An analysis of tropical cyclone occurrence in the Southern Hemisphere derived from a new satellite-era data set
Abstract:Satellite remote sensing is vital to accurately estimate tropical cyclone (TC) parameters such as position and intensity. A TC archive for the Southern Hemisphere (SH) has been prepared for the ‘satellite era’, and it now consists of best track data, covering name (and/or unique identification number), position and intensity (in terms of central pressure). Based on these best track data, TC climatologies for the South Indian Ocean (SIO) and South Pacific Ocean (SPO) are investigated. Variability in TC activity is examined depending on different phases of the El Niño-Southern Oscillation (ENSO). The outcomes demonstrate prospects for improving the regional seasonal prediction of TC activity. The growth in the availability of satellite data is found to have a significant influence on the quantity and quality of available TC data, particularly in relation to the intensity of TCs. To provide a means of accessing detailed information and data on historical TCs in the SH, a specialized website for disseminating results and data was developed using the OpenLayers platform. This allows dynamic map navigation of detailed information for user-selected regions.
Document Type: Research Article
Affiliations: Bureau of Meteorology,National Climate Centre, Melbourne,VIC,3001, Australia
Publication date: 2012-12-10