The Ocean Productivity Site has stopped updating its data.
We hope to continue operations shortly.
(09.12.2024)
Online Data: Standard VGPM
2160 by 4320 8day HDF files from VIIRS R2022 Data
note: data updated 10.17.2023 using the new VIIRS.R2022 reprocessing results
note: data updated 06.22.2018 using the new VIIRS.R2018 reprocessing results
To get these data,
please click on the file name(s) that you have selected
and save locally on your computer.
The individual hdf files are gzipped
(use gunzip to uncompress)
and the tar files contain gzipped hdf files.
vgpm = net primary production (units of mg C / m**2 / day) based on the standard vgpm algorithm
yyyy = year
ddd= day of year of the start of each 8day file
hdf = file type
gz = compressed with gzip (uncompress with gunzip)
The hdf files have metadata contained within them, which can be examined, for example, with program "ncdump".
npp is based on the standard vgpm, using modis chl, sst4, and par as input;
clouds have been filled in the input data using our own gap-filling software.