Primary productivity time series Arctic

Please send all questions or comments to:

dmitry.petrenko@niersc.spb.ru

Here primary productivity time series (biological organic carbon by phytoplankton) are presented as gridded data sets for the time of available high quality remotely sensed data for the Arctic Ocean. Data are available as monthly fields with spatial resolution of 4 km. Data in the time period 1998-2010. 

To calculate these data we have applied 3 different models

1)      The Behrenfeld et al., 1997

2)      The Behrenfeld et al., 2005

3)      The Marra et al., 2003

We used MODIS and SeaWiFS data.

The ftp directory structure is described below:

/kind of sensor

            -MODIS

            - SeaWiFS

/ MODIS / ocean colour data sources:

            -oc_mod(OceanColour SeaDAS/NASA: chlorophyll concentrations were retrieved by algorithm standard OC3)

            -oc_mod_gsm(OceanColour SeaDAS/NASA: chlorophyll concentrations were retrieved by GSM/NASA algorithm)

            -bhr_mod(Oregon State University data set: Ocean Colour MEASURES Project data (http://adsabs.harvard.edu/abs/2008AGUFMIN51B1156M): chlorophyll concentrations were retrieved by GSM + procedure of cloudiness partial removal)

/ SeaWiFS / ocean colour data sources:

-oc_swf(OceanColour SeaDAS/NASA: chlorophyll concentrations were retrieved by algorithm standard OC4)

            -oc_swf_gsm(OceanColour SeaDAS/NASA: chlorophyll concentrations were retrieved by GSM/NASA algorithm)

            -bhr_swf(Oregon State University data set: Ocean Colour MEASURES Project data (http://adsabs.harvard.edu/abs/2008AGUFMIN51B1156M): chlorophyll concentrations were retrieved by GSM + procedure of cloudiness partial removal)

hdf file naming convention

xxxx_mm_yyyy.mat.hdf

xxxx- abbreviation of the PP retrieving algorithm which have been applied :

a)      Bhr97 – The Behrenfeld algorithm 1997

b)      Bhr2005 – The Behrenfeld algorithm 2005

c)      Marra – The Marra algorithm 2003

 (units of mgC / m**2  per day)

mm- month

yyyy = year

hdf = file type

internal variable  is “pp”

You also can find all data as matlab data (“.mat”)

Coordinate grids are presented as 2 files:

a)      latitude – “lat.hdf” – internal variable is “latitude”

b)      longitude – “lon.hdf” – internal variable is “longitude”