IMAS Metadata Catalogue
IN2023_V06 ACS data
This dataset consists of hyperspectral particulate absorption, particulate attenuation, and the first order (calculated) scatter coefficient from a Wetlabs Absorption and Attenuation Sensor (ACS). Data was collected from October 8th to November 1st 2023 aboard the RV Investigator (IN2023_V06). This voyage focused on sampling mesoscale eddies and across frontal features in a strong ecologically significant west boundary current, the East Australian Current (EAC). Throughout the cruise, the sensors continuously measured surface waters through the ships underway system, measuring 87 wavelengths (from 400-735 nm, with ~3 nm spacing) at a rate of 25 times per second. The data was later binned to 30 second intervals and aligned with the ships underway system (data for this can be found here: https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2023_V06). Further information on the methodology for data acquisition and cleaning of the ACS data can be found in Mears et al., 2026.
Simple
Identification info
- Date (Publication)
- 2026-02-10T00:00:00
Identifier
- Title
- Information and documentation - Digital object identifier system
- Citation identifier
- ISO 26324:2012
- Code
- 10.25959/B7X5-5S45
- Codespace
- doi.org
- Description
- Digital Object Identifier (DOI)
Resource provider
Author
Author
- Credit
- This research was supported by a grant of sea time on RV Investigator from the CSIRO Marine National Facility (https://ror.org/01mae9353) and partially supported by Australian Research Council Discovery Grant #DP2301000505.
- Status
- Completed
Author
Point of contact
- Topic category
-
- Oceans
Extent
))
Temporal extent
- Time period
- 2023-10-08 2023-11-01
- Maintenance and update frequency
- Not planned
- Keywords (Theme)
-
- Absorption and Attenuation Sensor
- ACS
- Chlorophyll
- Blue - Green Slope
- Hyperspectral Data
- Keywords (Taxon)
-
- Phytoplankton
- Global Change Master Directory Earth Science Keywords, Version 8.5
Resource constraints
- Use limitation
- Data, products and services from IMAS are provided "as is" without any warranty as to fitness for a particular purpose.
Resource constraints
- Other constraints
- This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).
Resource constraints
- Linkage
-
https://licensebuttons.net/l/by-nc/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution-NonCommercial 4.0 International License
- Alternate title
- CC-BY-NC
- Edition
- 4.0
- Website
-
https://creativecommons.org/licenses/by-nc/4.0/
License Text
- Other constraints
- Cite data as: Mears, C., & Schallenberg, C. (2026). IN2023_V06 ACS data [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/B7X5-5S45
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
Identifier
- Code
- Date/time
- Name
- time
- Name
- dd/MM/yyyy hh:mm:ss
Identifier
- Code
- Latitude
- Name
- lat
- Name
- Degrees North
Identifier
- Code
- Longitude
- Name
- lon
- Name
- Degrees East
Identifier
- Code
- Total Chlorophyll
- Name
- acs_chl
- Name
- mg/m^3
Identifier
- Code
- Blue-green Slope
- Name
- acs_slope
- Name
- m^2/mg
Identifier
- Code
- Particulate Absorption (399-735nm)
- Name
- ap
- Name
- 1/m
Identifier
- Code
- Particulate Attenuation (400 - 739nm)
- Name
- cp
- Name
- 1/m
Identifier
- Code
- Scattering coefficient (399-735nm)
- Name
- bp
- Name
- 1/m
Distribution Information
- Distribution format
-
- CSV
- OnLine resource
- DATA ACCESS - IN2023_V06 ACS (.csv)
- OnLine resource
- Survey Details for IN2023_V06
- OnLine resource
- CSIRO Data Trawler: IN2023_V06
Resource lineage
- Statement
- A Wetlabs hyperspectral ACS recorded underway surface absorption and attenuation continuously throughout the 2023 voyage IN2023_V06. Sampling procedure and cleaning was largely based on methodology created for ACS onboard the TARA Pacific expedition, ACS chlorophyll was calculated following Roseler et al., 2013, while the blue-green slope (estimator for phytoplankton size class) was calculated following methodology in Ciotti et al., 2002. A more extensive break down of the methodology can be seen in Mears et al. 2026.
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
- urn:uuid/3a407b8e-bde1-4649-b912-612179dadd46
- Language
- English
- Character encoding
- UTF8
Type of resource
- Resource scope
- Dataset
- Name
- IMAS Dataset level record
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/3a407b8e-bde1-4649-b912-612179dadd46
Point of truth URL of this metadata record
- Date info (Creation)
- 2026-01-22T00:00:00
- Date info (Revision)
- 2026-02-10T00:00:00
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
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