Measures - User contributions [en]

Products

2015-06-11T19:29:46Z

Stephane:

Click the links (when present) to access data, metadata, and documentation.
 
Questions or comments: please contact stephane@eri.ucsb.edu and fields@eri.ucsb.edu 
 
<ul>
<li> '''''[http://wiki.icess.ucsb.edu/measures/index.php/GSM GSM Products]''''' Products based on the Garver-Siegel-Maritorena remote-sensing-reflectance-spectrum inversion method, including chlorophyll a, CDM (absorption coefficient of CDOM+detritus at 443 nm) and particulate backscattering (coefficient at 443 nm). Global data available in SeaWiFS,Meris, MODIS Aqua, Meris, and merged data products (Maritorena et al., 2002; Maritorena and Siegel, 2005; Maritorena et al., 2010).</li> 
<li>'''''[[NPP Products]]''''' Primary productivity products from VGPM and CBPM (Behrenfeld and Falkowski, 1997; Behrenfeld et al., 2005; Westberry et al., 2008)). Global data available in SeaWiFS and MODIS Aqua - based data products.</li> 
<li>'''''[http://oceancolor.gsfc.nasa.gov/ QAA Products]''''' Inherent Optical properties from the Quasi-Analytical Algorithm (Lee et al., 2002). Now available from the NASA OceanColor Web (http://oceancolor.gsfc.nasa.gov/).
Results of [http://people.eri.ucsb.edu/~stephane/Plots_measures_wiki/matchups_L3_QAA_products_1997_2009.png Level-3 matchups] comparing in situ data to SeaWiFS and MODIS-Aqua QAA products [aph(443), adg(443) and bbp(443)], are available [http://people.eri.ucsb.edu/~stephane/Plots_measures_wiki/matchups_L3_QAA_products_1997_2009.png here]. The in situ data set and protocols used are similar to those described in Maritorena et al., 2010.</li> 
<li>'''''[http://wiki.icess.ucsb.edu/measures/index.php/PSD PSD Products]''''' Particle size distribution products Kostadinov,T.S.,D.A.Siegel, & S. Maritorena (2009) from SeaWiFS monthly Rrs</li> 
<li> '''''[ftp://ftp.eri.ucsb.edu/pub/org/oceancolor/MEaSUREs2014/readme.html#meanChl Merged Operational Chlorophyl]''''' 9km resolution arithmetic mean of SeaWiFS, Aqua, and Meris. 4km resolution after SeaWiFS.</li> 
<li>'''''[ftp://ftp.eri.ucsb.edu/pub/org/oceancolor/MEaSUREs2014/readme.html#oneStopShop Merged Remotely Sensed Reflectance]''''' Rrs from all 3 sensors are collated into a 19 column array.</li>

Products

2015-06-11T19:26:48Z

Stephane:

Products

2015-06-11T19:21:02Z

Stephane:

Measures2006

2012-12-12T23:38:27Z

Stephane:

'''NASA MEaSUREs Ocean Color Product Evaluation Project''' 
''Produce, evaluate & distribute advanced ocean color data products'' 
 
<big>Beyond Chlorophyll: Management, Implementation and Distribution of Innovative Ocean Color Earth Science Data Records</big>
 
PIs: [http://people.eri.ucsb.edu/~stephane/ Stéphane Maritorena], [http://www.icess.ucsb.edu/~davey/ Dave Siegel], [http://essw.bren.ucsb.edu/~frew/ Jim Frew], [http://www.icess.ucsb.edu/~norm/ Norm Nelson] (UCSB) and [http://www.science.oregonstate.edu/bpp/faculty/Behrenfeld/index.html Mike Behrenfeld] (OSU)
 
Quick Start

----

Click on [[Products]] to access data.
Check [[News]] for recent updates.
Click on [[Services]] for access to the OpenDAP server.

 
Project Summary

----

 
Satellite ocean color data products are all too frequently relegated to a single, unique product, the chlorophyll concentration. However, the ocean color signal (the normalized water-leaving radiance spectrum, LwN(lambda)) contains information about other water components or processes such as the concentrations and type of suspended particulate and dissolved materials, the composition of the phytoplankton community and the productivity of the water column. The retrieval and analysis of these and other novel ocean color products are transforming our understanding of ocean biological and biogeochemical processes.

The objective of our MEASURES project is to create and distribute for evaluation a wide variety of established and new ocean color products that are candidates to become Earth Science Data Records (ESDR’s). These products range from ocean optical properties and phytoplankton functional groups to phytoplankton growth rates and carbon-based productivity and some of them will be derived from the data merging of multiple sensors (SeaWiFS, MODIS and possibly MERIS). These new and innovative ocean color products will help address various science questions related to e.g. primary and heterotrophic production, photochemistry, light budget, physiology, phytoplankton functional type, particle size distribution, particulate organic carbon concentration and net primary production rates.

In parallel to the generation of ocean color products we will implement and distribute quality indices for these products so the data users will know what they are getting and how it relates to previous versions of the products, similar satellite data products and in situ validation data. We will also track and manage algorithm and data lineage throughout the process and implement methods for automatically informing users of updated products or analyses. The suite of products that can be considered ocean color ESDR’s will be determined in consultation with our advisory board and data users. Once an agreement will be reached on a particular product, codes, data production and distribution for that product will be transferred to the NASA Ocean Biology Processing Group (OBPG) at the Goddard Space Flight Center (GSFC).

This project is part of the '''M'''aking '''E'''arth '''S'''cience Data Records for '''U'''se in '''R'''esearch '''E'''nvironments ([http://earthdata.nasa.gov/our-community/community-data-system-programs/measures-projects MEaSUREs]) initiative of NASA.

Products

2012-11-15T18:34:32Z

Stephane:

Click the links (when present) to access data, metadata, and documentation.
 
Questions or comments: please contact stephane@eri.ucsb.edu and fields@eri.ucsb.edu 
 
<ul>
<li> '''''[http://wiki.icess.ucsb.edu/measures/index.php/GSM GSM Products]''''' Products based on the Garver-Siegel-Maritorena remote-sensing-reflectance-spectrum inversion method, including chlorophyll a, CDM (absorption coefficient of CDOM+detritus at 443 nm) and particulate backscattering (coefficient at 443 nm). Global data available in SeaWiFS,Meris, MODIS Aqua, Meris, and merged data products (Maritorena et al., 2002; Maritorena and Siegel, 2005; Maritorena et al., 2010).</li> 
<li>'''''[[NPP Products]]''''' Primary productivity products from VGPM and CBPM (Behrenfeld and Falkowski, 1997; Behrenfeld et al., 2005; Westberry et al., 2008)). Global data available in SeaWiFS and MODIS Aqua - based data products.</li> 
<li>'''''[http://oceancolor.gsfc.nasa.gov/ QAA Products]''''' Inherent Optical properties from the Quasi-Analytical Algorithm (Lee et al., 2002). Now available from the NASA OceanColor Web (http://oceancolor.gsfc.nasa.gov/).
Results of [http://people.eri.ucsb.edu/~stephane/Plots_measures_wiki/matchups_L3_QAA_products_1997_2009.png Level-3 matchups] comparing in situ data to SeaWiFS and MODIS-Aqua QAA products [aph(443), adg(443) and bbp(443)], are available [http://people.eri.ucsb.edu/~stephane/Plots_measures_wiki/matchups_L3_QAA_products_1997_2009.png here]. The in situ data set and protocols used are similar to those described in Maritorena et al., 2010.</li> 
<li>'''''[http://wiki.icess.ucsb.edu/measures/index.php/PSD PSD Products]''''' Particle size distribution products Kostadinov,T.S.,D.A.Siegel, & S. Maritorena (2009) from SeaWiFS monthly Rrs</li> 
<li> ''Future products''
<ul>
<li>Kd(λ, UV)</li>
<li>PFT, Phytoplankton Functional Types</li>

Measures2006

2012-05-22T16:55:27Z

Stephane:

'''NASA MEaSUREs Ocean Color Product Evaluation Project''' 
''Produce, evaluate & distribute advanced ocean color data products'' 
 
<big>Beyond Chlorophyll: Management, Implementation and Distribution of Innovative Ocean Color Earth Science Data Records</big>
 
PIs: [http://people.eri.ucsb.edu/~stephane/ Stéphane Maritorena], [http://www.icess.ucsb.edu/~davey/ Dave Siegel], [http://essw.bren.ucsb.edu/~frew/ Jim Frew], [http://www.icess.ucsb.edu/~norm/ Norm Nelson] (UCSB) and [http://www.science.oregonstate.edu/bpp/faculty/Behrenfeld/index.html Mike Behrenfeld] (OSU)
 
Quick Start

----

Click on [[Products]] to access data.
Check [[News]] for recent updates.
Click on [[Services]] for access to the OpenDAP server.

 
Project Summary

----

 
Satellite ocean color data products are all too frequently relegated to a single, unique product, the chlorophyll concentration. However, the ocean color signal (the normalized water-leaving radiance spectrum, LwN(lambda)) contains information about other water components or processes such as the concentrations and type of suspended particulate and dissolved materials, the composition of the phytoplankton community and the productivity of the water column. The retrieval and analysis of these and other novel ocean color products are transforming our understanding of ocean biological and biogeochemical processes.

The objective of our MEASURES project is to create and distribute for evaluation a wide variety of established and new ocean color products that are candidates to become Earth Science Data Records (ESDR’s). These products range from ocean optical properties and phytoplankton functional groups to phytoplankton growth rates and carbon-based productivity and some of them will be derived from the data merging of multiple sensors (SeaWiFS, MODIS and possibly MERIS). These new and innovative ocean color products will help address various science questions related to e.g. primary and heterotrophic production, photochemistry, light budget, physiology, phytoplankton functional type, particle size distribution, particulate organic carbon concentration and net primary production rates.

In parallel to the generation of ocean color products we will implement and distribute quality indices for these products so the data users will know what they are getting and how it relates to previous versions of the products, similar satellite data products and in situ validation data. We will also track and manage algorithm and data lineage throughout the process and implement methods for automatically informing users of updated products or analyses. The suite of products that can be considered ocean color ESDR’s will be determined in consultation with our advisory board and data users. Once an agreement will be reached on a particular product, codes, data production and distribution for that product will be transferred to the NASA Ocean Biology Processing Group (OBPG) at the Goddard Space Flight Center (GSFC).

This project is part of the '''M'''aking '''E'''arth '''S'''cience Data Records for '''U'''se in '''R'''esearch '''E'''nvironments ([http://measures-projects.gsfc.nasa.gov/ MEaSUREs]) initiative of NASA.

GSM

2011-10-03T23:21:28Z

Stephane: /* Metadata */

== GSM Product Family Description ==

The ocean color products available here were made using Level 3, daily, binned imagery from SeaWiFS and MODIS-Aqua. The products themselves are 9km daily, weekly (8D) and monthly imagery of GSM products, confidence intervals and coverage maps. The products were generated using the Garver-Siegel-Maritorena (GSM) model described in: 
 
Maritorena S., D.A. Siegel & A. Peterson. 2002. Optimization of a Semi-Analytical Ocean Color Model for Global Scale Applications. Applied Optics. 41(15): 2705-2714.[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_2002_AO4.pdf pdf] 
 
When multiple sensors are used, the GSM model uses the Normalized Water-Leaving radiances (LwNs) from all available sources over a given bin of the L3 grid as described in: 
 
Maritorena, S. and D.A. Siegel. 2005. Consistent Merging of Satellite Ocean Color Data Sets Using a Bio-Optical Model. Remote Sensing of Environment, 94(4): 429-440.[http://people.eri.ucsb.edu/~stephane/Marito_Siegel_merging_RSE.pdf pdf] 
 
Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf] 
 

'''File Naming convention''': 
---------------- 

For daily files: 
 
Prod_name.YearDay.L3b_DAY.Sat_combo.Proc_vers.Type 
 
where: 
<blockquote>
Prod_name: 
---------- 
<table>
<tr><td>''GSMchl''</td> <td>(Chlorophyll concentration)</td></tr>
<tr><td>''GSMacdm''</td><td>(Dissolved and detrital organic matter absorption coefficent at 443 nm)</td></tr>
<tr><td>''GSMbbp''</td><td>(Particulate backscattering coefficient at 443 nm)</td></tr>
<tr><td>''GSMChl_sig''</td><td>(Confidence interval of the Chl product)</td></tr>
<tr><td>''GSMacdm_sig''</td><td>(Confidence interval of the acdm product)</td></tr>
<tr><td>''GSMbbp_sig''</td><td>(Confidence interval of the bbp product)</td></tr>
<tr><td>''GSMcovMask''</td><td>(Coverage map)</td></tr>
<tr><td>''GSMbin''</td><td>all the above in [http://oceancolor.gsfc.nasa.gov/DOCS/ocformats.html bin-indexed] format</td></tr>
</table>
 
Year: 
---------- 
Year in yyyy format 
 
Day: 
---------- 
Day in ddd format (i.e. sequential day of the year) 
 
Sat_combo: 
---------- 
Describes which sensor or combination of sensors were used to produce the data: 
SeaWiFS only = 01 
MODIS-Aqua only = 02 
SeaWiFS and Aqua = 03 
 
Proc_vers: 
---------- 
Refers to the version of the data. 

'''Note on Version Number'''
Version 6 refers to SeaWiFS [http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=15555;hl=R2010#pid15555, R2010.0] and Aqua [http://oceancolor.gsfc.nasa.gov/WIKI/OCReproc20100MA.html R2010].

 
Type: 
---------- 
Describes the type of file (HDF or PNG) 
 
</blockquote>

'''Examples of daily file names''':
---------------- 
''GSMchl.2003121.L3b_DAY.01.6.hdf'' -> GSM chlorophyll product from SeaWiFS only L3b data for day 121 of 2003 (May 1, 2003), version 6 
 
''GSMacdm.2005021.L3b_DAY.03.5.hdf'' -> GSM acdm(443) product from SeaWiFS and MODIS-Aqua L3b data for day 21 of 2005 (January 21, 2005), version 5 
 
 
For composite data: 
 
Prod_name.SYearSDayEYearEDay_ID.Sat_combo.Proc_vers.Type 
 
<blockquote>
Prod_name: 
---------- 
same as for daily except no GSMcovMask. In the GSMbin product the covMask SDS is
replaced with the number of pixels composited.

Definitions of Sat_combo, Proc_vers and Type are identical to those for the daily files. 
 
YearFDayYearLDay: 
---------- 
Year (in yyyy format) 
First day (in ddd format, i.e. sequential day of the year) of daily data used to create the composite image. 
Year (in yyyy format) 
Last day (in ddd format) of daily data used to create the composite image. 
 
_ID: 
---------- 

is "_4D" for four-day, "_8D" for weekly, and "_MO" for Monthly data 
 
</blockquote>

'''Examples of composite image names''': 
---------------- 

''GSMchl.20030012003031_MO.03.5.hdf'' -> Monthly GSM chlorophyll product from SeaWiFS and Aqua data for January 2003, version 5 
 
''GSMbbp.20050812005088_8D.02.5.hdf'' -> Weekly GSM bbp(443) product from Aqua only data (March 22-29, 2005), version 5 
 
The data products are available in HDF (Hierarchical Data Format) files. Each product is represented in a 4320 x 2160 array. For each time period considered (Day, 8D, Monthly) there is one HDF file per product. HDF files are compressed and will self extract when opening. PNG images are also available for browsing purposes. 
 
'''Product Units''': 
---------------- 
<table>
<tr><td>GSMchl</td><td>mg m-3</td></tr>
<tr><td>GSMacdm</td><td>m-1</td></tr>
<tr><td>GSMbbp</td><td>m-1</td></tr>
<tr></tr>
<tr><td>GSMchl_sig</td><td>mg m-3</td></tr>
<tr><td>GSMacdm_sig</td><td>m-1</td></tr>
<tr><td>GSMbbp_sig</td><td>m-1</td></tr>
</table>
 

== Data (links to FTP site) ==

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Seawifs/ SeaWiFS]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua/ MODIS Aqua (9km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua4km/ MODIS Aqua (4km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Merged/ Merged]

== Acknowledgments & Citation ==

If you use the GSM products for a work that appears in a publication, please give proper credit to our work by citing the 2010 RSE paper:

Maritorena S., Hembise Fanton d’Andon O., Mangin A., Siegel D.A. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002).[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

and/or by mentioning the source of the data in the "Methods" section or the acknowledgements with something like:

The satellite CHL (and/or CDM and/or BBP) data were obtained from the Ocean Color MEaSUREs project at UCSB (http://wiki.icess.ucsb.edu/measures/Products).

== Metadata ==

* GSM01 Validation Results
[http://people.eri.ucsb.edu/~stephane/Plots_measures_wiki/matchups_L3_GSM_products_1997_2009.png Matchups] using daily level-3 data (see Maritorena et al., 2010).

* (recent results TBA)

== Software ==

* [http://www.icess.ucsb.edu/OCisD/request_gsm.html GSM Code (IDL)]

== References ==

Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://www.icess.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

Maritorena, S., and D.A. Siegel,
2005: Consistent merging of satellite ocean color data using a semi-analytical
model, Remote Sensing of the Environment, 94, 429-440. [http://www.icess.ucsb.edu/~davey/MyPapers/MaritorenaSiegel_RSE2005.pdf pdf]

Siegel, D.A.,
Maritorena, S., Nelson, N.B., Hansell, D.A., Lorenzi-Kayser, M., 2002. Global
distribution and dynamics of colored dissolved and detrital organic materials. Journal
of Geophysical Research, 107,
3228, doi:10.1029/2001JC000965. [http://www.icess.ucsb.edu/~davey/MyPapers/Siegel_etal_JGR_2002_GlobalCDOM.pdf pdf]

Maritorena, S., D.A.
Siegel and A.R. Peterson, 2002: Optimization of a semianalytical ocean color
model for global-scale applications. Applied Optics-LP, 41, 2705-2714. [http://www.icess.ucsb.edu/~davey/MyPapers/Maritorena_etal_AO_2002.pdf pdf]

Garver, S.A., and D.A. Siegel, 1997:
Inherent optical property inversion of ocean color spectra and its
biogeochemical interpretation: I. Time series from the Sargasso Sea. Journal
of Geophysical Research., 102,
18,607-18,625. [http://www.icess.ucsb.edu/~davey/MyPapers/GarverSiegel_JGR_1997.pdf pdf]

GSM

2011-10-03T23:19:47Z

Stephane: /* Metadata */

GSM

2011-10-03T23:10:52Z

Stephane: /* GSM Product Family Description */

== GSM Product Family Description ==

The ocean color products available here were made using Level 3, daily, binned imagery from SeaWiFS and MODIS-Aqua. The products themselves are 9km daily, weekly (8D) and monthly imagery of GSM products, confidence intervals and coverage maps. The products were generated using the Garver-Siegel-Maritorena (GSM) model described in: 
 
Maritorena S., D.A. Siegel & A. Peterson. 2002. Optimization of a Semi-Analytical Ocean Color Model for Global Scale Applications. Applied Optics. 41(15): 2705-2714.[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_2002_AO4.pdf pdf] 
 
When multiple sensors are used, the GSM model uses the Normalized Water-Leaving radiances (LwNs) from all available sources over a given bin of the L3 grid as described in: 
 
Maritorena, S. and D.A. Siegel. 2005. Consistent Merging of Satellite Ocean Color Data Sets Using a Bio-Optical Model. Remote Sensing of Environment, 94(4): 429-440.[http://people.eri.ucsb.edu/~stephane/Marito_Siegel_merging_RSE.pdf pdf] 
 
Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf] 
 

'''File Naming convention''': 
---------------- 

For daily files: 
 
Prod_name.YearDay.L3b_DAY.Sat_combo.Proc_vers.Type 
 
where: 
<blockquote>
Prod_name: 
---------- 
<table>
<tr><td>''GSMchl''</td> <td>(Chlorophyll concentration)</td></tr>
<tr><td>''GSMacdm''</td><td>(Dissolved and detrital organic matter absorption coefficent at 443 nm)</td></tr>
<tr><td>''GSMbbp''</td><td>(Particulate backscattering coefficient at 443 nm)</td></tr>
<tr><td>''GSMChl_sig''</td><td>(Confidence interval of the Chl product)</td></tr>
<tr><td>''GSMacdm_sig''</td><td>(Confidence interval of the acdm product)</td></tr>
<tr><td>''GSMbbp_sig''</td><td>(Confidence interval of the bbp product)</td></tr>
<tr><td>''GSMcovMask''</td><td>(Coverage map)</td></tr>
<tr><td>''GSMbin''</td><td>all the above in [http://oceancolor.gsfc.nasa.gov/DOCS/ocformats.html bin-indexed] format</td></tr>
</table>
 
Year: 
---------- 
Year in yyyy format 
 
Day: 
---------- 
Day in ddd format (i.e. sequential day of the year) 
 
Sat_combo: 
---------- 
Describes which sensor or combination of sensors were used to produce the data: 
SeaWiFS only = 01 
MODIS-Aqua only = 02 
SeaWiFS and Aqua = 03 
 
Proc_vers: 
---------- 
Refers to the version of the data. 

'''Note on Version Number'''
Version 6 refers to SeaWiFS [http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=15555;hl=R2010#pid15555, R2010.0] and Aqua [http://oceancolor.gsfc.nasa.gov/WIKI/OCReproc20100MA.html R2010].

 
Type: 
---------- 
Describes the type of file (HDF or PNG) 
 
</blockquote>

'''Examples of daily file names''':
---------------- 
''GSMchl.2003121.L3b_DAY.01.6.hdf'' -> GSM chlorophyll product from SeaWiFS only L3b data for day 121 of 2003 (May 1, 2003), version 6 
 
''GSMacdm.2005021.L3b_DAY.03.5.hdf'' -> GSM acdm(443) product from SeaWiFS and MODIS-Aqua L3b data for day 21 of 2005 (January 21, 2005), version 5 
 
 
For composite data: 
 
Prod_name.SYearSDayEYearEDay_ID.Sat_combo.Proc_vers.Type 
 
<blockquote>
Prod_name: 
---------- 
same as for daily except no GSMcovMask. In the GSMbin product the covMask SDS is
replaced with the number of pixels composited.

Definitions of Sat_combo, Proc_vers and Type are identical to those for the daily files. 
 
YearFDayYearLDay: 
---------- 
Year (in yyyy format) 
First day (in ddd format, i.e. sequential day of the year) of daily data used to create the composite image. 
Year (in yyyy format) 
Last day (in ddd format) of daily data used to create the composite image. 
 
_ID: 
---------- 

is "_4D" for four-day, "_8D" for weekly, and "_MO" for Monthly data 
 
</blockquote>

'''Examples of composite image names''': 
---------------- 

''GSMchl.20030012003031_MO.03.5.hdf'' -> Monthly GSM chlorophyll product from SeaWiFS and Aqua data for January 2003, version 5 
 
''GSMbbp.20050812005088_8D.02.5.hdf'' -> Weekly GSM bbp(443) product from Aqua only data (March 22-29, 2005), version 5 
 
The data products are available in HDF (Hierarchical Data Format) files. Each product is represented in a 4320 x 2160 array. For each time period considered (Day, 8D, Monthly) there is one HDF file per product. HDF files are compressed and will self extract when opening. PNG images are also available for browsing purposes. 
 
'''Product Units''': 
---------------- 
<table>
<tr><td>GSMchl</td><td>mg m-3</td></tr>
<tr><td>GSMacdm</td><td>m-1</td></tr>
<tr><td>GSMbbp</td><td>m-1</td></tr>
<tr></tr>
<tr><td>GSMchl_sig</td><td>mg m-3</td></tr>
<tr><td>GSMacdm_sig</td><td>m-1</td></tr>
<tr><td>GSMbbp_sig</td><td>m-1</td></tr>
</table>
 

== Data (links to FTP site) ==

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Seawifs/ SeaWiFS]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua/ MODIS Aqua (9km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua4km/ MODIS Aqua (4km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Merged/ Merged]

== Acknowledgments & Citation ==

If you use the GSM products for a work that appears in a publication, please give proper credit to our work by citing the 2010 RSE paper:

Maritorena S., Hembise Fanton d’Andon O., Mangin A., Siegel D.A. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002).[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

and/or by mentioning the source of the data in the "Methods" section or the acknowledgements with something like:

The satellite CHL (and/or CDM and/or BBP) data were obtained from the Ocean Color MEaSUREs project at UCSB (http://wiki.icess.ucsb.edu/measures/Products).

== Metadata ==

* GSM01 Validation Results (TBA)

* (recent results TBA)

== Software ==

* [http://www.icess.ucsb.edu/OCisD/request_gsm.html GSM Code (IDL)]

== References ==

Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://www.icess.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

Maritorena, S., and D.A. Siegel,
2005: Consistent merging of satellite ocean color data using a semi-analytical
model, Remote Sensing of the Environment, 94, 429-440. [http://www.icess.ucsb.edu/~davey/MyPapers/MaritorenaSiegel_RSE2005.pdf pdf]

Siegel, D.A.,
Maritorena, S., Nelson, N.B., Hansell, D.A., Lorenzi-Kayser, M., 2002. Global
distribution and dynamics of colored dissolved and detrital organic materials. Journal
of Geophysical Research, 107,
3228, doi:10.1029/2001JC000965. [http://www.icess.ucsb.edu/~davey/MyPapers/Siegel_etal_JGR_2002_GlobalCDOM.pdf pdf]

Maritorena, S., D.A.
Siegel and A.R. Peterson, 2002: Optimization of a semianalytical ocean color
model for global-scale applications. Applied Optics-LP, 41, 2705-2714. [http://www.icess.ucsb.edu/~davey/MyPapers/Maritorena_etal_AO_2002.pdf pdf]

Garver, S.A., and D.A. Siegel, 1997:
Inherent optical property inversion of ocean color spectra and its
biogeochemical interpretation: I. Time series from the Sargasso Sea. Journal
of Geophysical Research., 102,
18,607-18,625. [http://www.icess.ucsb.edu/~davey/MyPapers/GarverSiegel_JGR_1997.pdf pdf]

GSM

2011-10-03T23:07:04Z

Stephane: /* Acknowledgments & Citation */

== GSM Product Family Description ==

The ocean color products available here were made using Level 3, daily, binned imagery from SeaWiFS and MODIS-Aqua. The products themselves are 9km daily, weekly (8D) and monthly imagery of GSM products, confidence intervals and coverage maps. The products were generated using the Garver-Siegel-Maritorena (GSM) model described in: 
 
Maritorena S., D.A. Siegel & A. Peterson. 2002. Optimization of a Semi-Analytical Ocean Color Model for Global Scale Applications. Applied Optics. 41(15): 2705-2714. 
 
When multiple sensors are used, the GSM model uses the Normalized Water-Leaving radiances (LwNs) from all available sources over a given bin of the L3 grid as described in: 
 
Maritorena, S. and D.A. Siegel. 2005. Consistent Merging of Satellite Ocean Color Data Sets Using a Bio-Optical Model. Remote Sensing of Environment, 94(4): 429-440. 
 
Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). 
 

'''File Naming convention''': 
---------------- 

For daily files: 
 
Prod_name.YearDay.L3b_DAY.Sat_combo.Proc_vers.Type 
 
where: 
<blockquote>
Prod_name: 
---------- 
<table>
<tr><td>''GSMchl''</td> <td>(Chlorophyll concentration)</td></tr>
<tr><td>''GSMacdm''</td><td>(Dissolved and detrital organic matter absorption coefficent at 443 nm)</td></tr>
<tr><td>''GSMbbp''</td><td>(Particulate backscattering coefficient at 443 nm)</td></tr>
<tr><td>''GSMChl_sig''</td><td>(Confidence interval of the Chl product)</td></tr>
<tr><td>''GSMacdm_sig''</td><td>(Confidence interval of the acdm product)</td></tr>
<tr><td>''GSMbbp_sig''</td><td>(Confidence interval of the bbp product)</td></tr>
<tr><td>''GSMcovMask''</td><td>(Coverage map)</td></tr>
<tr><td>''GSMbin''</td><td>all the above in [http://oceancolor.gsfc.nasa.gov/DOCS/ocformats.html bin-indexed] format</td></tr>
</table>
 
Year: 
---------- 
Year in yyyy format 
 
Day: 
---------- 
Day in ddd format (i.e. sequential day of the year) 
 
Sat_combo: 
---------- 
Describes which sensor or combination of sensors were used to produce the data: 
SeaWiFS only = 01 
MODIS-Aqua only = 02 
SeaWiFS and Aqua = 03 
 
Proc_vers: 
---------- 
Refers to the version of the data. 

'''Note on Version Number'''
Version 6 refers to SeaWiFS [http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=15555;hl=R2010#pid15555, R2010.0] and Aqua [http://oceancolor.gsfc.nasa.gov/WIKI/OCReproc20100MA.html R2010].

 
Type: 
---------- 
Describes the type of file (HDF or PNG) 
 
</blockquote>

'''Examples of daily file names''':
---------------- 
''GSMchl.2003121.L3b_DAY.01.6.hdf'' -> GSM chlorophyll product from SeaWiFS only L3b data for day 121 of 2003 (May 1, 2003), version 6 
 
''GSMacdm.2005021.L3b_DAY.03.5.hdf'' -> GSM acdm(443) product from SeaWiFS and MODIS-Aqua L3b data for day 21 of 2005 (January 21, 2005), version 5 
 
 
For composite data: 
 
Prod_name.SYearSDayEYearEDay_ID.Sat_combo.Proc_vers.Type 
 
<blockquote>
Prod_name: 
---------- 
same as for daily except no GSMcovMask. In the GSMbin product the covMask SDS is
replaced with the number of pixels composited.

Definitions of Sat_combo, Proc_vers and Type are identical to those for the daily files. 
 
YearFDayYearLDay: 
---------- 
Year (in yyyy format) 
First day (in ddd format, i.e. sequential day of the year) of daily data used to create the composite image. 
Year (in yyyy format) 
Last day (in ddd format) of daily data used to create the composite image. 
 
_ID: 
---------- 

is "_4D" for four-day, "_8D" for weekly, and "_MO" for Monthly data 
 
</blockquote>

'''Examples of composite image names''': 
---------------- 

''GSMchl.20030012003031_MO.03.5.hdf'' -> Monthly GSM chlorophyll product from SeaWiFS and Aqua data for January 2003, version 5 
 
''GSMbbp.20050812005088_8D.02.5.hdf'' -> Weekly GSM bbp(443) product from Aqua only data (March 22-29, 2005), version 5 
 
The data products are available in HDF (Hierarchical Data Format) files. Each product is represented in a 4320 x 2160 array. For each time period considered (Day, 8D, Monthly) there is one HDF file per product. HDF files are compressed and will self extract when opening. PNG images are also available for browsing purposes. 
 
'''Product Units''': 
---------------- 
<table>
<tr><td>GSMchl</td><td>mg m-3</td></tr>
<tr><td>GSMacdm</td><td>m-1</td></tr>
<tr><td>GSMbbp</td><td>m-1</td></tr>
<tr></tr>
<tr><td>GSMchl_sig</td><td>mg m-3</td></tr>
<tr><td>GSMacdm_sig</td><td>m-1</td></tr>
<tr><td>GSMbbp_sig</td><td>m-1</td></tr>
</table>
 

== Data (links to FTP site) ==

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Seawifs/ SeaWiFS]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua/ MODIS Aqua (9km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua4km/ MODIS Aqua (4km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Merged/ Merged]

== Acknowledgments & Citation ==

If you use the GSM products for a work that appears in a publication, please give proper credit to our work by citing the 2010 RSE paper:

Maritorena S., Hembise Fanton d’Andon O., Mangin A., Siegel D.A. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002).[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

and/or by mentioning the source of the data in the "Methods" section or the acknowledgements with something like:

The satellite CHL (and/or CDM and/or BBP) data were obtained from the Ocean Color MEaSUREs project at UCSB (http://wiki.icess.ucsb.edu/measures/Products).

== Metadata ==

* GSM01 Validation Results (TBA)

* (recent results TBA)

== Software ==

* [http://www.icess.ucsb.edu/OCisD/request_gsm.html GSM Code (IDL)]

== References ==

Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://www.icess.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

Maritorena, S., and D.A. Siegel,
2005: Consistent merging of satellite ocean color data using a semi-analytical
model, Remote Sensing of the Environment, 94, 429-440. [http://www.icess.ucsb.edu/~davey/MyPapers/MaritorenaSiegel_RSE2005.pdf pdf]

Siegel, D.A.,
Maritorena, S., Nelson, N.B., Hansell, D.A., Lorenzi-Kayser, M., 2002. Global
distribution and dynamics of colored dissolved and detrital organic materials. Journal
of Geophysical Research, 107,
3228, doi:10.1029/2001JC000965. [http://www.icess.ucsb.edu/~davey/MyPapers/Siegel_etal_JGR_2002_GlobalCDOM.pdf pdf]

Maritorena, S., D.A.
Siegel and A.R. Peterson, 2002: Optimization of a semianalytical ocean color
model for global-scale applications. Applied Optics-LP, 41, 2705-2714. [http://www.icess.ucsb.edu/~davey/MyPapers/Maritorena_etal_AO_2002.pdf pdf]

Garver, S.A., and D.A. Siegel, 1997:
Inherent optical property inversion of ocean color spectra and its
biogeochemical interpretation: I. Time series from the Sargasso Sea. Journal
of Geophysical Research., 102,
18,607-18,625. [http://www.icess.ucsb.edu/~davey/MyPapers/GarverSiegel_JGR_1997.pdf pdf]

GSM

2011-10-03T23:06:14Z

Stephane: /* Acknowledgments & Citation */

== GSM Product Family Description ==

The ocean color products available here were made using Level 3, daily, binned imagery from SeaWiFS and MODIS-Aqua. The products themselves are 9km daily, weekly (8D) and monthly imagery of GSM products, confidence intervals and coverage maps. The products were generated using the Garver-Siegel-Maritorena (GSM) model described in: 
 
Maritorena S., D.A. Siegel & A. Peterson. 2002. Optimization of a Semi-Analytical Ocean Color Model for Global Scale Applications. Applied Optics. 41(15): 2705-2714. 
 
When multiple sensors are used, the GSM model uses the Normalized Water-Leaving radiances (LwNs) from all available sources over a given bin of the L3 grid as described in: 
 
Maritorena, S. and D.A. Siegel. 2005. Consistent Merging of Satellite Ocean Color Data Sets Using a Bio-Optical Model. Remote Sensing of Environment, 94(4): 429-440. 
 
Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). 
 

'''File Naming convention''': 
---------------- 

For daily files: 
 
Prod_name.YearDay.L3b_DAY.Sat_combo.Proc_vers.Type 
 
where: 
<blockquote>
Prod_name: 
---------- 
<table>
<tr><td>''GSMchl''</td> <td>(Chlorophyll concentration)</td></tr>
<tr><td>''GSMacdm''</td><td>(Dissolved and detrital organic matter absorption coefficent at 443 nm)</td></tr>
<tr><td>''GSMbbp''</td><td>(Particulate backscattering coefficient at 443 nm)</td></tr>
<tr><td>''GSMChl_sig''</td><td>(Confidence interval of the Chl product)</td></tr>
<tr><td>''GSMacdm_sig''</td><td>(Confidence interval of the acdm product)</td></tr>
<tr><td>''GSMbbp_sig''</td><td>(Confidence interval of the bbp product)</td></tr>
<tr><td>''GSMcovMask''</td><td>(Coverage map)</td></tr>
<tr><td>''GSMbin''</td><td>all the above in [http://oceancolor.gsfc.nasa.gov/DOCS/ocformats.html bin-indexed] format</td></tr>
</table>
 
Year: 
---------- 
Year in yyyy format 
 
Day: 
---------- 
Day in ddd format (i.e. sequential day of the year) 
 
Sat_combo: 
---------- 
Describes which sensor or combination of sensors were used to produce the data: 
SeaWiFS only = 01 
MODIS-Aqua only = 02 
SeaWiFS and Aqua = 03 
 
Proc_vers: 
---------- 
Refers to the version of the data. 

'''Note on Version Number'''
Version 6 refers to SeaWiFS [http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=15555;hl=R2010#pid15555, R2010.0] and Aqua [http://oceancolor.gsfc.nasa.gov/WIKI/OCReproc20100MA.html R2010].

 
Type: 
---------- 
Describes the type of file (HDF or PNG) 
 
</blockquote>

'''Examples of daily file names''':
---------------- 
''GSMchl.2003121.L3b_DAY.01.6.hdf'' -> GSM chlorophyll product from SeaWiFS only L3b data for day 121 of 2003 (May 1, 2003), version 6 
 
''GSMacdm.2005021.L3b_DAY.03.5.hdf'' -> GSM acdm(443) product from SeaWiFS and MODIS-Aqua L3b data for day 21 of 2005 (January 21, 2005), version 5 
 
 
For composite data: 
 
Prod_name.SYearSDayEYearEDay_ID.Sat_combo.Proc_vers.Type 
 
<blockquote>
Prod_name: 
---------- 
same as for daily except no GSMcovMask. In the GSMbin product the covMask SDS is
replaced with the number of pixels composited.

Definitions of Sat_combo, Proc_vers and Type are identical to those for the daily files. 
 
YearFDayYearLDay: 
---------- 
Year (in yyyy format) 
First day (in ddd format, i.e. sequential day of the year) of daily data used to create the composite image. 
Year (in yyyy format) 
Last day (in ddd format) of daily data used to create the composite image. 
 
_ID: 
---------- 

is "_4D" for four-day, "_8D" for weekly, and "_MO" for Monthly data 
 
</blockquote>

'''Examples of composite image names''': 
---------------- 

''GSMchl.20030012003031_MO.03.5.hdf'' -> Monthly GSM chlorophyll product from SeaWiFS and Aqua data for January 2003, version 5 
 
''GSMbbp.20050812005088_8D.02.5.hdf'' -> Weekly GSM bbp(443) product from Aqua only data (March 22-29, 2005), version 5 
 
The data products are available in HDF (Hierarchical Data Format) files. Each product is represented in a 4320 x 2160 array. For each time period considered (Day, 8D, Monthly) there is one HDF file per product. HDF files are compressed and will self extract when opening. PNG images are also available for browsing purposes. 
 
'''Product Units''': 
---------------- 
<table>
<tr><td>GSMchl</td><td>mg m-3</td></tr>
<tr><td>GSMacdm</td><td>m-1</td></tr>
<tr><td>GSMbbp</td><td>m-1</td></tr>
<tr></tr>
<tr><td>GSMchl_sig</td><td>mg m-3</td></tr>
<tr><td>GSMacdm_sig</td><td>m-1</td></tr>
<tr><td>GSMbbp_sig</td><td>m-1</td></tr>
</table>
 

== Data (links to FTP site) ==

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Seawifs/ SeaWiFS]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua/ MODIS Aqua (9km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Aqua4km/ MODIS Aqua (4km)]

* [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/Merged/ Merged]

== Acknowledgments & Citation ==

If you use the GSM products for a work that appears in a publication, please give proper credit to our work by citing the 2010 RSE paper:

Maritorena S., Hembise Fanton d’Andon O., Mangin A., Siegel D.A. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002).[http://people.eri.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf]

and/or by mentioning the source of the data in the "Methods" section or the acknowledgements with something like:

The satellite CHL (and/or CDM and/or BBP) data were obtained from the Ocean Color MEaSUREs project at UCSB (http://wiki.icess.ucsb.edu/measures/Products).

== Metadata ==

* GSM01 Validation Results (TBA)

* (recent results TBA)

== Software ==

* [http://www.icess.ucsb.edu/OCisD/request_gsm.html GSM Code (IDL)]

== References ==

Maritorena S., O. Hembise Fanton d’Andon, A. Mangin, D.A. Siegel. 2010. Merged Satellite Ocean Color Data Products Using a Bio-Optical Model: Characteristics, Benefits and Issues. Remote Sensing of Environment, 114, 8: 1791-1804 (doi: 10.1016/j.rse.2010.04.002). [http://www.icess.ucsb.edu/~stephane/Maritorena_et_al_RSE_2010.pdf pdf]

Maritorena, S., and D.A. Siegel,
2005: Consistent merging of satellite ocean color data using a semi-analytical
model, Remote Sensing of the Environment, 94, 429-440. [http://www.icess.ucsb.edu/~davey/MyPapers/MaritorenaSiegel_RSE2005.pdf pdf]

Siegel, D.A.,
Maritorena, S., Nelson, N.B., Hansell, D.A., Lorenzi-Kayser, M., 2002. Global
distribution and dynamics of colored dissolved and detrital organic materials. Journal
of Geophysical Research, 107,
3228, doi:10.1029/2001JC000965. [http://www.icess.ucsb.edu/~davey/MyPapers/Siegel_etal_JGR_2002_GlobalCDOM.pdf pdf]

Maritorena, S., D.A.
Siegel and A.R. Peterson, 2002: Optimization of a semianalytical ocean color
model for global-scale applications. Applied Optics-LP, 41, 2705-2714. [http://www.icess.ucsb.edu/~davey/MyPapers/Maritorena_etal_AO_2002.pdf pdf]

Garver, S.A., and D.A. Siegel, 1997:
Inherent optical property inversion of ocean color spectra and its
biogeochemical interpretation: I. Time series from the Sargasso Sea. Journal
of Geophysical Research., 102,
18,607-18,625. [http://www.icess.ucsb.edu/~davey/MyPapers/GarverSiegel_JGR_1997.pdf pdf]

2009-01-09T17:25:00Z

Stephane:

<big>'''NASA MEASuRES Ocean Color Product Evaluation Project'''</big>

''Produce, evaluate & distribute advanced ocean color data products'' 
<big>[http://wiki.icess.ucsb.edu/measures/index.php/Measures:About About MEASuRES at ICESS]</big>

== GSM products by data dource ==

* [[Seawifs]]
* [[AQUA]]
* [[Merged]]

 


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