Impacts of Physical and Biological Processes on Spatial and Temporal Variability of Particulate Organic Carbon in the North Pacific Ocean during 2003-2017.

Discussion Spatial variability An earlier study showed large spatial variability in primary production in the North Pacific 32 , i.e., an overall increase from the south to the north and an increasing trend from the east to the west, similar to the spatial pattern of POC (Fig. 2 ).

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Studies have also shown a decreasing trend in chlorophyll and net community production from 1971 to 2000 in the surface waters of the Northwest Pacific 11 , 12 .

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