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Ecosystems Dynamics & Assessment> | Current Conditions (Fall 2017)

Spring Chlorophyll Distribution

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The progression of spring chlorophyll concentrations for the months of January through June are shown in the interactive figure. Chlorophyll concentrations appear as progressive shades of green in the left hand icons. Anomalies of chlorophyll concentration, those tending to exceed plus or minus one quarter of a standard deviation of the overall concentration for the field, are in the right hand set of icons. Chlorophyll concentrations were below average over much of Georges Bank and in the western Gulf of Maine during March into April, the period of time usually associated with the spring bloom in those areas. The eastern Gulf of Maine appear to have bloomed in April and the only obvious bloom activity on Georges Bank did not occur until May, suggest a reduced and delayed bloom.
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(File Modified Dec. 11 2017)