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Input Data: CHL

1080 by 2160 Monthly HDF files from VIIRS (GSM) Data

note: data updated 07.09.2018 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.

different grid size or timestep?

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

chl.v.gsm.2012.tar• 2012 data: ~   49 MB of compressed data
chl.v.gsm.2013.tar• 2013 data: ~   49 MB of compressed data
chl.v.gsm.2014.tar• 2014 data: ~   49 MB of compressed data
chl.v.gsm.2015.tar• 2015 data: ~   49 MB of compressed data
chl.v.gsm.2016.tar• 2016 data: ~   49 MB of compressed data
chl.v.gsm.2017.tar• 2017 data: ~   49 MB of compressed data
chl.v.gsm.2018.tar• 2018 data: ~   49 MB of compressed data
chl.v.gsm.2019.tar• 2019 data: ~   49 MB of compressed data
chl.v.gsm.2020.tar• 2020 data: ~   49 MB of compressed data
chl.v.gsm.2021.tar• 2021 data: ~   49 MB of compressed data
chl.v.gsm.2022.tar• 2022 data: ~   13 MB of compressed data

hdf file naming convention

chl.yyyyddd.hdf.gz

chl = chlorophyll (units of mg / m**3 )
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".

clouds have been filled in the input data using our own gap-filling software.

For citation, please reference the Ocean Productivity site for the data.

Monthly Files

 20122013201420152016201720182019202020212022
January 2012001 2013001 2014001 2015001 2016001 2017001 2018001 2019001 2020001 2021001 2022001
February 2012032 2013032 2014032 2015032 2016032 2017032 2018032 2019032 2020032 2021032 2022032
March 2012061 2013060 2014060 2015060 2016061 2017060 2018060 2019060 2020061 2021060 2022060
April 2012092 2013091 2014091 2015091 2016092 2017091 2018091 2019091 2020092 2021091-----
May 2012122 2013121 2014121 2015121 2016122 2017121 2018121 2019121 2020122 2021121-----
June 2012153 2013152 2014152 2015152 2016153 2017152 2018152 2019152 2020153 2021152-----
July 2012183 2013182 2014182 2015182 2016183 2017182 2018182 2019182 2020183 2021182-----
August 2012214 2013213 2014213 2015213 2016214 2017213 2018213 2019213 2020214 2021213-----
September 2012245 2013244 2014244 2015244 2016245 2017244 2018244 2019244 2020245 2021244-----
October 2012275 2013274 2014274 2015274 2016275 2017274 2018274 2019274 2020275 2021274-----
November 2012306 2013305 2014305 2015305 2016306 2017305 2018305 2019305 2020306 2021305-----
December 2012336 2013335 2014335 2015335 2016336 2017335 2018335 2019335 2020336 2021335-----


Last modified: 09 July 2018
by:  Robert O'Malley

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