Open ocean corridors for swell waves to reach Antarctic ice shelves - 2020-2021 data

The AA4528 corridor dataset contains the Matlab scripts for the corridor algorithm, ice shelf locations and file extensions. The corridor algorithm is designed to calculate the parts of the ocean which can directly propagate swell into an exposed ice shelf. The algorithm achieves this as an expansion of the coastal exposure algorithm (Reid and Massom, 2021), with the details of the inner working of the algorithm work presented in the paper attached with this dataset. Corridors can be used to calculate the frequency of swell reaching an ice shelf per year and can be combined with hindcasts to extract relevant wave data to an ice shelf for modelling or data analysis purposes.


The corridor algorithm requires sea ice concentration data, which was provided by the NSIDC Sea ice concentrations from the Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 ( https://nsidc.org/data/nsidc-0051). Ice shelf coordinates were extracted from the gfsc_25s.msk that come with the sea ice data, with the aid of Antarctic Mapping Toolbox (Greene et al., 2017), and were attached separately to make editing more consistent. As this is designed to use daily sea ice data from the 1st of January 1979 onwards, I’ve also attached the sea ice files for the off-days when the sea-ice data was taken every 2nd day. Th file extensions script was also included to be able to switch through off-day files and changes that occur with the NSIDC file format.


The ocean hindcast that the corridor algorithm was built around is the CAWCR Wave Hindcast – Aggregated Collection ( https://data.csiro.au/collections/collection/CI39819v005). The corridor algorithm uses daily data to make it consistent with the sea ice data and calculated the maximum significant wave height for each cell present in the hindcast. Data that was extracted from it was the maximum daily significant wave height recorded in the corridor and the direction of that cell. Data was taken from 01/09/1979 to 31/08/2019 giving 40 years of data which accounts for seasonality of corridors.


The excel spreadsheet attached contains relevant corridor data for each ice shelf with an area greater than 500 km^2. Area was determined by either the supplementary files from Rignot et. al., 2013, or ice shelf areas from the Antarctic mapping toolbox (Greene et al., 2017). Angle1 and Angle2 were the ones used in the direction filter, and there should be a comment in the filter with how it handles if Angle 1 is greater than Angle 2 or vice versa. Ac is the corridor area, PA is potential corridor area (i.e. the absolute max it could be with the settings we used, Ac_max is the maximum corridor area, D_cor is the days that corridors were present, Hs is significant wave height and LW (large waves) is counting days per year when significant wave heights greater than or equal to 6 m (Morim et al., 2021).


Refs:

Greene, C. A., Gwyther, D. E. and Blankenship, D. D. (2017) ‘Antarctic Mapping Tools for MATLAB’, Computers and Geosciences, 104, pp. 151–157. doi: 10.1016/j.cageo.2016.08.003.

Morim, J. et al. (2021) ‘Global-scale changes to extreme ocean wave events due to anthropogenic warming’, Environmental Research Letters, 16(7), p. 074056. doi: 10.1088/1748-9326/ac1013.

Reid, P. and Massom, R. (2021) ‘Change and Variability in Antarctic Coastal Exposure , 1979-2020’. In pre-print ( https://assets.researchsquare.com/files/rs-636839/v1/02002d0b-2c6c-402b-8e14-7f77075d8f90.pdf?c=1631885736)

Rignot, E. et al. (2013) ‘Ice-shelf melting around antarctica’, Science, 341(6143), pp. 266–270. doi: 10.1126/science.1235798.

Simple

Identification info

Alternate title
Open ocean corridors for swell waves to reach Antarctic ice shelves - 2020-2021 data
Date (Publication)
2022-03-25
Edition
2
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.26179/jk2f-bv91

Originator

Bennetts, L., Massom, R., Reid, P. and Teder, N.

Publisher

Australian Antarctic Data Centre

Principal investigator

BENNETTS, LUKE
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5005
Australia

Principal investigator

REID, PHIL
Bureau of Meteorology
Hobart
Tasmania
7001
Australia

Principal investigator

TEDER, NATHAN
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5021
Australia

Collaborator

MASSOM, ROB
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Collaborator

REID, PHIL
Bureau of Meteorology
Hobart
Tasmania
7001
Australia

Collaborator

TEDER, NATHAN
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5021
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/AAS_4528_CORRIDOR

Purpose
To provide the means to recreate the corridor algorithm, as well as providing individual shelf data from the corridor algorithm to show the rate of formation, and the likelihood high wave events reach the shelf.
Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Temporal resolution
P1D
Topic category
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1979-09-01 2019-08-31
Title
Antarctic Mapping Tools for MATLAB
Date (Publication)
2017
Citation identifier
104

Citation identifier
doi:10.1016/j.cageo.2016.08.003

Author

Greene, C. A., Gwyther, D. E. and Blankenship, D. D.
Name
Computers and Geosciences
Page
151–157
Title
Global-scale changes to extreme ocean wave events due to anthropogenic warming
Date (Publication)
2021
Citation identifier
16

Citation identifier
doi:10.1088/1748-9326/ac1013

Author

Morim, J. et al.
Name
Environmental Research Letters
Issue identification
7
Page
074056
Title
Change and Variability in Antarctic Coastal Exposure , 1979-2020
Date (Publication)
2021

Author

Reid, P. and Massom, R.
Title
Ice-shelf melting around antarctica
Date (Publication)
2013
Citation identifier
341

Citation identifier
doi:10.1126/science.1235798.

Author

Rignot, E. et al.
Name
Science
Issue identification
6143
Page
266–270
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > CRYOSPHERE > SEA ICE
  • EARTH SCIENCE > OCEANS > SEA ICE
  • EARTH SCIENCE > OCEANS > OCEAN WAVES > SWELLS
  • EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT
Keywords
  • CORRIDORS
  • ICE-OCEAN INTERACTIONS
NASA/GCMD Earth Science Keywords
  • Computer > Computer
NASA/GCMD Earth Science Keywords
  • MODELS
NASA/GCMD Earth Science Keywords
  • AMD
  • AMD/AU
  • CEOS
NASA/GCMD Earth Science Keywords
  • CONTINENT > ANTARCTICA
  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

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

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
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_4528_CORRIDOR when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2022-03-25T00:00:00
Units of distribution
MB
Transfer size
470
Distribution format
  • matlab, excel

OnLine resource
GET DATA > DIRECT DOWNLOAD

Download the dataset.

OnLine resource
PROJECT HOME PAGE

Public information for AAS project AAS_4528

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset.

Maintenance and update frequency
As needed
Maintenance note
2021-10-28 - record created by Nathan Teder. 2022-02-17 - record updated by Dave Connell after an updated dataset was provided by Nathan Teder. 2022-03-25 - record updated by Dave Connell after a slightly modified dataset was provided by Nathan Teder, and the data were publicly released.

Metadata

Metadata identifier
string/AAS_4528_CORRIDOR

Language
English
Character encoding
UTF8

Author

TEDER, NATHAN
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5021
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
a333806e-7785-4c1e-b347-f28fecdbcab4

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2022-03-25T16:12:50

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/AAS_4528_CORRIDOR

Point of truth for the metadata record

Date info (Creation)
2021-10-28T00:00:00
Date info (Last Update)
2022-03-25

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

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