Data

Advanced Scatterometer-derived Arctic and Antarctic backscatter anisotropy parameter maps

Australian Antarctic Division
Fraser, A.D. and Cartwright, J. ; FRASER, ALEXANDER D. ; CARTWRIGHT, JESSICA
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=http://data.aad.gov.au/metadata/AAS_4301_ASCAT_backscatter_parameters&rft.title=Advanced Scatterometer-derived Arctic and Antarctic backscatter anisotropy parameter maps&rft.identifier=http://data.aad.gov.au/metadata/AAS_4301_ASCAT_backscatter_parameters&rft.publisher=Australian Antarctic Data Centre&rft.description=Using the EUMETSAT Advanced Scatterometer, a C-band scatterometer in polar orbit currently onboard three platforms, we parameterise anisotropy from the normalised backscattering cross-section of both polar regions. This dataset uses a complex parameterisation of backscatter measurements from one to several days, to parameterise the backscatter into several parameters. These parameters have proven polar parameter retrieval application. For more details on the backscatter parameterisation, see Fraser et al., 2014 (https://ieeexplore.ieee.org/document/6527913). This dataset consists of 5-daily, 2-daily and daily (depending on satellite platform availability) maps of all backscatter parameters spanning the time period from March 2007 to December 2020, with updates planned. Maps are presented as NetCDF files, and are provided in the NSIDC polar stereographic projection (12.5 km resolution, both hemispheres - see https://nsidc.org/data/polar-stereo/ps_grids.html).A data update was provided on 2022-01-17.A further data update of minor corrections was provided on 2024-12-17.Progress Code: completedStatement: Data prior to July 2007 are of lower quality, as detailed in Fraser et al., 2016 (https://www.cambridge.org/core/journals/journal-of-glaciology/article/drivers-of-ascat-c-band-backscatter-variability-in-the-dry-snow-zone-of-antarctica/F0048AF904DDC6F6DC32E42738C95856). These data were previously catalogued under a different DOI (10.26179/5dd60df7469e2), but the data have been updted to improve the quality of the dataset (removing/correcting corrupted data), and to add another year of data.&rft.creator=Fraser, A.D. and Cartwright, J. &rft.creator=FRASER, ALEXANDER D. &rft.creator=CARTWRIGHT, JESSICA &rft.date=2019&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-50&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-50&rft.coverage=westlimit=-180; southlimit=50; eastlimit=180; northlimit=90&rft.coverage=westlimit=-180; southlimit=50; eastlimit=180; northlimit=90&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4301_ASCAT_backscatter_parameters when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > FIRN&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE ROUGHNESS&rft_subject=ASCAT > Advanced Scatterometer&rft_subject=METOP-A > Meteorological Operational Satellite - A&rft_subject=METOP-B > Meteorological Operational Satellite - B&rft_subject=METOP-C&rft_subject=AMD&rft_subject=CEOS&rft_subject=ACE/CRC&rft_subject=AMD/AU&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=GEOGRAPHIC REGION > ARCTIC&rft_subject=OCEAN > ARCTIC OCEAN&rft.type=dataset&rft.language=English Access the data
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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4301_ASCAT_backscatter_parameters when using these data.

This metadata record is publicly available.

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Full description

Using the EUMETSAT Advanced Scatterometer, a C-band scatterometer in polar orbit currently onboard three platforms, we parameterise anisotropy from the normalised backscattering cross-section of both polar regions. This dataset uses a complex parameterisation of backscatter measurements from one to several days, to parameterise the backscatter into several parameters. These parameters have proven polar parameter retrieval application. For more details on the backscatter parameterisation, see Fraser et al., 2014 (https://ieeexplore.ieee.org/document/6527913).
This dataset consists of 5-daily, 2-daily and daily (depending on satellite platform availability) maps of all backscatter parameters spanning the time period from March 2007 to December 2020, with updates planned. Maps are presented as NetCDF files, and are provided in the NSIDC polar stereographic projection (12.5 km resolution, both hemispheres - see https://nsidc.org/data/polar-stereo/ps_grids.html).

A data update was provided on 2022-01-17.
A further data update of minor corrections was provided on 2024-12-17.

Lineage

Progress Code: completed
Statement: Data prior to July 2007 are of lower quality, as detailed in Fraser et al., 2016 (https://www.cambridge.org/core/journals/journal-of-glaciology/article/drivers-of-ascat-c-band-backscatter-variability-in-the-dry-snow-zone-of-antarctica/F0048AF904DDC6F6DC32E42738C95856). These data were previously catalogued under a different DOI (10.26179/5dd60df7469e2), but the data have been updted to improve the quality of the dataset (removing/correcting corrupted data), and to add another year of data.

Notes

Purpose
A wide range of polar applications including retrieval of sea ice roughness and moisture content, melt detection, snow grain size, and ice sheet surface mass balance.

Data time period: 2007-03-01 to 2020-12-31

This dataset is part of a larger collection

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180,-50 180,-86 0,-86 -180,-86 -180,-50 0,-50 180,-50

0,-70

180,86 180,50 0,50 -180,50 -180,86 0,86 180,86

0,70

text: westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-50

text: westlimit=-180; southlimit=50; eastlimit=180; northlimit=90

Subjects
ACE/CRC | AMD | AMD/AU | ASCAT > Advanced Scatterometer | CEOS | CONTINENT > ANTARCTICA | EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE ROUGHNESS | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > FIRN | GEOGRAPHIC REGION > ARCTIC | GEOGRAPHIC REGION > POLAR | METOP-A > Meteorological Operational Satellite - A | METOP-B > Meteorological Operational Satellite - B | METOP-C | OCEAN > ARCTIC OCEAN | OCEAN > SOUTHERN OCEAN | climatologyMeteorologyAtmosphere |

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Other Information
Download the dataset. (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/6019/download

Public information for AAS project AAS_4301 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=AAS_4301

Public information for AAS project 4301 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=4301

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

uri : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4301_ASCAT_backscatter_parameters

Identifiers
  • global : AAS_4301_ASCAT_backscatter_parameters