Home Standard Products Custom Products Frequently Asked Questions
Field Data Site Map Land / Ocean Merge Highlights / Results


Online Data: Standard VGPM

2160 by 4320 8day HDF files from MODIS R2010.0 Data

PLEASE NOTE (02.27.2012)
The quality of the MODIS data has degraded significantly over the past year.
Expect either a partial reprocessing (2010-present)
or a full-mission reprocessing to correct this.
Until then, use the data for 2011 with caution.

note: all data updated 8.05.2011 using the new MODIS.R2010.0 (partial) reprocessing results
data files starting with 2008305 are all new ... data before that are unchanged

note: SST4 input data from 2010017 onward were reissued on Jan 21, 2011
2010 files were updated on this web page Jan 28, 2011
note: all data updated 5.24.2010 using the new MODIS.R2009.1 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.

different grid size, timestep, or format?

[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 the individual 8day files at the end of this page.

Annual Tar Files

vgpm.m.2002.tar• 2002 data: ~ 340 MB of compressed data
vgpm.m.2003.tar• 2003 data: ~ 706 MB of compressed data
vgpm.m.2004.tar• 2004 data: ~ 706 MB of compressed data
vgpm.m.2005.tar• 2005 data: ~ 709 MB of compressed data
vgpm.m.2006.tar• 2006 data: ~ 708 MB of compressed data
vgpm.m.2007.tar• 2007 data: ~ 708 MB of compressed data
vgpm.m.2008.tar• 2008 data: ~ 707 MB of compressed data
vgpm.m.2009.tar• 2009 data: ~ 706 MB of compressed data
vgpm.m.2010.tar• 2010 data: ~ 707 MB of compressed data
vgpm.m.2011.tar• 2011 data: ~ 443 MB of compressed data

hdf file naming convention

vgpm.yyyyddd.hdf.gz

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.

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

8day Files

starting day2002200320042005200620072008200920102011
001----- 2003001 2004001 2005001 2006001 2007001 2008001 2009001 2010001 2011001
009----- 2003009 2004009 2005009 2006009 2007009 2008009 2009009 2010009 2011009
017----- 2003017 2004017 2005017 2006017 2007017 2008017 2009017 2010017 2011017
025----- 2003025 2004025 2005025 2006025 2007025 2008025 2009025 2010025 2011025
033----- 2003033 2004033 2005033 2006033 2007033 2008033 2009033 2010033 2011033
041----- 2003041 2004041 2005041 2006041 2007041 2008041 2009041 2010041 2011041
049----- 2003049 2004049 2005049 2006049 2007049 2008049 2009049 2010049 2011049
057----- 2003057 2004057 2005057 2006057 2007057 2008057 2009057 2010057 2011057
065----- 2003065 2004065 2005065 2006065 2007065 2008065 2009065 2010065 2011065
073----- 2003073 2004073 2005073 2006073 2007073 2008073 2009073 2010073 2011073
081----- 2003081 2004081 2005081 2006081 2007081 2008081 2009081 2010081 2011081
089----- 2003089 2004089 2005089 2006089 2007089 2008089 2009089 2010089 2011089
097----- 2003097 2004097 2005097 2006097 2007097 2008097 2009097 2010097 2011097
105----- 2003105 2004105 2005105 2006105 2007105 2008105 2009105 2010105 2011105
113----- 2003113 2004113 2005113 2006113 2007113 2008113 2009113 2010113 2011113
121----- 2003121 2004121 2005121 2006121 2007121 2008121 2009121 2010121 2011121
129----- 2003129 2004129 2005129 2006129 2007129 2008129 2009129 2010129 2011129
137----- 2003137 2004137 2005137 2006137 2007137 2008137 2009137 2010137 2011137
145----- 2003145 2004145 2005145 2006145 2007145 2008145 2009145 2010145 2011145
153----- 2003153 2004153 2005153 2006153 2007153 2008153 2009153 2010153 2011153
161----- 2003161 2004161 2005161 2006161 2007161 2008161 2009161 2010161 2011161
169----- 2003169 2004169 2005169 2006169 2007169 2008169 2009169 2010169 2011169
177----- 2003177 2004177 2005177 2006177 2007177 2008177 2009177 2010177 2011177
185 2002185 2003185 2004185 2005185 2006185 2007185 2008185 2009185 2010185 2011185
193 2002193 2003193 2004193 2005193 2006193 2007193 2008193 2009193 2010193 2011193
201 2002201 2003201 2004201 2005201 2006201 2007201 2008201 2009201 2010201 2011201
209----- 2003209 2004209 2005209 2006209 2007209 2008209 2009209 2010209 2011209
217 2002217 2003217 2004217 2005217 2006217 2007217 2008217 2009217 2010217 2011217
225 2002225 2003225 2004225 2005225 2006225 2007225 2008225 2009225 2010225 2011225
233 2002233 2003233 2004233 2005233 2006233 2007233 2008233 2009233 2010233-----
241 2002241 2003241 2004241 2005241 2006241 2007241 2008241 2009241 2010241-----
249 2002249 2003249 2004249 2005249 2006249 2007249 2008249 2009249 2010249-----
257 2002257 2003257 2004257 2005257 2006257 2007257 2008257 2009257 2010257-----
265 2002265 2003265 2004265 2005265 2006265 2007265 2008265 2009265 2010265-----
273 2002273 2003273 2004273 2005273 2006273 2007273 2008273 2009273 2010273-----
281 2002281 2003281 2004281 2005281 2006281 2007281 2008281 2009281 2010281-----
289 2002289 2003289 2004289 2005289 2006289 2007289 2008289 2009289 2010289-----
297 2002297 2003297 2004297 2005297 2006297 2007297 2008297 2009297 2010297-----
305 2002305 2003305 2004305 2005305 2006305 2007305 2008305 2009305 2010305-----
313 2002313 2003313 2004313 2005313 2006313 2007313 2008313 2009313 2010313-----
321 2002321 2003321 2004321 2005321 2006321 2007321 2008321 2009321 2010321-----
329 2002329 2003329 2004329 2005329 2006329 2007329 2008329 2009329 2010329-----
337 2002337 2003337 2004337 2005337 2006337 2007337 2008337 2009337 2010337-----
345 2002345 2003345 2004345 2005345 2006345 2007345 2008345 2009345 2010345-----
353 2002353 2003353 2004353 2005353 2006353 2007353 2008353 2009353 2010353-----
361 2002361 2003361 2004361 2005361 2006361 2007361 2008361 2009361 2010361-----


Last modified: 27 February 2012
by:  Robert O'Malley

HomeStandard ProductsCustom ProductsFAQ sheet

Field DataSite Map Land / Ocean Merge Highlights / Results