IMAS Metadata Catalogue
SRS Satellite Contributed Ocean Colour - MODIS - Aqua Chlorophyll Concentration in the Southern Ocean: Weekly, Johnson et al 2013
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.
Simple
Identification info
- Alternate title
- MODIS - Aqua Chlorophyll Concentration in the Southern Ocean: Weekly, Johnson et al 2013
- Date (Creation)
- 2014-04-10T00:00:00
Resource provider
- Credit
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
- Credit
- Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS)
- Credit
- Australian Research Council Centre of Excellence for Climate System Science
- Credit
- Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC)
- Credit
- Australian Antarctic Division (AAD)
- Credit
- Integrated Marine Observing System (IMOS).
- Credit
- National Aeronautics and Space Administration (NASA)
- Status
- On going
Resource provider
Resource provider
- Topic category
-
- Oceans
))
Temporal extent
- Time period
- 2002-07-04T00:00:00 2012-12-26
- NASA/Global Change Master Directory Earth Science Keywords Version 5.3.8
-
- Oceans | Ocean Optics | Ocean Color
- Oceans | Ocean Chemistry | Chlorophyll
- IMOS Keywords Thesaurus
-
- IMOS Sub-Facility | SRS-MODIS | Aqua OC3 Chlorophyll-a Ocean Colour
- AODN Geographic Extents Vocabulary
-
- Global / Oceans | Southern Ocean
- Global / Oceans | Indian Ocean
- Global / Oceans | Pacific Ocean
- Marine Features (Australia) | Great Australian Bight, SA/WA
- Marine Features (Australia) | Bass Strait, TAS/VIC
- Global / Oceans | Atlantic Ocean
- Regional Seas | Tasman Sea
- AODN Geographic Extents Vocabulary
-
- States, Territories (Australia) | Western Australia
- Countries | Australia
- States, Territories (Australia) | South Australia
- States, Territories (Australia) | Victoria
- States, Territories (Australia) | New South Wales
- States, Territories (Australia) | Tasmania
- Countries | New Zealand
- Continents | Antarctica
- Countries | Chile
- Countries | Argentina
- Countries | Brazil
- Countries | Uruguay
- Countries | South Africa
Resource constraints
- Linkage
-
https://licensebuttons.net/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- The citation in a list of references is: "Johnson, Robert (2013), [Title], Institute for Marine and Antarctic Studies, ARC Centre of Excellence for Climate System Science, Antarctic Climate and Ecosystems Cooperative Research Centre. [data-access-URL], accessed [date-of-access]."
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
- Description
- Concentration determined by use of OC3 and OC4 Algorithms, subsequently adjusted for in-situ conditions as described in Johnson et.al. 2013
Identifier
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UMMC
- Name
- Milligrams per cubic metre
Distribution Information
- Distribution format
-
- OnLine resource
- Satellite Remote Sensing page on IMOS website
- OnLine resource
- NetCDF files via THREDDS catalog
- OnLine resource
- View and download data though the AODN Portal
- OnLine resource
-
srs_oc_contributed_aqua_johnson_8d_url/chlorophyll
SRS - OC aqua weekly - WMS layer
- OnLine resource
-
srs_oc_contributed_aqua_johnson_8d_url
The GoGoDuck subsets and aggregates gridded data. Data is returned as a NetCDF file.
- OnLine resource
- GoGoDuck help documentation
- OnLine resource
-
srs_oc_contributed_aqua_johnson_8d_url#file_url
The ncUrlList is a WFS service that returns a list of URLs matching a query.
- OnLine resource
- ncUrlList help documentation
Resource lineage
- Statement
- Original Rrs data were from MODIS-Aqua reprocessing R2013.0 NASA GSFC http://oceandata.sci.gsfc.nasa.gov/MODISA/Mapped/8Day/9km/Rrs/ ****NETCDF FILENAMING CONVENTION FOR AQUA FILES**** The filenaming scheme puts a lot of useful metadata into the filename with the aim of making it easy to parse by machine and eye. Folder D-20120802.G-0720.P-aqua.C-20120802082919.T-d263047n000000.S-m.E-definitive.Z-ok.R-20120802185051/ -- Folder D-20120802.G-0715.P-aqua.C-20120802111359.T-d549724n000000.S-mn.E-definitive.Z-ok.R-20120802185343/ -- Folder D-20120802.G-0710.P-aqua.C-20120802111224.T-d549724n000000.S-mn.E-definitive.Z-ok.R-20120802185344/ -- Folder D-20120802.G-0545.P-aqua.C-20120802101905.T-d549724n000000.S-na.E-definitive.Z-ok.R-20120802185437/ -- Folder D-20120802.G-0540.P-aqua.C-20120802101900.T-d549724n000000.S-cmna.E-definitive.Z-ok.R-20120802185314/ -- Folder D-20120802.G-0535.P-aqua.C-20120802101855.T-d549724n000000.S-cmna.E-definitive.Z-ok.R-20120802185436/ -- Folder D-20120802.G-0405.P-aqua.C-20120802084036.T-d549724n000000.S-qna.E-definitive.Z-ok.R-20120802185313/ -- Folder D-20120802.G-0400.P-aqua.C-20120802084028.T-d549724n000000.S-cqna.E-definitive.Z-ok.R-20120802185314/ Split the names on ‘.’, and then you have NAME-VALUE pairs where D = GMT Date G = GMT Acquisition P = Platform C = Creation date/time (yyyymmddhhmmss) T = number of modis packet types (d=day packets, n=night packets) S = contributing reception stations (a=Alice Springs, c=Crib Pt, m=Murdoch, q=AIMS, n=NASA DAAC) E = Ephemeris (predicted or definitive) Z = L1B processing status (should always be ok for these data) R = date/time of processing of L2 Chl granule (but I forget what R stands for)
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- Aqua
Instrument
Identifier
mdb:MD_Metadata
- Metadata identifier
- urn:uuid/54023994-e1aa-479d-a693-c18dfc57a175
- Language
- English
- Character encoding
- UTF8
Distributor
- Parent metadata
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://catalogue-imos.aodn.org.au:443/geonetwork/srv/api/records/54023994-e1aa-479d-a693-c18dfc57a175
Point of truth URL of this metadata record
- Date info (Creation)
- 2019-01-08T13:52:01
- Date info (Revision)
- 2021-07-23T04:59:05
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
Provided by
