Dataset

IMOS - Satellite Remote Sensing - NOAA20 - 01 day - Chlorophyll-a concentration (GSM model)

The NOAA20 satellite platform carries a VIIRS sensor that observes sunlight reflected from within the ocean surface layer at multiple wavelengths. These multi-spectral measurements are used to infer the concentration of chlorophyll-a (Chl-a), most typically due to phytoplankton, present in the water. There are multiple retrieval algorithms for estimating Chl-a. These data use the Garver-Siegel-Maritorena (GSM) method implemented in the SeaDAS processing software l2gen and described in “Chapter 11, and references therein, of IOCCG Report 5, 2006, (http://ioccg.org/wp-content/uploads/2015/10/ioccg-report-05.pdf).

Data and Resources

HTML

Link to OPENDAP server
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HTML

Satellite Remote Sensing page on IMOS website
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srs_oc_noaa20_chl_gsm_url/chl_gsm
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WCM

srs_oc_noaa20_chl_gsm_url
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HTML

GoGoDuck help documentation
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HTML

srs_oc_noaa20_chl_gsm_url#file_url
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HTML

ncUrlList help documentation
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HTML

Access To AWS Open Data Program registry for the Cloud Optimised version of this dataset
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HTML

Access to Jupyter notebook to query Cloud Optimised converted dataset
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Website of the Integrated Marine Observing System (IMOS)
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PNG

Unnamed resource
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- Download data
HTML

Unnamed resource
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Additional Information

Field	Value
Published (Metadata Record)	05/03/2026
Last updated	05/03/2026
Organisation	Australian Federal Government
License	License Not Specified
Update Frequency	Unknown