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Western Gulf of Maine Red Tide Project Data

Project Data Products

Moored Measurements See the basemap for locations. Mooring sites M, P_2 and B were occupied in 1993, and sites K, P_1, P_2, B and S were occupied in 1994. The moored data is available in (1) NetCDF format or or (2) ASCII format or interactive viewing via the PMEL EPIC system

Shipboard Measurements:

Available in Matlab format.

3-day survey cruises on the R/V Argo Maine mid-April, May and June in both 1994 and 1994 10, 30 km offshore transects (5-8 stations/each) between Penobscot Bay and Cape Ann 3 - 4 shorter cruises on smaller vessels CTD profiles discrete samples for Alexandrium counts, nutrients.

Drifter Trajectories: 7 surface drifters deployed near mouth of Kennebec (ARGOS satellite-tracked drifters, drogued at 5 m with temperature and conductivity sensors)

Modeling: 3-dimensional, finite difference circulation model (ECOM-3D, Blumberg and Mellor) limited-domain model between Penobscot Bay and Cape Cod, extending 50 km offshore. Forced by wind stress, river discharge, and regional circulation (from Dartmouth model), simulates transport, water properties and Alexandrium cell concentrations.

Auxiliary Data

Much of the following data is stored in NetCDF format. To download the data, select "load to local disk" before following the link to the data file. This will keep your Web browser from trying to figure out what to do with a netCDF file. (shift+click in Netscape or MS Explorer)

If you use MATLAB, you can use MexCDF, the netCDF/Matlab interface to access data directly from these netCDF files. You might also want to see some the Matlab tools for oceanographic data .

Wind Data

River Runoff Data

River discharge was obtained from the USGS regional district offices.

Plot of 1993 Runoff in Western Gulf of Maine

Plot of 1994 Runoff in  Western Gulf of Maine

The runoff data here has not been corrected for drainage area downstream of the gauging station. If you wish to make the correction, I have calculated factors to multiply the observed discharges ((downstream area + upstream area) / upstream area) : Merrimack= 1.08, Charles=1.27, Saco=1.31, Kennebec+Androscoggin=1.15, Penobscot=1.10.

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