Cyclones that form or intensify rapidly off Australia's east coast, known as East Coast Lows (ECLs), are
one of the main causes of freshwater flooding and severe weather along the eastern seaboard. The
presence of the warm East Australian Current (EAC) is widely thought to play an important role in the
frequency, seasonality, and impacts of ECLs. However, the nature and strength of this relationship
remains poorly understood.
To quantify this relationship, an ensemble of regional climate model simulations were performed over
Australia using the Weather Research and Forecasting model, with 10 km resolution in the Tasman
Sea and over the adjacent mainland. Several sets of simulations were performed for the period 2007-
2008, which includes a number of major ECLs of different synoptic subtypes, using sea surface
temperature datasets of different spatial resolutions, as well as fields where the EAC was completely
removed. This enables a detailed assessment of the influence of sea surface temperatures on the
frequency and characteristics of ECLs and coastal severe weather.
This page is maintaind by Jason Evans |
Last updated 31st January 2013