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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

2160 by 4320 8day HDF files from MODIS R2022 Data

note: data updated 03.20.2023 using the new MODIS.R2022 reprocessing results

note: data updated 02.20.2018 using the new MODIS.R2018 reprocessing results
note: data updated 08.05.2015 using the new MODIS.R2014 reprocessing results
all data files now based on modis chlor_a and 11-micron daytime SST values
note: data updated 12.13.2013 using the new MODIS.R2013.1 reprocessing results
data files starting with 2012209 are all new ... data before that are unchanged
note: all data updated 4.04.2013 using the new MODIS.R2013 reprocessing results
note: all data updated 6.15.2012 using the new MODIS.R2012 reprocessing results
note: all data updated 8.09.2011 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 5.25.2010 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 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.m.2002.tar• 2002 data: ~ 354 MB of compressed data
eppley.m.2003.tar• 2003 data: ~ 704 MB of compressed data
eppley.m.2004.tar• 2004 data: ~ 704 MB of compressed data
eppley.m.2005.tar• 2005 data: ~ 707 MB of compressed data
eppley.m.2006.tar• 2006 data: ~ 706 MB of compressed data
eppley.m.2007.tar• 2007 data: ~ 705 MB of compressed data
eppley.m.2008.tar• 2008 data: ~ 703 MB of compressed data
eppley.m.2009.tar• 2009 data: ~ 703 MB of compressed data
eppley.m.2010.tar• 2010 data: ~ 704 MB of compressed data
eppley.m.2011.tar• 2011 data: ~ 706 MB of compressed data
eppley.m.2012.tar• 2012 data: ~ 705 MB of compressed data
eppley.m.2013.tar• 2013 data: ~ 703 MB of compressed data
eppley.m.2014.tar• 2014 data: ~ 702 MB of compressed data
eppley.m.2015.tar• 2015 data: ~ 704 MB of compressed data
eppley.m.2016.tar• 2016 data: ~ 709 MB of compressed data
eppley.m.2017.tar• 2017 data: ~ 709 MB of compressed data
eppley.m.2018.tar• 2018 data: ~ 709 MB of compressed data
eppley.m.2019.tar• 2019 data: ~ 710 MB of compressed data
eppley.m.2020.tar• 2020 data: ~ 709 MB of compressed data
eppley.m.2021.tar• 2021 data: ~ 708 MB of compressed data
eppley.m.2022.tar• 2022 data: ~ 675 MB of compressed data
eppley.m.2023.tar• 2023 data: ~ 705 MB of compressed data
eppley.m.2024.tar• 2024 data: ~   65 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 8ay 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.

8day Files

starting day20022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024
001----- 2003001 2004001 2005001 2006001 2007001 2008001 2009001 2010001 2011001 2012001 2013001 2014001 2015001 2016001 2017001 2018001 2019001 2020001 2021001 2022001 2023001 2024001
009----- 2003009 2004009 2005009 2006009 2007009 2008009 2009009 2010009 2011009 2012009 2013009 2014009 2015009 2016009 2017009 2018009 2019009 2020009 2021009 2022009 2023009 2024009
017----- 2003017 2004017 2005017 2006017 2007017 2008017 2009017 2010017 2011017 2012017 2013017 2014017 2015017 2016017 2017017 2018017 2019017 2020017 2021017 2022017 2023017 2024017
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105----- 2003105 2004105 2005105 2006105 2007105 2008105 2009105 2010105 2011105 2012105 2013105 2014105 2015105 2016105 2017105 2018105 2019105 2020105 2021105 2022105 2023105-----
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153----- 2003153 2004153 2005153 2006153 2007153 2008153 2009153 2010153 2011153 2012153 2013153 2014153 2015153 2016153 2017153 2018153 2019153 2020153 2021153 2022153 2023153-----
161----- 2003161 2004161 2005161 2006161 2007161 2008161 2009161 2010161 2011161 2012161 2013161 2014161 2015161 2016161 2017161 2018161 2019161 2020161 2021161 2022161 2023161-----
169----- 2003169 2004169 2005169 2006169 2007169 2008169 2009169 2010169 2011169 2012169 2013169 2014169 2015169 2016169 2017169 2018169 2019169 2020169 2021169 2022169 2023169-----
177----- 2003177 2004177 2005177 2006177 2007177 2008177 2009177 2010177 2011177 2012177 2013177 2014177 2015177 2016177 2017177 2018177 2019177 2020177 2021177 2022177 2023177-----
185 2002185 2003185 2004185 2005185 2006185 2007185 2008185 2009185 2010185 2011185 2012185 2013185 2014185 2015185 2016185 2017185 2018185 2019185 2020185 2021185 2022185 2023185-----
193 2002193 2003193 2004193 2005193 2006193 2007193 2008193 2009193 2010193 2011193 2012193 2013193 2014193 2015193 2016193 2017193 2018193 2019193 2020193 2021193 2022193 2023193-----
201 2002201 2003201 2004201 2005201 2006201 2007201 2008201 2009201 2010201 2011201 2012201 2013201 2014201 2015201 2016201 2017201 2018201 2019201 2020201 2021201 2022201 2023201-----
209 2002209 2003209 2004209 2005209 2006209 2007209 2008209 2009209 2010209 2011209 2012209 2013209 2014209 2015209 2016209 2017209 2018209 2019209 2020209 2021209 2022209 2023209-----
217 2002217 2003217 2004217 2005217 2006217 2007217 2008217 2009217 2010217 2011217 2012217 2013217 2014217 2015217 2016217 2017217 2018217 2019217 2020217 2021217 2022217 2023217-----
225 2002225 2003225 2004225 2005225 2006225 2007225 2008225 2009225 2010225 2011225 2012225 2013225 2014225 2015225 2016225 2017225 2018225 2019225 2020225 2021225 2022225 2023225-----
233 2002233 2003233 2004233 2005233 2006233 2007233 2008233 2009233 2010233 2011233 2012233 2013233 2014233 2015233 2016233 2017233 2018233 2019233 2020233 2021233 2022233 2023233-----
241 2002241 2003241 2004241 2005241 2006241 2007241 2008241 2009241 2010241 2011241 2012241 2013241 2014241 2015241 2016241 2017241 2018241 2019241 2020241 2021241 2022241 2023241-----
249 2002249 2003249 2004249 2005249 2006249 2007249 2008249 2009249 2010249 2011249 2012249 2013249 2014249 2015249 2016249 2017249 2018249 2019249 2020249 2021249 2022249 2023249-----
257 2002257 2003257 2004257 2005257 2006257 2007257 2008257 2009257 2010257 2011257 2012257 2013257 2014257 2015257 2016257 2017257 2018257 2019257 2020257 2021257 2022257 2023257-----
265 2002265 2003265 2004265 2005265 2006265 2007265 2008265 2009265 2010265 2011265 2012265 2013265 2014265 2015265 2016265 2017265 2018265 2019265 2020265 2021265 2022265 2023265-----
273 2002273 2003273 2004273 2005273 2006273 2007273 2008273 2009273 2010273 2011273 2012273 2013273 2014273 2015273 2016273 2017273 2018273 2019273 2020273 2021273 2022273 2023273-----
281 2002281 2003281 2004281 2005281 2006281 2007281 2008281 2009281 2010281 2011281 2012281 2013281 2014281 2015281 2016281 2017281 2018281 2019281 2020281 2021281 2022281 2023281-----
289 2002289 2003289 2004289 2005289 2006289 2007289 2008289 2009289 2010289 2011289 2012289 2013289 2014289 2015289 2016289 2017289 2018289 2019289 2020289 2021289 2022289 2023289-----
297 2002297 2003297 2004297 2005297 2006297 2007297 2008297 2009297 2010297 2011297 2012297 2013297 2014297 2015297 2016297 2017297 2018297 2019297 2020297 2021297 2022297 2023297-----
305 2002305 2003305 2004305 2005305 2006305 2007305 2008305 2009305 2010305 2011305 2012305 2013305 2014305 2015305 2016305 2017305 2018305 2019305 2020305 2021305 2022305 2023305-----
313 2002313 2003313 2004313 2005313 2006313 2007313 2008313 2009313 2010313 2011313 2012313 2013313 2014313 2015313 2016313 2017313 2018313 2019313 2020313 2021313 2022313 2023313-----
321 2002321 2003321 2004321 2005321 2006321 2007321 2008321 2009321 2010321 2011321 2012321 2013321 2014321 2015321 2016321 2017321 2018321 2019321 2020321 2021321 2022321 2023321-----
329 2002329 2003329 2004329 2005329 2006329 2007329 2008329 2009329 2010329 2011329 2012329 2013329 2014329 2015329 2016329 2017329 2018329 2019329 2020329 2021329 2022329 2023329-----
337 2002337 2003337 2004337 2005337 2006337 2007337 2008337 2009337 2010337 2011337 2012337 2013337 2014337 2015337 2016337 2017337 2018337 2019337 2020337 2021337 2022337 2023337-----
345 2002345 2003345 2004345 2005345 2006345 2007345 2008345 2009345 2010345 2011345 2012345 2013345 2014345 2015345 2016345 2017345 2018345 2019345 2020345 2021345 2022345 2023345-----
353 2002353 2003353 2004353 2005353 2006353 2007353 2008353 2009353 2010353 2011353 2012353 2013353 2014353 2015353 2016353 2017353 2018353 2019353 2020353 2021353 2022353 2023353-----
361 2002361 2003361 2004361 2005361 2006361 2007361 2008361 2009361 2010361 2011361 2012361 2013361 2014361 2015361 2016361 2017361 2018361 2019361 2020361 2021361 2022361 2023361-----


Last modified: 26 July 2024
by:  Toby Westberry

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