Spring 2011 Update: Fall Chlorophyll Distribution
The progression of fall chlorophyll a concentrations during the months of July through December are shown in the left hand set of panels. Higher chlorophyll a concentrations appear as warm shades whereas low concentrations appear as cool shades. The right hand set of panels show exceptional anomalies of chlorophyll concentration, those tending to exceed plus or minus one quarter of a standard deviation of the overall concentration for the field. The anomalies highlight strong blooms in an area (i.e., the green shades) as well as significantly below-average concentrations (i.e., the brown shades). Chlorophyll concentrations were at or below average levels over most of the shelf during summer, with the exception of an August bloom off the New Jersey coast. Fall chlorophyll conditions were generally below average with the exception of some November measurements associated with some parts of Georges Bank and along the Delmarva Peninsula.