Data

Australian Ocean Surface Waves Dataset from SAR

Integrated Marine Observing System
Khan, Salman ; Hemer, Mark ; Echevarria, Emilio ; King, Edward
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=info:doiDOI: 10.26198/5e14142d01539&rft.title=Australian Ocean Surface Waves Dataset from SAR&rft.identifier=DOI: 10.26198/5e14142d01539&rft.description=Sentinel-1 A and B satellites are part of Europe’s Copernicus Earth Observation program and carry identical C-band Synthetic Aperture Radar (SAR) instruments. Over open-ocean, they operate in wave mode and collect directional wave measurements globally. This dataset contains Sentinel-1 SAR directional ocean swell wave number spectra, spectral partitions and partition bulks in the Australasian region including the Pacific islands (note - this dataset also contains many along-track observations outside this region, and are included due to overlap with the region of interest), this mission has flown since 2014, with data delivered from July 2015. The data includes both delayed-mode and Near Real Time (NRT) data streams. Systematic surface wave acquisitions from Sentinel-1 began in July, 2015 with only Sentinel-1 A in orbit, and were increased with the addition of Sentinel-1 B, which started regular wave measurements from Oct, 2016. The delayed-mode data processed and delivered from Sentinel-1 platforms cover this time span through to Mar, 2022 and consists of daily netCDF files, while the NRT component of the dataset is producing a 6-hourly netCDF file for each platform (A and B) and includes data that has been acquired in (approximately) the previous 24 hours. The data have been homogenised to a single, easily usable format from inconsistent source product by removing various discrepancies such as inconsistencies in wave number bins and values, variables and erroneous measurements over land. The ongoing IMOS (Integrated Marine Observing System) Surface Waves Sub-Facility SAR wave database is available through the Australian Ocean Data Network Portal (Delayed-mode data - https://portal.aodn.org.au/search?uuid=4680a155-07af-46ac-b026-151c4ed4f6d5 and NRT - https://portal.aodn.org.au/search?uuid=d833de94-313d-41bd-9278-bc5813e29949), the main repository for marine data in Australia. The data represented by this metadata record is a snapshot of the database at the time of this publication (June 2022), and has been assigned a DOI and will be maintained in perpetuity by the AODN.Maintenance and Update Frequency: notPlannedStatement: The data have also been quality flagged by tagging spectral inversions where one or more of the partitions suffer from 180 degrees of swell directional ambiguity. According to the NetCDF's authors understanding, the source data have been produced by evolving versions of SAR ocean swell spectra inversion algorithm. This is a trial dataset and its cal/val is an area of current active research. For full details of quality assurance and control procedures applied; data generation workflow; format and file naming conventions see the data paper.&rft.creator=Khan, Salman &rft.creator=Hemer, Mark &rft.creator=Echevarria, Emilio &rft.creator=King, Edward &rft.date=2020&rft.coverage=westlimit=-180.00; southlimit=-77.00; eastlimit=180.00; northlimit=64.00&rft.coverage=westlimit=-180.00; southlimit=-77.00; eastlimit=180.00; northlimit=64.00&rft_rights=Data, products and services from IMOS are provided as is without any warranty as to fitness for a particular purpose.&rft_rights=&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=https://licensebuttons.net/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=This is the bibliographic reference for the dataset and this metadata record that describes it: Khan S, Hemer M, Echevarria E, King E. Australian Ocean Surface Waves Dataset from SAR. Australian Ocean Data Network. https://dx.doi.org/10.26198/5e14142d01539 (2020).&rft_rights=Any users of IMOS data are required to clearly acknowledge the source of the material derived from IMOS in the format: Data was sourced from the Integrated Marine Observing System (IMOS) - IMOS is a national collaborative research infrastructure, supported by the Australian Government.&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=SWELLS&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN WAVES&rft_subject=Surface Waves Sub-Facility, Integrated Marine Observing System (IMOS)&rft_subject=Regional Seas | Tasman Sea&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Global / Oceans | Pacific Ocean&rft_subject=Global / Oceans | Indian Ocean&rft_subject=orbiting satellite&rft_subject=Significant height of swell waves on the water body&rft_subject=synthetic aperture radars&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution 4.0 International License
http://creativecommons.org/licenses/by/4.0

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

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License Text

This is the bibliographic reference for the dataset and this metadata record that describes it: Khan S, Hemer M, Echevarria E, King E. Australian Ocean Surface Waves Dataset from SAR. Australian Ocean Data Network. https://dx.doi.org/10.26198/5e14142d01539 (2020).

Any users of IMOS data are required to clearly acknowledge the source of the material derived from IMOS in the format: "Data was sourced from the Integrated Marine Observing System (IMOS) - IMOS is a national collaborative research infrastructure, supported by the Australian Government."

Access:

Open

Brief description

Sentinel-1 A and B satellites are part of Europe’s Copernicus Earth Observation program and carry identical C-band Synthetic Aperture Radar (SAR) instruments. Over open-ocean, they operate in wave mode and collect directional wave measurements globally. This dataset contains Sentinel-1 SAR directional ocean swell wave number spectra, spectral partitions and partition bulks in the Australasian region including the Pacific islands (note - this dataset also contains many along-track observations outside this region, and are included due to overlap with the region of interest), this mission has flown since 2014, with data delivered from July 2015. The data includes both delayed-mode and Near Real Time (NRT) data streams. Systematic surface wave acquisitions from Sentinel-1 began in July, 2015 with only Sentinel-1 A in orbit, and were increased with the addition of Sentinel-1 B, which started regular wave measurements from Oct, 2016. The delayed-mode data processed and delivered from Sentinel-1 platforms cover this time span through to Mar, 2022 and consists of daily netCDF files, while the NRT component of the dataset is producing a 6-hourly netCDF file for each platform (A and B) and includes data that has been acquired in (approximately) the previous 24 hours. The data have been homogenised to a single, easily usable format from inconsistent source product by removing various discrepancies such as inconsistencies in wave number bins and values, variables and erroneous measurements over land. The ongoing IMOS (Integrated Marine Observing System) Surface Waves Sub-Facility SAR wave database is available through the Australian Ocean Data Network Portal (Delayed-mode data - https://portal.aodn.org.au/search?uuid=4680a155-07af-46ac-b026-151c4ed4f6d5 and NRT - https://portal.aodn.org.au/search?uuid=d833de94-313d-41bd-9278-bc5813e29949), the main repository for marine data in Australia. The data represented by this metadata record is a snapshot of the database at the time of this publication (June 2022), and has been assigned a DOI and will be maintained in perpetuity by the AODN.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: The data have also been quality flagged by tagging spectral inversions where one or more of the partitions suffer from 180 degrees of swell directional ambiguity. According to the NetCDF's authors understanding, the source data have been produced by evolving versions of SAR ocean swell spectra inversion algorithm. This is a trial dataset and its cal/val is an area of current active research. For full details of quality assurance and control procedures applied; data generation workflow; format and file naming conventions see the data paper.

Notes

Credit
Integrated Marine Observing System (IMOS). IMOS is a national collaborative research infrastructure, supported by Australian Government.
Credit
Copernicus Australasia regional data hub

Created: 07 01 2020

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180,64 180,-77 0,-77 -180,-77 -180,64 0,64 180,64

0,-6.5

text: westlimit=-180.00; southlimit=-77.00; eastlimit=180.00; northlimit=64.00

Subjects
EARTH SCIENCE | Global / Oceans | Indian Ocean | Global / Oceans | Pacific Ocean | Global / Oceans | Southern Ocean | OCEAN WAVES | OCEANS | Regional Seas | Tasman Sea | Swells | Significant height of swell waves on the water body | Surface Waves Sub-Facility, Integrated Marine Observing System (IMOS) | oceans | orbiting satellite | synthetic aperture radars |

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Other Information
(Website of the IMOS Surface Waves Sub-Facility)

uri : http://imos.org.au/facilities/srs/surface-waves/

(Website of the Copernicus Australasia regional data hub)

uri : http://www.copernicus.gov.au/

(Data paper in Geoscience Data Journal)

doi : https://doi.org/10.1002/gdj3.238

global : c2d47a05-2bb7-4649-ba05-d314e8f2105b

Identifiers
  • global : 63d70f94-d83d-40ad-856b-10f3bd760b3f
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