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Australian Region Cyclone Intensity and Frequency Index - CAMRIS

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About this Collection

Australian Region Cyclone Intensity and Frequency Index - CAMRIS


This database presents an index of the intensity, frequency and density of cyclone occurrence in the Australian region. It has been derived from data held in CSIRO CAMRIS database and originally collected by the Bureau of Meteorology from 1958 - 1990. The cyclone_density code in the coverage represents: 1 Australia, 2-23 the nominal index of cycl... more


Environmental Sciences not elsewhere classified Geospatial Information Systems Physical Oceanography


https://doi.org/10.4225/08/55148491CB988


01 Jan 1995


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CAMRIS Coastal and Marine Resources Information System cyclone coast coastal Australia


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Environmental Resources Information Network (ERIN)

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Original metadata record (Department of Environment)


cyclone_thumbnail.png


The database shows an index of cyclone intensity and frequency from 1958-1990. The map was created from raw data provided by the Bureau of Meterology: 1. Data points represented each 6 hourly location of every cyclone. 2. Modelled the density of points to create a contour map by counting points which fell within a certain radius of each point. Weighted by distance as 1 to all points within 25 km of a cyclone eye, and a linearly decaying weight (with distance) of between 1 and 0 to all points between 25 and 50km away. This assumed that cyclones significantly affect areas less than 25km from the eye, and have a decreasing effect with distance away from the eye. 3. Values on the contour map were multiplied by an index derived from intensity (barometric depression) at cyclone eye. 4. Reclassed intensity - density distribution using a linear scale. CAMRIS data were stored in VAX files, MS-DOS R-base files and as a microcomputer dataset accessible under the LUPIS (Land Use Planning Information System) land allocation package. A summary follows of data processing by the CSIRO: 1. r-BASE: Information imported into r-BASE from a number of different sources. 2. BASE Table was generated incorporating specific fields. 3. SPANS environment: creating a geographic projection - Equidistant Conic (Simple Conic) and Lambert Conformal Conic, Spheroid: International Astronomical Union 1965 (Australia/Sth America). 4. BASE Table imported into SPANS and a BASE Map generated. 5. Categorise Maps - selecting out specified fields, a desired window size (ie continental or continent and oceans) and resolution level (ie the quad tree level). 6. Rasterise maps specifying key parameters. 7. Gifs produced using categorised maps with a title, legend, scale and long/lat grid, and supplied to ERIN. 9. The reference coastline for CAMRIS was the mean high water mark (AUSLIG 1:100 000 topographic map series).


The metadata for this data collection was obtained from the Australian Government Department of the Environment (http://www.environment.gov.au)


Creative Commons Attribution 3.0 Unported Licence


CSIRO (Australia)


CSIRO (2015): Australian Region Cyclone Intensity and Frequency Index - CAMRIS. v1. CSIRO. Data Collection. https://doi.org/10.4225/08/55148491CB988


All Rights (including copyright) CSIRO Australia 2015.


The metadata and files (if any) are available to the public.

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Location Details

4°19′5.5848″ S


55°58′49.44″ S


170°27′20.4768″ E


99°41′57.0228″ E


GDA94


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Oceans


About this Project

Legacy


CAMRIS


CAMRIS, standing for the Coastal and Marine Resources Information System, is a small-scale spatial analysis system developed in collaboration by several divisions of Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO), as part of the CSIRO Coastal Zone Program. CSIRO Division of Wildlife and Ecology was the custodian of... more


Modelling


CSIRO


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