Influence of Greenhouse Warming on Tropical Cyclone Frequency

• DOI: 10.2151/jmsj.84.405
• Publication Date: 2006-05-19T05:50:04Z
• Authors: Jun YOSHIMURA; Masato SUGI; Akira NODA
• Keywords: 13. Climate action; 01 natural sciences; 0105 earth and related environmental sciences

Influences of sea surface temperature (SST) spatial patterns and cumulus parameterizations on tropical cyclone (TC) frequency, in the context of global warming impacts, are investigated using an atmospheric general circulation model at T106 horizontal resolution. Simulated TCs in this high-resolution model are categorized into tropical storms (TSs) and tropical depressions (TDs). Model TSs are defined as TCs with maximum surface wind speed more than, or equal to 16 m s � 1 , for experiments with an Arakawa-Schubert cumulus parameterization. Another threshold of 14 m s � 1 is used for those with a Kuo cumulus parameterization. Model TDs are defined as weaker TCs. Although the maximum wind speed, and the minimum central pressures of intense TCs are not realistically simulated in the model, geographical patterns of TS formation seem to be realistically simulated, with climatological and El