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Please note:

The Ocean Productivity Site has stopped updating its data.
We hope to continue operations shortly.

(09.12.2024)


Online Data: Eppley VGPM

1080 by 2160 8day HDF files from SeaWiFS r2014 Data

note: all data updated 04.07.2016 using the new SeaWiFS.r2014 reprocessing results

note: all data updated 12.23.2010 using the new SeaWiFS.r2010 reprocessing results
note: all data updated 4.05.2010 using the new SeaWiFS.r2009.1 reprocessing results

note: all data updated 3.10.2009 reflect usage of q5 to q8 avhrr sst input data; please replace previous downloads with these values

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

Annual Tar Files

eppley.s.1997.tar• 1997 data: ~   54 MB of compressed data
eppley.s.1998.tar• 1998 data: ~ 177 MB of compressed data
eppley.s.1999.tar• 1999 data: ~ 177 MB of compressed data
eppley.s.2000.tar• 2000 data: ~ 177 MB of compressed data
eppley.s.2001.tar• 2001 data: ~ 177 MB of compressed data
eppley.s.2002.tar• 2002 data: ~ 177 MB of compressed data
eppley.s.2003.tar• 2003 data: ~ 177 MB of compressed data
eppley.s.2004.tar• 2004 data: ~ 177 MB of compressed data
eppley.s.2005.tar• 2005 data: ~ 178 MB of compressed data
eppley.s.2006.tar• 2006 data: ~ 178 MB of compressed data
eppley.s.2007.tar• 2007 data: ~ 178 MB of compressed data
eppley.s.2008.tar• 2008 data: ~ 103 MB of compressed data
eppley.s.2009.tar• 2009 data: ~ 106 MB of compressed data

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 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 eppley variation of the vgpm, using seawifs chl, avhrr sst, 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.

8day Files

starting day1997199819992000200120022003200420052006200720082009
001----- 1998001 1999001 2000001 2001001 2002001 2003001 2004001 2005001 2006001 2007001----- 2009001
009----- 1998009 1999009 2000009 2001009 2002009 2003009 2004009 2005009 2006009 2007009----- 2009009
017----- 1998017 1999017 2000017 2001017 2002017 2003017 2004017 2005017 2006017 2007017----- 2009017
025----- 1998025 1999025 2000025 2001025 2002025 2003025 2004025 2005025 2006025 2007025----- 2009025
033----- 1998033 1999033 2000033 2001033 2002033 2003033 2004033 2005033 2006033 2007033----- 2009033
041----- 1998041 1999041 2000041 2001041 2002041 2003041 2004041 2005041 2006041 2007041----- 2009041
049----- 1998049 1999049 2000049 2001049 2002049 2003049 2004049 2005049 2006049 2007049----- 2009049
057----- 1998057 1999057 2000057 2001057 2002057 2003057 2004057 2005057 2006057 2007057----- 2009057
065----- 1998065 1999065 2000065 2001065 2002065 2003065 2004065 2005065 2006065 2007065----- 2009065
073----- 1998073 1999073 2000073 2001073 2002073 2003073 2004073 2005073 2006073 2007073----- 2009073
081----- 1998081 1999081 2000081 2001081 2002081 2003081 2004081 2005081 2006081 2007081----- 2009081
089----- 1998089 1999089 2000089 2001089 2002089 2003089 2004089 2005089 2006089 2007089----- 2009089
097----- 1998097 1999097 2000097 2001097 2002097 2003097 2004097 2005097 2006097 2007097 2008097 2009097
105----- 1998105 1999105 2000105 2001105 2002105 2003105 2004105 2005105 2006105 2007105 2008105 2009105
113----- 1998113 1999113 2000113 2001113 2002113 2003113 2004113 2005113 2006113 2007113 2008113-----
121----- 1998121 1999121 2000121 2001121 2002121 2003121 2004121 2005121 2006121 2007121 2008121-----
129----- 1998129 1999129 2000129 2001129 2002129 2003129 2004129 2005129 2006129 2007129 2008129-----
137----- 1998137 1999137 2000137 2001137 2002137 2003137 2004137 2005137 2006137 2007137 2008137-----
145----- 1998145 1999145 2000145 2001145 2002145 2003145 2004145 2005145 2006145 2007145 2008145-----
153----- 1998153 1999153 2000153 2001153 2002153 2003153 2004153 2005153 2006153 2007153 2008153-----
161----- 1998161 1999161 2000161 2001161 2002161 2003161 2004161 2005161 2006161 2007161 2008161-----
169----- 1998169 1999169 2000169 2001169 2002169 2003169 2004169 2005169 2006169 2007169 2008169 2009169
177----- 1998177 1999177 2000177 2001177 2002177 2003177 2004177 2005177 2006177 2007177----- 2009177
185----- 1998185 1999185 2000185 2001185 2002185 2003185 2004185 2005185 2006185 2007185----------
193----- 1998193 1999193 2000193 2001193 2002193 2003193 2004193 2005193 2006193 2007193----------
201----- 1998201 1999201 2000201 2001201 2002201 2003201 2004201 2005201 2006201 2007201----- 2009201
209----- 1998209 1999209 2000209 2001209 2002209 2003209 2004209 2005209 2006209 2007209----- 2009209
217----- 1998217 1999217 2000217 2001217 2002217 2003217 2004217 2005217 2006217 2007217----- 2009217
225----- 1998225 1999225 2000225 2001225 2002225 2003225 2004225 2005225 2006225 2007225----- 2009225
233----- 1998233 1999233 2000233 2001233 2002233 2003233 2004233 2005233 2006233 2007233 2008233 2009233
241----- 1998241 1999241 2000241 2001241 2002241 2003241 2004241 2005241 2006241 2007241 2008241-----
249----- 1998249 1999249 2000249 2001249 2002249 2003249 2004249 2005249 2006249 2007249 2008249-----
257 1997257 1998257 1999257 2000257 2001257 2002257 2003257 2004257 2005257 2006257 2007257 2008257-----
265 1997265 1998265 1999265 2000265 2001265 2002265 2003265 2004265 2005265 2006265 2007265 2008265-----
273 1997273 1998273 1999273 2000273 2001273 2002273 2003273 2004273 2005273 2006273 2007273 2008273-----
281 1997281 1998281 1999281 2000281 2001281 2002281 2003281 2004281 2005281 2006281 2007281 2008281-----
289 1997289 1998289 1999289 2000289 2001289 2002289 2003289 2004289 2005289 2006289 2007289 2008289-----
297 1997297 1998297 1999297 2000297 2001297 2002297 2003297 2004297 2005297 2006297 2007297 2008297-----
305 1997305 1998305 1999305 2000305 2001305 2002305 2003305 2004305 2005305 2006305 2007305 2008305-----
313 1997313 1998313 1999313 2000313 2001313 2002313 2003313 2004313 2005313 2006313 2007313 2008313 2009313
321 1997321 1998321 1999321 2000321 2001321 2002321 2003321 2004321 2005321 2006321 2007321 2008321 2009321
329 1997329 1998329 1999329 2000329 2001329 2002329 2003329 2004329 2005329 2006329 2007329 2008329-----
337 1997337 1998337 1999337 2000337 2001337 2002337 2003337 2004337 2005337 2006337 2007337 2008337 2009337
345 1997345 1998345 1999345 2000345 2001345 2002345 2003345 2004345 2005345 2006345 2007345 2008345 2009345
353 1997353 1998353 1999353 2000353 2001353 2002353 2003353 2004353 2005353 2006353 2007353 2008353 2009353
361 1997361 1998361 1999361 2000361 2001361 2002361 2003361 2004361 2005361 2006361 2007361 2008361 2009361


Last modified: 26 July 2024
by:  Toby Westberry

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