The progression of spring chlorophyll concentrations for the months of January through June are shown in the interactive figure below. 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. This type of anomaly tends to highlight strong blooms in an area, the green shades, and weak blooms in an area, the brown shades. Winter bloom development can be seen along the Middle Atlantic Bight in January and February followed by a massive bloom including most areas of the shelf by March. Central portions of Georges Bank appear to have had below average spring bloom activity.

Place cursor over icon below to display detailed figure to the right