The Pacific shallow oxygen maximum, deep chlorophyll maximum, and primary productivity, reconsidered

摘要: Abstract In the open mid-latitude Pacific in summer, a subsurface oxygen maximum with saturation ratios reaching 120% or more is found below of primary productivity and above deep chlorophyll maximum. This feature appears to arise from photosynthetic production oxygen, which prevented escaping atmosphere by density cap created surface warming during summer. high low latitudes, areas where most photosynthesis takes place nearer weaker, this accumulation may not be so effective degree less, even though greater. The excess (above saturation) can used estimate minimal rates at those depths. Productivity estimated much greater than measured 14 C method. suggests that method substantially underestimates true only these regions but generally.