Data

IN2023_V06 ACS data

University of Tasmania, Australia
Mears, Chantal ; Schallenberg, Christina
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/B7X5-5S45&rft.title=IN2023_V06 ACS data&rft.identifier=10.25959/B7X5-5S45&rft.description=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.Maintenance and Update Frequency: notPlannedStatement: 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.&rft.creator=Mears, Chantal &rft.creator=Schallenberg, Christina &rft.date=2026&rft.coverage=westlimit=151.185; southlimit=-38.8567; eastlimit=157.918; northlimit=-31.915&rft.coverage=westlimit=151.185; southlimit=-38.8567; eastlimit=157.918; northlimit=-31.915&rft_rights=This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).&rft_rights=Creative Commons Attribution-NonCommercial 4.0 International License https://creativecommons.org/licenses/by-nc/4.0/&rft_rights=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&rft_rights=Data, products and services from IMAS are provided as is without any warranty as to fitness for a particular purpose.&rft_subject=oceans&rft_subject=Absorption and Attenuation Sensor&rft_subject=ACS&rft_subject=Chlorophyll&rft_subject=Blue - Green Slope&rft_subject=Hyperspectral Data&rft_subject=Phytoplankton&rft_subject=PHYTOPLANKTON&rft_subject=FRONTS&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN CIRCULATION&rft_subject=OCEANIC ZONE&rft_subject=Marine Features (Australia) | Marine Features (Australia) | East Australian Current&rft.type=dataset&rft.language=English Access the data
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Non-Commercial Licence view details
CC-BY-NC

Creative Commons Attribution-NonCommercial 4.0 International License
https://creativecommons.org/licenses/by-nc/4.0/

This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).

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

Data, products and services from IMAS are provided "as is" without any warranty as to fitness for a particular purpose.

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Full description

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.

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Maintenance and Update Frequency: notPlanned
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.

Notes

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.

Issued: 10 02 2026

Data time period: 2023-10-08 to 2023-11-01

This dataset is part of a larger collection

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157.918,-31.915 157.918,-38.8567 151.185,-38.8567 151.185,-31.915 157.918,-31.915

154.5515,-35.38585

text: westlimit=151.185; southlimit=-38.8567; eastlimit=157.918; northlimit=-31.915

Subjects
ACS | Absorption and Attenuation Sensor | Blue - Green Slope | Chlorophyll | EARTH SCIENCE | FRONTS | Hyperspectral Data | Marine Features (Australia) | Marine Features (Australia) | East Australian Current | OCEAN CIRCULATION | OCEANIC ZONE | OCEANS | PHYTOPLANKTON | Phytoplankton | oceans |

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Other Information
(DATA ACCESS - IN2023_V06 ACS (.csv))

url : https://data.imas.utas.edu.au/attachments/3a407b8e-bde1-4649-b912-612179dadd46/IN2023_V06_ACS.csv

(Survey Details for IN2023_V06)

url : https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2023_V06

(CSIRO Data Trawler: IN2023_V06)

url : https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2023_V06

local : 00arpt780

local : 0000-0003-4725-1387

local : 03qn8fb07

local : 0000-0002-3073-7500

local : 00arpt780

local : 0000-0003-4725-1387

local : 03qn8fb07

local : 0000-0002-3073-7500

Identifiers
ACN 633 798 857