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IMOS - SRS Satellite Ocean Colour Sub-Facility - Lucinda Jetty Coastal Observatory (LJCO)


Provided by   Australian Ocean Data Network

Researchers: Schroeder, Thomas (Principal investigator) ,  Schroeder, Thomas (Principal investigator) ,  AODN Data Manager (Point of contact, Distributes) ,  Data Officer (Point of contact, Distributes) ,  Data Officer (Point of contact, Distributes)
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Brief description The Lucinda Jetty Coastal Observatory (LJCO) is located on the end of the 5.8 km long Lucinda Jetty (18.52 S, 146.39 E) in the coastal waters of the Great Barrier Reef World Heritage Area close to the Herbert River Estuary and the Hinchinbrook Channel in Queensland. The observatory acquires continuous above and in-water optical measurements with the objective to support satellite ocean colour validation and algorithm development. Data collection and delivery was interrupted in 2011 with tropical cyclone Yasi. Currently, LJCO is the only southern-hemisphere ocean colour validation site integrated into NASA’s AERONET-OC global network of ground-based radiometers and one of a few sites globally that combines the acquisition of both atmospheric and in-water optical measurements. Mounted instruments on the LJCO included: - Met Station (Vaisala WXT520) - Above-water radiometry --- CIMEL SeaPRISM --- Satlantic HyperOCR --- DALEC instrument (added in mid-2016 for continuous hyper-spectral radiometric measurements) -Instrument telemetry --- Power supply --- UPS --- NextG Router --- WETLabs DAPCS --- PC controller --- Automated winch - Underwater optics --- WETLabs WQM --- WETLabs Eco Triplet --- WETLabs ac-s --- WETLabs BB9 - Campbell Scientific submersible pressure transducer The above-water measurements collected at LJCO compromise of multi-spectral water-leaving radiance and atmospheric observations for retrieving aerosol optical properties using an autonomous CIMEL SeaPRISM radiometer, in addition to hyper-spectral down-welling radiance measurements using the a Satlantic Hyper-OCR. In mid 2016 continuous hyper-spectral radiometric measurements were added using the DALEC instrument. The in-water optical measurements consist of conductivity, temperature, pressure, dissolved oxygen, chlorophyll fluorescence and turbidity using a WETLabs WQM, coloured dissolved organic matter (CDOM) fluorescence using a WETLabs EcoTriplet, as well as particulate and dissolved spectral absorption and attenuation coefficients using a WETLabs AC-S. Further, total backscattering coefficients are measured using a WETLabs BB9 radiometer. Additional meteorological and sea state measurements are continuously recorded such as barometric pressure, relative humidity, air emperature, wind speed and direction using a Vaisala WXT520 weather transmitter. Wave height and water temperature are measured with a Campbell Scientific submersible pressure transducer that is used to keep the caged in-water optical instruments at a constant depth. All data streams are processed in delayed-mode with automatic quality control applied and made publicly available through the AODN portal; and the data presented here is the daily in-water generated products.

Lineage Maintenance and Update Frequency: continual

Lineage Statement: The Lucinda Jetty Coastal Observatory (LJCO) will merge two different data streams: - above water measurements of the atmosphere and water leaving radiance - in water measurement of the optical properties. The site gets serviced ideally on fortnightly basis when in-water instruments are rotated and replaced and surface water samples are collected time-optimized for satellite overpasses. Water samples are filtered in the laboratory and subsequently analysed for phytoplankton pigments by High Performance Liquid Chromatography (HPLC). In addition, concentrations of total suspended solids are determined by gravimetric analysis, while algal, non-algal and CDOM spectral absorption is measured, using a dual-beam UV/VIS spectrophotometer fitted with an integrated sphere.

Notes Credit
Australia’s Integrated Marine Observing System (IMOS) is enabled by the National Collaborative Research Infrastructure Strategy (NCRIS). It is operated by a consortium of institutions as an unincorporated joint venture, with the University of Tasmania as Lead Agent.

Notes Credit
CSIRO Oceans and Atmosphere

Notes Credit
Curtin University

Data time period: 09 01 2014

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146.39,-18.52

146.39,-18.52

text: westlimit=146.39; southlimit=-18.52; eastlimit=146.39; northlimit=-18.52

Subjects
Absorption | Alkalinity | BIOLOGICAL CLASSIFICATION | Buoys | Moored Buoys | Carbon Dioxide | Chlorophyll | Conductivity | CTD (Conductivity-Temperature-Depth Profilers) | Coloured Dissolved Organic Matter (CDOM) | Concentration of inferred chlorophyll from relative fluorescence per unit volume of the water body | Concentration of oxygen {O2} per unit volume of the water body | Current Meters/Profilers | Acoustic Doppler Current Profiler (ADCP) | Density of the water body | Downwelling vector irradiance as energy in the atmosphere | EARTH SCIENCE | Electrical conductivity of the water body | Fluorescence | Fluorescence of the water body | Fluorometers | Inorganic Carbon | Nutrients | OCEAN CHEMISTRY | OCEAN CIRCULATION | Ocean Color | Ocean Currents | OCEAN OPTICS | OCEAN PRESSURE | OCEAN TEMPERATURE | OCEANS | Oxygen | Ocean Colour Sub-Facility, Integrated Marine Observing System (IMOS) | Photosynthetically Active Radiation | Phytoplankton | Pigments | PLANKTON | PROTISTS | Particle backscattering coefficient in the water body | Particle volume scattering function in the water body | Practical salinity of the water body | Pressure (measured variable) exerted by the atmosphere | Pressure (measured variable) in the water body exerted by overlying sea water only | Relative humidity of the atmosphere | SALINITY/DENSITY | Scattering | Sky radiance as energy in the atmosphere | Turbidity | Temperature of the atmosphere | Temperature of the water body | Thickness of precipitation amount (liquid water equivalent) in the atmosphere | Total absorption coefficient in the water body | Total attenuation coefficient in the water body | Total backscattering coefficient in the water body | Total volume scattering function in the water body | Turbidity of the water body | Upwelling radiance as energy in the atmosphere | Water Pressure | Water Temperature | Wind from direction in the atmosphere | Wind speed in the atmosphere | coastal structure | dissolved gas sensors | fluorometers | meteorological packages | ocean colour radiometers | oceans | optical backscatter sensors | salinity sensor | water biogeochemical sensor | water temperature sensor |
Other Information
(Lucinda Jetty Coastal Observatory page on IMOS website)

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

(NetCDF files via THREDDS catalog)

uri : https://thredds.aodn.org.au/thredds/catalog/IMOS/SRS/OC/LJCO/catalog.html

(View and download data though the AODN Portal)

uri : https://portal.aodn.org.au/search?uuid=4ac6bf81-cd37-4611-8da8-4d5ae5e2bda3

Lucinda Jetty (imos:srs_oc_ljco_wws_all_products_timeseries_map)

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

The ncUrlList is a WFS service that returns a list of URLs matching a query. (imos:srs_oc_ljco_wws_all_products_timeseries_map#url)

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

(ncUrlList help documentation)

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

This OGC WFS service returns filtered geographic information. The returned data (WQM Hourly FV01 tabular data) is available in multiple formats including CSV. (imos:srs_oc_ljco_wws_hourly_wqm_fv01_timeseries_data)

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

This OGC WFS service returns filtered geographic information. The returned data (WQM Daily FV01 tabular data) is available in multiple formats including CSV. (imos:srs_oc_ljco_wws_daily_wqm_fv01_timeseries_data)

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

This OGC WFS service returns filtered geographic information. The returned data (Ecotriplet Hourly FV01 tabular data) is available in multiple formats including CSV. (imos:srs_oc_ljco_wws_hourly_ecotriplet_fv01_timeseries_data)

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

This OGC WFS service returns filtered geographic information. The returned data (Ecotriplet Daily FV01 tabular data) is available in multiple formats including CSV. (imos:srs_oc_ljco_wws_daily_ecotriplet_fv01_timeseries_data)

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

(OGC WFS help documentation)

uri : https://help.aodn.org.au/web-services/ogc-wfs/

(IMOS radiometry community-of-practice document)

uri : http://content.aodn.org.au/Documents/IMOS/Facilities/satellite_remote_sensing/IMOS_radiometry_community-of-practice_document_v1.0.pdf

(IMOS Radiometry Task Team final report document)

uri : http://content.aodn.org.au/Documents/IMOS/Facilities/satellite_remote_sensing/IMOS-radiometry_RTT-final-report.pdf

Identifiers
  • global : 4ac6bf81-cd37-4611-8da8-4d5ae5e2bda3
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