Assessing Water Supply Security in a Nonstationary Environment

The impact of climate change on dam overtopping floods in Australia

M Ho, D O'Shea, C Wasko, R Nathan, A Sharma

2025-11-03

There is unequivocal evidence that climate change will change the risk profile of dams, which are critical pieces of infrastructur..

The contribution of floods to streamflow at yearly timescales: A global assessment

C Dykman, A Sharma, R Nathan, C Wasko

2025-08-01

Much of the world's population faces significant threats to water security that are likely to be exacerbated under a warmer climat..

Evaluation of key flood risk drivers under climate change using a bottom-up approach

D O'Shea, R Nathan, C Wasko, M Ho, A Sharma

2024-08-01

Our understanding of the key drivers of change in flood risk due to climate change remains incomplete. Here, to understand and qua..

Pyraingen: A python package for constrained continuous rainfall generation

C Dykman, A Sharma, C Wasko, R Nathan

2024-04-01

Continuous rainfall is often required for flood estimation and water resources assessment. However, stochastically generated conti..

Changes in flood-associated rainfall losses under climate change

M Ho, C Wasko, D O'Shea, R Nathan, E Vogel, A Sharma

2023-10-01

Climate change is expected to impact the severity and frequency of floods, which has implications for flood risk management. Desig..

Changing Storm Temporal Patterns with Increasing Temperatures across Australia

JB Visser, C Wasko, A Sharma, R Nathan

2023-09-01

It is well known that as a consequence of climate change, higher temperatures are causing extreme precipitation events to intensif..

Improved Extreme Rainfall Frequency Analysis Using a Two-Step Kappa Approach

D O’Shea, R Nathan, A Sharma, C Wasko

2023-04-01

Accurate estimation of annual exceedance probabilities (AEPs) of extreme rainfalls through rainfall frequency analysis is a critic..

Can annual streamflow volumes be characterised by flood events alone?

C Dykman, A Sharma, C Wasko, R Nathan

2023-02-01

Can total annual streamflow in any given year be largely characterised by a relatively small number of high flow events? A compreh..

Projecting changes in flood event runoff coefficients under climate change

M Ho, R Nathan, C Wasko, E Vogel, A Sharma

2022-12-01

Climate change is projected to impact on the magnitude, spatial location, and timing of large precipitation events, with evidence ..

The Impact of Climate Change on Operational Probable Maximum Precipitation Estimates

JB Visser, S Kim, C Wasko, R Nathan, A Sharma

2022-11-01

The safety of high-risk water infrastructure, such as dams and nuclear power plants, is often assessed by reference to their abili..

Rethinking urban storm water management through resilience – The case for using green infrastructure in our warming world

S Hettiarachchi, C Wasko, A Sharma

2022-09-01

Urban flooding is one of the greatest threats to life and property, further exacerbated by the impacts of a warming climate. Balan..

A global assessment of change in flood volume with surface air temperature

W He, S Kim, C Wasko, A Sharma

2022-07-01

Climate change is expected to have a significant impact on water security, with higher temperatures causing both enhanced droughts..

Automating rainfall recording: Ensuring homogeneity when instruments change

C Wasko, JB Visser, R Nathan, M Ho, A Sharma

2022-06-01

Sub-daily rainfall is used in modelling of small catchments, design of urban drainage, calculating soil erosion, understanding the..

Linking Total Precipitable Water to Precipitation Extremes Globally

S Kim, A Sharma, C Wasko, R Nathan

2022-02-01

The relationship between extreme precipitation (EP) and precipitable water (W) is useful to assess design extremes and speculate o..

Eliminating the Hook in Precipitation Temperature Scaling

JB Visser, C Wasko, A Sharma, R Nathan

2021-12-01

Observational studies of extreme daily and subdaily precipitation temperature sensitivities (apparent scaling) aim to provide evid..

Evidence of shorter more extreme rainfalls and increased flood variability under climate change

C Wasko, R Nathan, L Stein, D O'Shea

2021-12-01

Increases in extreme rainfall intensities as a result of climate change pose a great risk due to the possibility of increases in p..

Linking temperature to catastrophe damages from hydrologic and meteorological extremes

C Wasko, A Sharma, A Pui

2021-11-01

Increases in the magnitude of storm and flood related catastrophes due to climate change are predicted to increase associated econ..

Decreases in relative humidity across Australia

E Denson, C Wasko, MC Peel

2021-07-01

How relative humidity is changing is important for our understanding of future changes in precipitation and evaporation. For examp..

Estimating design hydrologic extremes in a warming climate: Alternatives, uncertainties and the way forward

A Sharma, S Hettiarachchi, C Wasko

2021-04-19

It is now well established that our warming planet is experiencing changes in extreme storms and floods, resulting in a need to be..

Incorporating climate change in flood estimation guidance

C Wasko, S Westra, R Nathan, HG Orr, G Villarini, R Villalobos Herrera, HJ Fowler

2021-04-19

Research into potential implications of climate change on flood hazard has made significant progress over the past decade, yet eff..

Intensification of short-duration rainfall extremes and implications for flood risk: Current state of the art and future directions

HJ Fowler, C Wasko, AF Prein

2021-04-19

Review: Can temperature be used to inform changes to flood extremes with global warming?

C Wasko

2021-04-19

As climate change alters flood risk, there is a need to project changes in flooding for water resource management, infrastructure ..

Implications of event-based loss model structure on simulating large floods

D O'Shea, R Nathan, C Wasko, P Hill

2021-04-01

Event-based rainfall-runoff models used for design flood estimation and operational flood forecasting commonly represent losses (t..

Understanding trends in hydrologic extremes across Australia

C Wasko, Y Shao, E Vogel, L Wilson, QJ Wang, A Frost, C Donnelly

2021-02-01

Changes in the hydrologic cycle have far reaching impacts on agricultural productivity, water resources availability, riverine eco..

Resolving Inconsistencies in Extreme Precipitation-Temperature Sensitivities

JB Visser, C Wasko, A Sharma, R Nathan

2020-09-28

Extreme precipitation events are intensifying with increasing temperatures. However, observed extreme precipitation-temperature se..

Impact of atmospheric circulation on the rainfall-temperature relationship in Australia

Bhavik Magan, Seokhyeon Kim, Conrad Wasko, Renaud Barbero, Vincent Moron, Rory Nathan, Ashish Sharma

2020-09-01

Anthropogenic climate change is leading to the intensification of extreme rainfall due to an increase in atmospheric water holding..

An Improved Covariate for Projecting Future Rainfall Extremes?

TP Roderick, C Wasko, A Sharma

2020-08-01

Projection of extreme rainfall under climate change remains an area of considerable uncertainty. In the absence of geographically ..