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Rockhampton future climate (2055) 1000 year average recurrence interval wind hazard

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.


Dataset citation

ANZLIC unique identifier: ANZCW0703017010

Title: Rockhampton future climate (2055) 1000 year average recurrence interval wind hazard


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

Abstract:

This use of this data should be carried out with the knowledge of the contained metadata and with reference to the associated report provided by Geoscience Australia with this data (Reforming Planning Processes Trial: Rockhampton 2050). A copy of this report is available from the the Geoscience Australia website (http://www.ga.gov.au/sales) or the Geoscience Australia sales office (sales@ga.gov.au, 1800 800 173). The wind hazard outputs are a series of rasters, one for each average recurrence interval considered, presenting peak wind hazard (peak from all directions) as measure in km/h. This file presents the future climate wind hazard. The file name indicates the hazard being presented, e.g. wspd_rp_1000_max.tif is the 1000 year Return Period (RP - equivalent to Average Reccurrence Interval (ARI)) and is the maximum wind speed from all directions. The local wind multipliers adjust the 3-second gust regional RP wind speed from 10 m above ground level to ground level with the consideration of topography and shielding effects. Eight cardinal directions are calculated for every raster cell and the maximum of these values is then derived and presented here.

ANZLIC search words:

  • HAZARDS Cyclones Mapping

Spatial domain:

locality map

Geographic extent name: FITZROY (S) - QLD-FITZROY (S) - Local Government Areas (LGA) - Queensland

Geographic extent polygon: 149.9427 -22.9405, 150.9882 -22.9405, 150.9882 -23.8424, 149.9427 -23.8424, 149.9427 -22.9405,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:
North bounding latitude: -22.9405 °
South bounding latitude: -23.8424 °
East bounding longitude: 150.9882 °
West bounding longitude: 149.9427 °

Data currency

Beginning date: Not Known

Ending date: Not Known


Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - tif Tagged Image File Format (TIFF) - including GeoTIFF
Available format type:
DIGITAL - tif Tagged Image File Format (TIFF) - including GeoTIFF

Access constraints:

? Commonwealth of Australia (Geoscience Australia) 2013

With the exception of the Commonwealth Coat of Arms and where otherwise noted, all material

in this publication is provided under a Creative Commons Attribution 3.0 Australia Licence (http://www.creativecommons.org/licenses/by/3.0/au/)

Geoscience Australia has tried to make the information in this product as accurate as possible. However, it does not guarantee that the information is totally accurate or complete. Therefore, you should not solely rely on this information when making a commercial decision.

Free Data Download

Data quality

Lineage:

Below is an extract from the technical report. See the report for figures, tables and the reference list.

There were four steps in modelling future climate TC hazard:

? Extract TC Like Vortices (TCLVs ) from high-resolution regional climate simulations for 1981 2000, 2046-2065 and 2081-2100

? Use each TCLV dataset as input to the TCRM to evaluate TC wind hazard for that time period

? Compare resulting TC wind hazard estimates, identifying areas where the change is significant

? Apply relative change in hazard from TCLVs to the observed current climate (historical) hazard.

5000 years were simulated of TC activity based on the input TCLV dataset for each twenty year time period (1981-2000, 2046-2065 and 2081-2100), and then the associated ARI wind fields calculated for each of those simulated years. For each time period the TC severe wind hazard (quantified in ARI wind speeds) and the 90th percentile range of the hazard is evaluated.

The 90th percentile range is calculated by fitting an extreme value distribution to a subset of the simulated wind fields many times and calculating the 95th and 5th percentiles of the resulting wind speed values at each ARI. This gives an indication of the possible range of hazard levels arising from a short input dataset. For example, between any two 20-year periods there will be differences in the frequency of TC events. The resulting hazard levels from the two 20-year periods will be different. This process to calculate the 90th percentile range aims to capture the potential variability.

Data sources

Historical TC tracks were from the Bureau of Meteorology?s southern hemisphere best track dataset for the southern hemisphere, from 1981 to 2010 . This represents a quality controlled, homogenised set of TC observations, independently constructed from all available TC warning centres across the world.

Future climate TCLV data was obtained as part of the Regional Tropical Cyclone Hazard for Infrastructure Adaptation to Climate Change CSIRO Climate Adaptation Flagship (Lavender et al.,, 2011). These data represent TCLVs extracted from a 15 km horizontal resolution regional climate model (CCAM ? McGregor and Dix, 2008) for a number of time periods, where the GCM used for external forcing is the CSIRO Mark 3.5 model forced with the SRES A2 GHG emission scenario (Nakicenovic and Swart, 2000).

Positional accuracy:

The vegetation and elevation datasets spatially matched the other datasets such as the aerial photography (2010 capture) and the coastline etc

Attribute accuracy:

Values conform to expected values such as higher values on slopes and lesser values over flat elevations and the built-up area around Rockhampton.

Logical Consistency:

Not applicable.

Completeness:

Complete for the study region.


Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address: sales@ga.gov.au

Metadata information

Metadata date: 2013-05-28


Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703017010.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703017010.xml

(wspd_2055_rp_1000_max.tif)

Authors:Arthur, C. Yang, T. Moore, D.
SPATIAL INFORMATION FOR THE NATION