| Description: |
A satellite-based study was conducted to document daily changes in net primary production (NPP) by phytoplankton in the Arctic Ocean from 1998 to 2009 using fields of sea ice extent, sea surface temperature, and chlorophyll a concentrations. Total annual NPP over the Arctic Ocean exhibited a statistically significant 20% increase between 1998 and 2009, due mainly to secular increases in both the extent of open water (+27%) and the duration of the open water season (+45 days). [Source: Journal of Geophysical Research-Oceans]
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