The South China Sea, Java Sea, Andaman Sea and the Indian Ocean are virtually absent of quantities of any blooms of chlorophyll in April 2018, which absorbs CO2.
Where the Indian ocean meets the West Wind Drift (the outer circulation - furthest from the coast) of Antarctica there is diminished chlorophyll. All of this is of concern because it matches the loss of coral reefs, including the Great Barrier Reef. The same West Wind Drift where it moves between South America and Africa is effectively diminished, but, less so. There may be a reason for this in that icebergs carry microscopic plant life with them. Larsen C's Ice Shelf collapse (click here) produced sizable glaciers that would still be floating in that circulation.
The Equatorial regions of Earth west of Ecuador the chlorophyll is mostly absent. That occurred because the Intertropical Convergence Zone (ITCZ) has become completely disrupted most of the year with water vapor moved north by large mid-latitude vortices.
The northern hemisphere shows signs of the chlorophyll production of Earth moving northward with warming oceans. It is most notable between North America and Greenland. The Greenland melt would also send nutrients into the Atlantic Ocean. Of note is diminished production west of North American into the Pacific. That makes sense, with the Pacific warming the production of chlorophyll (algae and phytoplankton) occurs within the first 30 feet of the upper ocean do to sunlight penetration. We know the Pacific Ocean is warming so that would have an effect on chlorophyll production.
Europe is experiencing less chlorophyll density, but, not as traumatic as other areas of Earth already described. Inland bodies of water in Europe are appear to be unchanged, because, the algae is probably blue-green algae which has manifested from the beginning of time.
The most alarming reality is the impressive loss of chlorophyll at the "Tropic of Cancer" northward to approximately 45 degrees north latitude. That is a very big deal. That is also a global reality that should not be taken lightly. The only place this is not the case is the Yellow Sea, east of China. There is a lot of loss to worry about. The chlorophyll of Earth produces 60 percent of breathable oxygen. There is a lot to worry about when coral reefs die and the chlorophyll assessments are proving diminished capacity of Earth's oceans to produce
Chlorophyll and Sea Surface Temperatures (click here)
"Save the Plankton, Breathe Freely" (click here)
"Save the Plankton, Breathe Freely" Experiment in PDF (click here)
