Journal article
Microphysical mechanisms of wintertime postfrontal precipitation enhancement over the Australian Snowy Mountains
Artur Gevorgyan, Steven Siems, Yi Huang, Luis Ackermann, Michael Manton
Quarterly Journal of the Royal Meteorological Society | Wiley | Published : 2024
DOI: 10.1002/qj.4646
Abstract
A heavy orographic precipitation event associated with the postfrontal sector of a midlatitude cyclone over the Australian Snowy Mountains (ASM) was analyzed using field observations and numerical simulations. This event, observed during a 2018 intensive field campaign, was of particular interest as three distinct precipitation episodes were identified within a prolonged postfrontal period. Deep mixed-phase clouds (MPCs) characterized by cold cloud-top temperatures (colder than −30°C) and the presence of updrafts extending 3.5–4.5 km above the boundary-layer height, produced the three enhanced precipitation events over the windward slopes of the ASM. The presence of conditional instabilities..
View full abstractRelated Projects (2)
Grants
Awarded by National Computational Infrastructure
Funding Acknowledgements
We thank the anonymous reviewers for their valuable comments and suggestions that significantly improved this manuscript. The research is funded by the Australian Research Council (ARC) Linkage Grant LP160101494. The simulations were undertaken on the NCI national computing facility in Australia. We would also like to thank Snowy Hydro Limited for providing the pluviometer data over the Snowy Mountains and their participation in the field campaign. We are thankful to Dr Greg Thompson and Dr Hugh Morrison for their valuable suggestions and help related to microphysical tasks. Open access publishing facilitated by Monash University, as part of the Wiley - Monash University agreement via the Council of Australian University Librarians.