·m−2·d−1 (S.D. ± 235.1 mg·C·m−2·d−1, n = 120) for the southern and northern regions of the East Sea, respectively. Based on the daily productivities, the average annual primary production in the East Sea was 246.8 g·C·m−2·y−1, which was substantially higher than that previously reported in deep oceans. However, a decreasing trend (13% per 10 years) in the annual primary production was observed in the East Sea within the study period from 2003 to 2012. The shallower mixed layers caused by increased temperature could be a potential cause for the decline in annual production. However, this decline could also be part of an oscillation pattern that is strongly governed by the Pacific Decadal Oscillation (PDO). A better understanding of primary productivity patterns and their subsequent effects on the marine ecosystem is required for further interdisciplinary studies in the East Sea. View Full-Text
Keywords: east sea; MODIS; primary productivity; PDO east sea; MODIS; primary productivity; PDO
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Joo, H.; Son, S.; Park, J.-W.; Kang, J.J.; Jeong, J.-Y.; Lee, C.I.; Kang, C.-K.; Lee, S.H. Long-Term Pattern of Primary Productivity in the East/Japan Sea Based on Ocean Color Data Derived from MODIS-Aqua. Remote Sens. 2016, 8, 25.

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