Data

IMOS - Satellite Remote Sensing - Surface Waves Sub-Facility - Gridded SAR wind - Delayed mode data

Integrated Marine Observing System
Integrated Marine Observing System (IMOS)
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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The winds are derived using a consistent geophysical model function (gmf), CMOD5N, and variational Bayesian inversion approach as proposed in Portabella et al. (2002) and Sentinel-1 Ocean wind (owi) algorithm definition document. The input SAR and model (ECMWF) data used in the inversion are sourced from owi Level-2 product, and the resulting derived winds are approximately at 1km horizontal spatial resolution as in the source product. Wind speeds are also calibrated against Metop-A and B scatterometer wind database of Ribal and Young, 2020 (JTECH). For each day, all available derived wind field swaths (available as separate wind product: IMOS - Satellite Remote Sensing - Surface Waves Sub-Facility - SAR wind - Delayed mode data) are combined and interpolated to a nominal 0.01 x 0.01-degree regular grid. The final data are thus arranged in a rectilinear grid with dimensions defined by TIME, LATITUDE and LONGITUDE.The data represented by this record, are presented in delayed mode.Maintenance and Update Frequency: continualStatement: Refer to data descriptor paper (https://doi.org/10.1038/s41597-023-02046-w) The data also include wind speed quality control flags labelling data as good, probably good, or bad. 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If relevant, also credit other organisations involved in collection of this particular datastream (as listed in 'credit' in the metadata record).&rft_rights=Data, products and services from IMOS are provided as is without any warranty as to fitness for a particular purpose.&rft_subject=oceans&rft_subject=SURFACE WINDS&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN WINDS&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Global / Oceans | Indian Ocean&rft_subject=Regional Seas | Tasman Sea&rft_subject=Regional Seas | Coral Sea&rft_subject=Marine Features (Australia) | Great Australian Bight, SA/WA&rft_subject=Regional Seas | Arafura Sea&rft_subject=Regional Seas | Solomon Sea&rft_subject=Regional Seas | Banda Sea&rft_subject=Regional Seas | Celebes Sea&rft_subject=Regional Seas | South China Sea&rft_subject=Regional Seas | Gulf of Thailand&rft_subject=Regional Seas | Andaman Sea&rft_subject=Global / Oceans | Pacific Ocean&rft_subject=Regional Seas | Philippine Sea&rft_subject=Sentinel-1B&rft_subject=Sentinel-1A&rft_subject=Wind speed in the atmosphere&rft_subject=Wind to direction in the atmosphere&rft_subject=synthetic aperture radars&rft_subject=Surface Waves Sub-Facility, Integrated Marine Observing System (IMOS)&rft.type=dataset&rft.language=English Access the data
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Licence & Rights:

Open Licence view details
CC-BY

Creative Commons Attribution 4.0 International License
http://creativecommons.org/licenses/by/4.0/

The citation in a list of references is: "IMOS [year-of-data-download], [Title], [data-access-URL], accessed [date-of-access]."

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 Australia's Integrated Marine Observing System (IMOS) - IMOS is enabled by the National Collaborative Research Infrastructure strategy (NCRIS)." If relevant, also credit other organisations involved in collection of this particular datastream (as listed in 'credit' in the metadata record).

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

Access:

Open

Full description

Sentinel-1 A, B and C satellites are part of Europe's Copernicus Earth Observation program and carry identical C-band Synthetic Aperture Radar (SAR) instruments. This dataset contains regularly gridded (0.01 x 0.01 deg) daily 10m neutral stability wind speed and direction derived from Sentinel-1 SARs in the wider Australian nearshore regions. In these regions, the satellites normally operate in interferometric wide (IW) swath mode. The winds are derived using a consistent geophysical model function (gmf), CMOD5N, and variational Bayesian inversion approach as proposed in Portabella et al. (2002) and Sentinel-1 Ocean wind (owi) algorithm definition document. The input SAR and model (ECMWF) data used in the inversion are sourced from owi Level-2 product, and the resulting derived winds are approximately at 1km horizontal spatial resolution as in the source product. Wind speeds are also calibrated against Metop-A and B scatterometer wind database of Ribal and Young, 2020 (JTECH).

For each day, all available derived wind field swaths (available as separate wind product: IMOS - Satellite Remote Sensing - Surface Waves Sub-Facility - SAR wind - Delayed mode data) are combined and interpolated to a nominal 0.01 x 0.01-degree regular grid. The final data are thus arranged in a rectilinear grid with dimensions defined by TIME, LATITUDE and LONGITUDE.

The data represented by this record, are presented in delayed mode.

Lineage

Maintenance and Update Frequency: continual
Statement: Refer to data descriptor paper (https://doi.org/10.1038/s41597-023-02046-w) The data also include wind speed quality control flags labelling data as good, probably good, or bad. Users are encouraged to use both good and probably good data in their analyses.

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.

Created: 23 08 2023

Data time period: 2017-10-24

This dataset is part of a larger collection

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139,8 139,7 137,7 137,12 140,12 140,8 139,8

138.5,9.5

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Subjects
EARTH SCIENCE | Global / Oceans | Indian Ocean | Global / Oceans | Pacific Ocean | Global / Oceans | Southern Ocean | Marine Features (Australia) | Great Australian Bight, SA/WA | OCEAN WINDS | OCEANS | Regional Seas | Andaman Sea | Regional Seas | Arafura Sea | Regional Seas | Banda Sea | Regional Seas | Celebes Sea | Regional Seas | Coral Sea | Regional Seas | Gulf of Thailand | Regional Seas | Philippine Sea | Regional Seas | Solomon Sea | Regional Seas | South China Sea | Regional Seas | Tasman Sea | Surface Winds | Sentinel-1A | Sentinel-1B | Surface Waves Sub-Facility, Integrated Marine Observing System (IMOS) | Wind speed in the atmosphere | Wind to direction in the atmosphere | oceans | synthetic aperture radars |

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

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

(Link to Ribal and Young, 2020 (JTECH))

doi : https://doi.org/10.1175/JTECH-D-19-0119.1

(Link to Khan et al., 2023 (Data Descriptor Paper))

doi : https://doi.org/10.1038/s41597-023-02046-w

(NetCDF files via THREDDS catalog)

url : https://thredds.aodn.org.au/thredds/catalog/IMOS/SRS/Surface-Waves/SAR_Wind/DELAYED/GRIDDED/catalog.html

(Files via Amazon Web Services S3 storage)

url : https://data.aodn.org.au/?prefix=IMOS/SRS/Surface-Waves/SAR_Wind/DELAYED/GRIDDED/

(View and download data though the AODN Portal)

url : https://portal.aodn.org.au/search?uuid=f8cefb80-44a8-4187-8005-7e34d6ef5d6f

(Access to Jupyter notebook)

url : https://github.com/aodn/imos-user-code-library/blob/master/Python/notebooks/SAR_winds/SAR_winds_getting_started_jupyter_notebook/ausar_gridded_dm_winds_getting_started_notebook.ipynb

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

Identifiers
  • global : f8cefb80-44a8-4187-8005-7e34d6ef5d6f