Seasonal measurements of POC,CDOM, and DOC from the Mid-Atlantic Bight, George's Bank, and the Gulf Of Maine: Modeling Carbon distributions from discrete data and their relationship to flow through measurements of Beam attenuation and CDOM fluorescence

Michael G Novak, NASA/SSAI GSFC, michael.novak@nasa.gov (Presenter)
Antonio Mannino, NASA GSFC, antonio.mannino@nasa.gov

In order to refine Ocean Color measurements in the coastal region, extensive spatial and seasonal in situ data are required. However, it is expensive and time consuming to collect and process a sufficient number of discrete samples from a given region during a research cruise. One way to extend the data set is to make underway measurements using a flow through seawater system. FDOM, Fl-Chl, and beam attenuation at 650nm were measured continuously in flow through as part of the field efforts for the project titled Impacts of Climate Variability on Primary Production and Carbon Distributions in the Mid-Atlantic Bight and Gulf of Maine (CliVEC). To help refine and quality control the data, every fifty minutes a valve automatically diverted the flow into a 0.2 micron capsule filter. These filtered moments provided baseline absorption measurements to account for fouling or instrumental background noise that was later subtracted from the attenuation measurements. Six research cruises were carried out on the R/V Delaware Two since Aug of 2008. Seasonal and spatial relationships identified between: POC and beam attenuation, FDOM and CDOM, and CDOM and DOC were used to model POC, CDOM, and DOC throughout the study region.

Presentation Type:  Poster

Session:  Coupled Processes at Land-Atmosphere-Ocean Interfaces   (Mon 4:00 PM)

Associated Project(s): 

• Mannino, Antonio: The Impacts of Climate Variability on Primary Productivity and Carbon Distributions in the Middle Atlantic Bight and Gulf of Maine ...details

Poster Location ID: 61