Data
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=54023994-e1aa-479d-a693-c18dfc57a175&rft.title=SRS Satellite Contributed Ocean Colour - MODIS - Aqua Chlorophyll Concentration in the Southern Ocean: Weekly, Johnson et al 2013&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=54023994-e1aa-479d-a693-c18dfc57a175&rft.description=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.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)&rft.creator=Johnson, Robert &rft.date=2014&rft.coverage=northlimit=-29.999999999999996; southlimit=-90.00; westlimit=-180.00; eastLimit=179.90&rft.coverage=northlimit=-29.999999999999996; southlimit=-90.00; westlimit=-180.00; eastLimit=179.90&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=OCEAN COLOR&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN OPTICS&rft_subject=CHLOROPHYLL&rft_subject=OCEAN CHEMISTRY&rft_subject=IMOS Sub-Facility | SRS-MODIS | Aqua OC3 Chlorophyll-a Ocean Colour&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Global / Oceans | Indian Ocean&rft_subject=Global / Oceans | Pacific Ocean&rft_subject=Marine Features (Australia) | Great Australian Bight, SA/WA&rft_subject=Marine Features (Australia) | Bass Strait, TAS/VIC&rft_subject=Global / Oceans | Atlantic Ocean&rft_subject=Regional Seas | Tasman Sea&rft_subject=States, Territories (Australia) | Western Australia&rft_subject=Countries | Australia&rft_subject=States, Territories (Australia) | South Australia&rft_subject=States, Territories (Australia) | Victoria&rft_subject=States, Territories (Australia) | New South Wales&rft_subject=States, Territories (Australia) | Tasmania&rft_subject=Countries | New Zealand&rft_subject=Continents | Antarctica&rft_subject=Countries | Chile&rft_subject=Countries | Argentina&rft_subject=Countries | Brazil&rft_subject=Countries | Uruguay&rft_subject=Countries | South Africa&rft_subject=Aqua&rft_subject=Concentration of inferred chlorophyll from relative fluorescence per unit volume of the water body&rft_subject=ocean colour radiometers&rft.type=dataset&rft.language=English Access the data

Licence & Rights:

Open Licence view details
CC-BY

Creative Commons Attribution 4.0 International License
http://creativecommons.org/licenses/by/4.0

Access:

Open

Brief description

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.

Lineage

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)

Notes

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)

Created: 10 04 2014

Data time period: 04 07 2002 to 2012-12-26

179.9,-30 179.9,-90 0,-90 -180,-90 -180,-30 0,-30 179.9,-30

-0.049999999999997,-60

text: northlimit=-29.999999999999996; southlimit=-90.00; westlimit=-180.00; eastLimit=179.90

Other Information
(Satellite Remote Sensing page on IMOS website)

uri : http://imos.org.au/srs.html

(NetCDF files via THREDDS catalog)

uri : http://thredds.aodn.org.au/thredds/catalog/IMOS/SRS/OC/gridded/contributed/SO-Johnson/chl/8d/aqua/catalog.html

(View and download data though the AODN Portal)

uri : https://portal.aodn.org.au/search

URI : https://portal.aodn.org.au/search?uuid=54023994-e1aa-479d-a693-c18dfc57a175

SRS - OC aqua weekly - WMS layer (srs_oc_contributed_aqua_johnson_8d_url/chlorophyll)

uri : http://geoserver-123.aodn.org.au/geoserver/ncwms

The GoGoDuck subsets and aggregates gridded data. Data is returned as a NetCDF file. (srs_oc_contributed_aqua_johnson_8d_url)

uri : https://processes.aodn.org.au/wps

(GoGoDuck help documentation)

uri : https://help.aodn.org.au/web-services/gogoduck-aggregator/

The ncUrlList is a WFS service that returns a list of URLs matching a query. (srs_oc_contributed_aqua_johnson_8d_url#file_url)

uri : http://geoserver-123.aodn.org.au/geoserver/ows

(ncUrlList help documentation)

uri : https://help.aodn.org.au/web-services/ncurllist-service/

Identifiers
  • global : 54023994-e1aa-479d-a693-c18dfc57a175