The contribution of tropical cyclones to rainfall in northwest Australia

Ng, Benjamin and Walsh, Kevin and Lavender, Sally ORCID: (2015) The contribution of tropical cyclones to rainfall in northwest Australia. International Journal of Climatology, 35 (10). pp. 2689-2697. ISSN 0899-8418


Northwest Australian rain gauge data is analysed to obtain new estimates of the fraction of rainfall caused by tropical cyclones (TCs), in one of the regions of the globe where this fraction is greatest. For annual rainfall, at some coastal stations more than 40% of rainfall arises from TCs. There is substantial seasonal variation in this fraction, with largest fractions occurring in the October through December period, where some stations have more than 70% of rainfall from TCs. There is a sharp gradient in this percentage away from the coastline, with inland values typically less than 30%. With the exception of a narrow coastal region in the tropics, changes in TC rainfall cannot explain recent rainfall trends in this region, with only a small number of locations exhibiting agreement between trends in total rainfall and trends in TC rainfall. © 2014 Royal Meteorological Society.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 15 May 2019 06:20
Last Modified: 30 May 2019 02:16
Uncontrolled Keywords: Australia; rainfall; tropical cyclone; gauges; hurricanes; precipitation (meteorology); storms; tropics; annual rainfall; coastal regions; coastal station; rain gauge data; rainfall trends; seasonal variation; rain; raingauge
Fields of Research (2008): 04 Earth Sciences > 0401 Atmospheric Sciences > 040105 Climatology (excl.Climate Change Processes)
Fields of Research (2020): 37 EARTH SCIENCES > 3702 Climate change science > 370202 Climatology
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