d4daa16e-67ac-45ed-bb75-fe8cbcb2655e urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T15:27:36 creation ISO 19115 2016 IMOS - Argo Profiles - biogeochemical data d4daa16e-67ac-45ed-bb75-fe8cbcb2655e The IMOS Biogeochemical Argo sub-facility aims to undertake real time monitoring of the broad ocean state around Australia by deploying Biogeochemical Argo floats in scientifically important areas of Australia's Exclusive Economic Zone, surrounding seas and the Southern Ocean. The data presented here, includes all Biogeochemical Argo profiles collected since 2002, and covers the oceans worldwide. In collaboration with the US SOCCOM project, the first IMOS Australia Biogeochemical Argo floats were deployed in the East Australia Current in September 2019. Biogeochemical Argo floats are profiling floats that, in addition to temperature and salinity (this data is provided by the IMOS - Argo Profiles - core data collection, https://catalogue-imos.aodn.org.au/geonetwork/srv/eng/catalog.search#/metadata/4402cb50-e20a-44ee-93e6-4728259250d2), carry sensors to measure any combination of dissolved oxygen, pH, dissolved nitrate, chlorophyll fluorescence, particulate backscatter and incoming solar radiation (data provided for the first 4 variables only). A typical Argo float mission is to profile from 2000 m depth to the sea surface every 10 days. On deployment, the float sinks to a depth of 1000 m and drifts with the ocean currents for 9 days. Then the float sinks deeper to its profile depth (usually 2000 m) before starting to ascend through the water column measuring parameters as it rises. Once at the surface it transmits location and profile data via satellite to land-based Argo data centres. After transmission the float sinks again and repeats the cycle. Each Argo float is identified by a unique identification number called a WMO ID. WMO (World Meteorological Organisation) ID Numbers are assigned to measurement stations and observing platforms to enable researchers to keep track of, and uniquely identify their floats. The average life of the latest model APEX Argo floats are around 3.7 years or approximately 135 cycles. These statistics are for floats with the standard alkaline battery configuration from an analysis by Kobayashi et al (2009). In the Australian Argo program, the floats are deployed with a combination of lithium and alkaline battery packs which extends float lifetime. The Facility floats usually last 5 years. Global / Oceans | Atlantic Ocean Global / Oceans | Indian Ocean Global / Oceans | Pacific Ocean Global / Oceans | Southern Ocean IMOS Node | Bluewater and Climate Marine Features (Australia) | Great Australian Bight, SA/WA Marine Features (Global) | Bay of Bengal Oceans | Ocean Chemistry | Chlorophyll Oceans | Ocean Chemistry | Nitrate Oceans | Ocean Chemistry | Oxygen Oceans | Ocean Chemistry | pH Oceans | Ocean Pressure | Water Pressure Profiling Float | Autonomous Profiling Float Regional Seas | Arabian Sea Regional Seas | Coral Sea Regional Seas | Mediterranean Sea Regional Seas | Philippine Sea Regional Seas | Red Sea Regional Seas | Tasman Sea Regional Seas | Timor Sea Link to Argo User's Manual documentDigital HTML Biogeochemical Argo page on IMOS website documentDigital HTML Biogeochemical Argo Measured Variables webpage documentDigital HTML NetCDF files via THREDDS catalog documentDigital HTML View and download data though the AODN Portal documentDigital HTML imos:argo_profile_bio_map documentDigital Argo Profiles - BGC WMS imos:argo_profile_bio_chla_bcksctt_data documentDigital This OGC WFS service returns filtered geographic information. The returned data (Chlorophyll A - Backscattering) is available in multiple formats including CSV. WFS imos:argo_profile_bio_doxy_data documentDigital This OGC WFS service returns filtered geographic information. The returned data (Oxygen) is available in multiple formats including CSV. WFS imos:argo_profile_bio_nitrate_data documentDigital This OGC WFS service returns filtered geographic information. The returned data (Nitrate) is available in multiple formats including CSV. WFS imos:argo_profile_bio_ph_in_situ_total_data documentDigital This OGC WFS service returns filtered geographic information. The returned data (pH) is available in multiple formats including CSV. WFS OGC WFS help documentation documentDigital HTML argo_profile_bio_map#url documentDigital The ncUrlList is a WFS service that returns a list of URLs matching a query. HTML ncUrlList help documentation documentDigital HTML Website of the Integrated Marine Observing System (IMOS) documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML