Ocean Productivity (NPP)


This product is developed at the Oregon State University, its home page is here:

It provides monthly or weekly Net Primary Production global maps with a resolution of 1/6degree or 1/12 (!) from 1997-2007 (using SeaWIFS chlorophyll) and 2002-2007 (using MODIS chlorophyll).
It is based on a misc of datas (chlorophyll, SST, radiative forcing) and a model (Vertically Generalized Production Model, VGPM, Behrenfeld & Falkowski 1997a). It's all well explained on their website.

After downloading the monthly Standard SeaWIFS based estimate (here: http://orca.science.oregonstate.edu/1080.by.2160.monthly.hdf.vgpm.s.chl.a.sst.php) in hdf format, I converted it in netcdf using the matlab function hdf2netcdf.m you'll find at the bottom of this page and then blended the whole monthly time serie into a single netcdf file using another matlab script (again attached to this page). The single netcdf file is 1.1 Go size.

Download:
Reference:
Photosynthetic Rates Derived from Satellite-Based Chlorophyll Concentration
Michael J. Behrenfeld, Paul G. Falkowski
Limnology and Oceanography, Vol. 42, No. 1 (Jan., 1997), pp. 1-20: http://www.jstor.org/stable/2838857


Mean NPP 1998-2007
Mean NPP 1998-2007, zoom North Atlantic
Annual NPP anomaly (green) integrated over the Irminger Sea versus NAO winter index (blue)
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create_single_monthly_ncfile.m
(5k)
G. Maze (admin),
Feb 16, 2010, 4:51 AM
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hdf2netcdf.m
(6k)
G. Maze (admin),
Feb 16, 2010, 4:51 AM
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