670d2929-f0ad-4751-9434-4a944beb7ccb urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T15:12:05 creation ISO 19115 2016 Satellite Remote Sensing - Satellite Contributed Ocean Colour - MODIS - Aqua Chlorophyll Concentration in the Southern Ocean: Weekly, Johnson et al 2013 670d2929-f0ad-4751-9434-4a944beb7ccb The Aqua and Orbview satellites carry a MODIS and SeaWIFS sensors (respectively) 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 and aggregating the data over time. This data set is a reprocessed copy of 9km monthly and 8-day versions produced globally by NASA, adjusted for the Southern Ocean south of latitude 30S. The full methodology is described in Johnson, R., Strutton, P.G., Wright, S.W., McMinn, A., Meiners, K.M., 2013. Three improved satellite chlorophyll algorithms for the Southern Ocean. Journal of Geophysical Research: Oceans. doi: 10.1002/jgrc.20270. It is expected that the data set will be periodically updated with contemporary data as it becomes available. There are four sub-streams within this data set. A monthly and an 8-day series for MODIS/Aqua and similarly for SeaWIFS. Note that SeaWIFS ceased operation in late 2010 so there will be no further SeaWIFS data. The data represented by this record is weekly data for MODIS/Aqua. {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [179.9, -90.0], [179.9, -29.999999999999996], [-180.0, -29.999999999999996], [-180.0, -90.0]]]} -180.0 179.9 -90.0 -29.999999999999996 Continents | Antarctica Countries | Argentina Countries | Australia Countries | Brazil Countries | Chile Countries | New Zealand Countries | South Africa Countries | Uruguay Global / Oceans | Atlantic Ocean Global / Oceans | Indian Ocean Global / Oceans | Pacific Ocean Global / Oceans | Southern Ocean IMOS Sub-Facility | SRS-MODIS | Aqua OC3 Chlorophyll-a Ocean Colour Marine Features (Australia) | Bass Strait, TAS/VIC Marine Features (Australia) | Great Australian Bight, SA/WA Oceans | Ocean Chemistry | Chlorophyll Oceans | Ocean Optics | Ocean Color Regional Seas | Tasman Sea States, Territories (Australia) | New South Wales States, Territories (Australia) | South Australia States, Territories (Australia) | Tasmania States, Territories (Australia) | Victoria States, Territories (Australia) | Western Australia Satellite Remote Sensing page on IMOS website documentDigital HTML NetCDF files via THREDDS catalog documentDigital HTML View and download data though the AODN Portal documentDigital HTML srs_oc_contributed_aqua_johnson_8d_url/chlorophyll documentDigital SRS - OC aqua weekly - WMS layer HTML srs_oc_contributed_aqua_johnson_8d_url documentDigital The GoGoDuck subsets and aggregates gridded data. Data is returned as a NetCDF file. WCM GoGoDuck help documentation documentDigital HTML srs_oc_contributed_aqua_johnson_8d_url#file_url documentDigital The ncUrlList is a WFS service that returns a list of URLs matching a query. HTML ncUrlList help documentation documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML