Welcome to the NPP Products path. Here you can access ocean net primary
production (NPP) data for alternative NPP algorithms and using either SeaWiFS, MODIS
or VIIRS data. You will also find visual comparisons of NPP algorithm products at
different temporal scales (e.g., annual, monthly), brief descriptions of each algorithm,
and code for your own algorithm implementation. To navigate the NPP Products
page, begin by selecting one of the top-level tabs located above (i.e., Online Data, Visual
Comparision, Model Description, Code).
To proceed directly to online data, simply click on one of the NPP images
below. The first image will provide access to the standard VGPM algorithm products, the
second gives NPP estimates from the Eppley-VGPM, the third gives access to NPP data
from the updated
(spectrally-resolved and depth-resolved) Carbon-based Production Model-2 (CbPM2), and the
fourth from the absorption based CAFE Model. The CAFE Model is also spectrally-resolved,
as well as being both depth- and time-resolved.
Please note that the standard VGPM had been referred to here as the "Standard" product, and the
other models were refered to as "Custom" products. All models are now regularly produced as input data become available.
The VIIRS-based CAFE model is expected to be brought online with the next VIIRS reprocessing.
Online products are provided at 8day and monthly time periods, and cover both (1080 x 2160) and (2160 x 4320) global grids in hdf format.
VIIRS based estimates, from 2012 to present (April, 2016 shown below)