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Online Data: Eppley VGPM

1080 by 2160 Monthly HDF files from MODIS 1.1 Data

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.

different grid size or timestep?

[Note: ancillary input data are available here for those who are interested]

Data Selection

You can either download annual tar files with the data we have for each year, or you can access individual monthly files at the end of this page.

Annual Tar Files

eppley.2002.tar • 2002 data; ~ 25 MB of compressed data
eppley.2003.tar • 2003 data; ~ 50 MB of compressed data
eppley.2004.tar • 2004 data; ~ 50 MB of compressed data
eppley.2005.tar • 2005 data; ~ 50 MB of compressed data
eppley.2006.tar • 2006 data; ~ 50 MB of compressed data
eppley.2007.tar • 2007 data; ~ 50 MB of compressed data
no 2008 files • 2008 data: no complete months

hdf file naming convention

eppley.yyyyddd.hdf.gz

eppley = net primary production (units of mg C / m**2 / day) based on the eppley variation of the vgpm algorithm
yyyy = year
ddd= day of year of the start of each monthly 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 eppley variation of the vgpm, using modis chl, modis sst4, and seawifs par as input; clouds have been filled in the input data using our own gap-filling software.

For citation, please reference the original vgpm paper by Behrenfeld and Falkowski, 1997a as well as the Ocean Productivity site for the data.

Monthly Files

  2002 2003 2004 2005
  January no data eppley.2003001 eppley.2004001 eppley.2005001
  February no data eppley.2003032 eppley.2004032 eppley.2005032
  March no data eppley.2003060 eppley.2004061 eppley.2005060
  April no data eppley.2003091 eppley.2004092 eppley.2005091
  May no data eppley.2003121 eppley.2004122 eppley.2005121
  June no data eppley.2003152 eppley.2004153 eppley.2005152
  July eppley.2002182 eppley.2003182 eppley.2004183 eppley.2005182
  August eppley.2002213 eppley.2003213 eppley.2004214 eppley.2005213
  September eppley.2002244 eppley.2003244 eppley.2004245 eppley.2005244
  October eppley.2002274 eppley.2003274 eppley.2004275 eppley.2005274
  November eppley.2002305 eppley.2003305 eppley.2004306 eppley.2005305
  December eppley.2002335 eppley.2003335 eppley.2004336 eppley.2005335

  2006 2007 2008
  January eppley.2006001 eppley.2007001 missing par
  February eppley.2006032 eppley.2007032 missing par
  March eppley.2006060 eppley.2007060 missing par
  April eppley.2006091 eppley.2007091 partial par
  May eppley.2006121 eppley.2007121 partial par
  June eppley.2006152 eppley.2007152 partial par
  July eppley.2006182 eppley.2007182 missing par
  August eppley.2006213 eppley.2007213 missing par
  September eppley.2006244 eppley.2007244 missing par
  October eppley.2006274 eppley.2007274 missing par
  November eppley.2006305 eppley.2007305 not ready
  December eppley.2006335 eppley.2007335 not ready


Last modified: 12 October 2009
by:  Robert O'Malley
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