Nutrient Climatology

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The nutrient data mining effort was led by D. Townsend (UMaine) with assistance of his research associate, Maura A. Thomas and graduate student, Nathan.D. Rebuck.  After a careful calibration, those nutrient data were compiled into a database. A significant progress has been made in compiling a nutrient database for use in driving the models.  To date, our database includes more than 100,000 samples. The majority of data comes from two public sources: the World Ocean Database maintained at the National Oceanographic Data Center, and data assembled at the Marine Environmental Science Division at the Bedford Institute of Oceanography and the Marine Environmental Data Service in Ottawa, both a part of the Department of Fisheries and Oceans Canada. The two public sources were supplemented with additional data that have remained in provisional or unreleased status. Much of the new and unreleased data come from samples collected and processed by the Townsend Lab at the University of Maine (DWT).  In addition, observations were provided by the Atlantic Zone Monitoring Program (AZMP), the University of New Hampshire Coastal Ocean Observing Center (UNHCOOA), data collected on Alexandrium and other survey cruises by D. McGillicuddy at the Woods Hole Oceanographic Institute (WHOI), the Massachusetts Water Resource Authority (MWRA), and the Marine Monitoring and Assessment Program at the Northeast Fisheries Science Center of NOAA (MARMAP).

Additional details including a description of methods used in QA/QC efforts are given in Rebuck et al. (2009) at: http://grampus.umeoce.maine.edu/nutrients/. This work has resulted in a publication, with an historical analysis of changes in the nutrient field in the Gulf of Maine since the 1960s (Townsend et al., 2010).



 

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Last updated September 14, 2010
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