Seasonal distributions of daily heavy rain events over Australia

Abstract

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A Radar Object-Based Examination of Rain System Climatology and Including Climate Variability

“…Using these datasets over Australia, some researchers have found that severe thunderstorms are most prevalent between October and April (Niall and Walsh 2005;Schuster et al 2005;Davis and Walsh 2008) with a peak between 3 and 7 pm (Griffiths et al 1993;Schuster et al 2005), consistent with the findings of Allen and Karoly (2014) using environmental approach and ERA-Interim reanalysis data. Higher frequency of heavy rain events over Australia in summer was also reported by Dare and Davidson (2015), 71 using a high resolution gridded daily rain gauge data. Some efforts have also been made to 72 employ these types of data to investigate relationships between ENSO and storm events, globally 73 (Cook and Schaefer 2008;Cook et al 2017;Lee et al 2016Lee et al , 2013Lepore et al 2017) and over 74…”

“…The study area in this research is the radar coverage regions located up to 150 km from the Wollongong radar, which includes coastal regions of Greater Sydney and Illawarra in New South Wales. The climate of these regions is categorized as humid subtropical, or Cfa based on the Köppen-Geiger classification (Kottek et al 2006), and is significantly affected by the coastal position, with small interseasonal variations ranging from cool winters to warm and hot summers (Bureau of Meteorology 2016; Dare and Davidson 2015). The mean annual precipitation recorded at Observatory Hill (in Greater Sydney) and Wollongong University (in Illawarra) locations are 1213.4 mm and 1348.6 mm, respectively (Bureau of Meteorology 2013).…”

An Object-based Climatology of Precipitation Systems in Sydney, Australia

“…Using these datasets over Australia, some researchers have found that severe thunderstorms are most prevalent between October and April (Niall and Walsh 2005;Schuster et al 2005;Davis and Walsh 2008) with a peak between 3 and 7 pm (Griffiths et al 1993;Schuster et al 2005), consistent with the findings of Allen and Karoly (2014) using environmental approach and ERA-Interim reanalysis data. Higher frequency of heavy rain events over Australia in summer was also reported by Dare and Davidson (2015), using a high resolution gridded daily rain gauge data. Some efforts have also been made to employ point-based datasets to investigate relationships between ENSO and storm events, globally (Cook and Schaefer 2008;Cook et al 2017;Lee et al 2016Lee et al , 2013Lepore et al 2017) and over Australia (Chung and Power 2017;Risbey et al 2009a,b;Murphy and Timbal 2008;Nicholls et al 1996;McBride and Nicholls 1983;Allan et al 1996;Schepen et al 2012;Min et al 2013;King et al 2014;Ashcroft et al 2019).…”

An object-based climatology of precipitation systems in Sydney, Australia

“…Using reported datasets over Australia, some researchers have found that severe thunderstorms are most prevalent between October and April (Niall and Walsh 2005;Schuster et al 2005;Davis and Walsh 2008) with a peak between 3 and 7 pm (Griffiths et al 1993;Schuster et al 2005), consistent with the findings of Allen and Karoly (2014) using environmental approach and ERA-Interim reanalysis data. Higher frequency of heavy rain events over Australia in summer was also reported by Dare and Davidson (2015), using daily rain gauge data. Some efforts have also been made to employ point-based datasets to investigate relationships between ENSO and storm events, globally (Cook and Schaefer 2008;Cook et al 2017;Lee et al 2016Lee et al , 2013Lepore et al 2017) and over Australia (Chung and Power 2017;Risbey et al 2009a, b;Murphy and Timbal 2008;Nicholls et al 1996;McBride and Nicholls 1983;Allan et al 1996;Schepen et al 2012;Min et al 2013;King et al 2014;Ashcroft et al 2019).…”