Macquarie Island Terrain Class Model
A spatially explicit terrain class model (TCM) was produced of the full extent of Macquarie Island to determine areas on Macquarie Island with broadly the same microclimate and ensure that potential microrefugia could be identified. Non-correlated terrain variables likely to affect evapotranspiratio...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/macquarie-island-terrain-class-model/1357177 https://doi.org/10.26179/5bf38bdda2375 https://data.aad.gov.au/metadata/records/AAS_4312_MI_Terrain_Class_Model http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::1357177 2023-05-15T17:09:51+02:00 Macquarie Island Terrain Class Model BERGSTROM, DANA M. (hasPrincipalInvestigator) BERGSTROM, DANA M. (processor) DICKSON, CATHERINE R (hasPrincipalInvestigator) DICKSON, CATHERINE R (processor) WHINAM, JENNIFER (hasPrincipalInvestigator) MCGEOCH, MELODIE A. (hasPrincipalInvestigator) BAKER, DAVID J. (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-54.48121; southlimit=-54.78643; westlimit=158.75244; eastLimit=158.96667; projection=WGS84 Temporal: From 2017-10-01 to 2017-10-31 https://researchdata.ands.org.au/macquarie-island-terrain-class-model/1357177 https://doi.org/10.26179/5bf38bdda2375 https://data.aad.gov.au/metadata/records/AAS_4312_MI_Terrain_Class_Model http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/macquarie-island-terrain-class-model/1357177 9f9fcf7d-1a6f-4012-b2ff-f569af1c8b1a doi:10.26179/5bf38bdda2375 AAS_4312_MI_Terrain_Class_Model https://data.aad.gov.au/metadata/records/AAS_4312_MI_Terrain_Class_Model http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota environment EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ALPINE TUNDRA TOPOGRAPHY EARTH SCIENCE LAND SURFACE ISLANDS BIOSPHERE TERRESTRIAL ECOSYSTEMS TOPOCLIMATE MODEL TOPOCLIMATE MAPPING Computer > Computer MODELS EARTH SCIENCE SERVICES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND dataset ftands https://doi.org/10.26179/5bf38bdda2375 2020-03-23T23:22:08Z A spatially explicit terrain class model (TCM) was produced of the full extent of Macquarie Island to determine areas on Macquarie Island with broadly the same microclimate and ensure that potential microrefugia could be identified. Non-correlated terrain variables likely to affect evapotranspiration rates were included in the model (elevation, surface curvature, topographic wetness index, solar radiation and topographically deflected wind speed). Terrain variables were derived from the Macquarie Island digital elevation model (DEM, Brolsma 2008), see Bricher et al. 2013 for methods. A fuzzy c-means clustering was applied to identify broadly similar climatic conditions and three different metrics (Xie-Beni Index, cluster stability, PCA) determined the optimum number of terrain clusters to be five. See Dickson et al. 2019 and Baker et al. in prep for full methodology. A ‘2nd Membership’ was also produced that only contains cells with at least double that of the second highest cluster centre membership association, which acknowledges that the highest membership ‘hard clustering’ contains some noise from the DEM and cells that may exist on the boundary of two memberships. ArcGIS shapefiles (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .shx) in a zipped file: MI_TCM_2nd_Membership.zip MI_TCM_Highest_Membership.zip More details in the referenced publication. Dataset Macquarie Island Southern Ocean Tundra Research Data Australia (Australian National Data Service - ANDS) Southern Ocean ENVELOPE(158.75244,158.96667,-54.48121,-54.78643) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota environment EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ALPINE TUNDRA TOPOGRAPHY EARTH SCIENCE LAND SURFACE ISLANDS BIOSPHERE TERRESTRIAL ECOSYSTEMS TOPOCLIMATE MODEL TOPOCLIMATE MAPPING Computer > Computer MODELS EARTH SCIENCE SERVICES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND |
spellingShingle |
biota environment EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ALPINE TUNDRA TOPOGRAPHY EARTH SCIENCE LAND SURFACE ISLANDS BIOSPHERE TERRESTRIAL ECOSYSTEMS TOPOCLIMATE MODEL TOPOCLIMATE MAPPING Computer > Computer MODELS EARTH SCIENCE SERVICES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND Macquarie Island Terrain Class Model |
topic_facet |
biota environment EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ALPINE TUNDRA TOPOGRAPHY EARTH SCIENCE LAND SURFACE ISLANDS BIOSPHERE TERRESTRIAL ECOSYSTEMS TOPOCLIMATE MODEL TOPOCLIMATE MAPPING Computer > Computer MODELS EARTH SCIENCE SERVICES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND |
description |
A spatially explicit terrain class model (TCM) was produced of the full extent of Macquarie Island to determine areas on Macquarie Island with broadly the same microclimate and ensure that potential microrefugia could be identified. Non-correlated terrain variables likely to affect evapotranspiration rates were included in the model (elevation, surface curvature, topographic wetness index, solar radiation and topographically deflected wind speed). Terrain variables were derived from the Macquarie Island digital elevation model (DEM, Brolsma 2008), see Bricher et al. 2013 for methods. A fuzzy c-means clustering was applied to identify broadly similar climatic conditions and three different metrics (Xie-Beni Index, cluster stability, PCA) determined the optimum number of terrain clusters to be five. See Dickson et al. 2019 and Baker et al. in prep for full methodology. A ‘2nd Membership’ was also produced that only contains cells with at least double that of the second highest cluster centre membership association, which acknowledges that the highest membership ‘hard clustering’ contains some noise from the DEM and cells that may exist on the boundary of two memberships. ArcGIS shapefiles (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .shx) in a zipped file: MI_TCM_2nd_Membership.zip MI_TCM_Highest_Membership.zip More details in the referenced publication. |
author2 |
BERGSTROM, DANA M. (hasPrincipalInvestigator) BERGSTROM, DANA M. (processor) DICKSON, CATHERINE R (hasPrincipalInvestigator) DICKSON, CATHERINE R (processor) WHINAM, JENNIFER (hasPrincipalInvestigator) MCGEOCH, MELODIE A. (hasPrincipalInvestigator) BAKER, DAVID J. (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Macquarie Island Terrain Class Model |
title_short |
Macquarie Island Terrain Class Model |
title_full |
Macquarie Island Terrain Class Model |
title_fullStr |
Macquarie Island Terrain Class Model |
title_full_unstemmed |
Macquarie Island Terrain Class Model |
title_sort |
macquarie island terrain class model |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/macquarie-island-terrain-class-model/1357177 https://doi.org/10.26179/5bf38bdda2375 https://data.aad.gov.au/metadata/records/AAS_4312_MI_Terrain_Class_Model http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-54.48121; southlimit=-54.78643; westlimit=158.75244; eastLimit=158.96667; projection=WGS84 Temporal: From 2017-10-01 to 2017-10-31 |
long_lat |
ENVELOPE(158.75244,158.96667,-54.48121,-54.78643) |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Macquarie Island Southern Ocean Tundra |
genre_facet |
Macquarie Island Southern Ocean Tundra |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/macquarie-island-terrain-class-model/1357177 9f9fcf7d-1a6f-4012-b2ff-f569af1c8b1a doi:10.26179/5bf38bdda2375 AAS_4312_MI_Terrain_Class_Model https://data.aad.gov.au/metadata/records/AAS_4312_MI_Terrain_Class_Model http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.26179/5bf38bdda2375 |
_version_ |
1766066215365640192 |