Article
Environmental Sciences
Yiannis Moustakis, Simon Michael Papalexiou, Christian J. Onof, Athanasios Paschalis
Summary: The study demonstrates that under climate change, hourly precipitation extremes and storm depths are expected to intensify in the US, with what is now a 20-year rainfall becoming a 7-year rainfall on average for approximately 75% of gridpoints. This intensification is mainly characterized by an increase in rainfall tail heaviness, with statistically significant changes in the seasonality and duration of rainfall extremes observed over about 95% of the domain.
Article
Water Resources
Ilaria Gnecco, Anna Palla, Paolo La Barbera, Giorgio Roth, Francesca Giannoni
Summary: In the field of urban hydrology, selecting the appropriate form of the intensity-duration-frequency (IDF) curve is crucial. This study proposes two different formulations of IDF curves, which consider the sub-hourly and super-hourly durations separately. The proposed curves are compared with two well-known IDF formulations that are calibrated using only super-hourly data. The findings suggest that the proposed IDF curves provide the best reliability indicator, considering the different lengths and behavior of sub-hourly and super-hourly data.
HYDROLOGICAL SCIENCES JOURNAL
(2023)
Article
Construction & Building Technology
Muhammad Noor, Tarmizi Ismail, Shamsuddin Shahid, Md. Asaduzzaman, Ashraf Dewan
Summary: This study proposed a method for constructing IDF curves at ungauged locations under climate change scenarios, with a case study in peninsular Malaysia. The research found that future rainfall intensity will vary under different RCPs, with more pronounced changes for short-duration rainfall and higher emission scenarios.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Geosciences, Multidisciplinary
David Dunkerley
Summary: The use of 'Huff quartiles' for classifying rainfall events may lead to neglecting rainfall intensity. This study explores a modification to this approach by introducing an intensity threshold, which can improve the relevance of rainfall event classification and result in the re-classification of some events.
Article
Engineering, Civil
Korbinian Breinl, David Lun, Hannes Mueller-Thomy, Guenter Bloeschl
Summary: This study focuses on how rainfall mechanisms and catchment characteristics influence the relationship between rainfall and flood probabilities. Regional differences in rainfall and runoff behaviors were observed, with wet catchments showing higher elasticities compared to dry catchments. Overall, catchment characteristics were found to be the dominant control on flood frequency patterns.
JOURNAL OF HYDROLOGY
(2021)
Article
Geosciences, Multidisciplinary
Felix S. Fauer, Jana Ulrich, Oscar E. Jurado, Henning W. Rust
Summary: Assessing the relationship between intensity, duration, and frequency of extreme precipitation is crucial for water management system design. By using a duration-dependent formulation of the GEV distribution, a flexible model is developed to describe IDF relations over a wide range of durations.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2021)
Article
Environmental Sciences
Daniele Feitoza Silva, Slobodan P. Simonovic, Andre Schardong, Joel Avruch Goldenfum
Summary: This study introduces a framework for generating non-stationary IDFs under climate change by assuming that the probability of occurrence of quantiles changes over time. The results show that EQM(NS) can capture trends in the present and translate them to estimated future rainfall intensities. The comparison of present and future IDFs suggests a significant reduction in return period for future rainfall intensities, highlighting emerging risks to water infrastructure systems.
Article
Geosciences, Multidisciplinary
Matthew A. A. Thomas, Donald N. N. Lindsay, David B. B. Cavagnaro, Jason W. W. Kean, Scott W. W. McCoy, Andrew P. P. Graber
Summary: Increased wildfire activity in the western United States has revealed gaps in understanding postfire debris-flow generation. By characterizing flows in an unstudied area, we found that short-duration, high-intensity rainfall is more likely to initiate runoff-generated debris flows compared to total storm rainfall. This finding suggests the need for a focus on localized thunderstorms or bands of intense rainfall during prolonged rainstorms for hazard assessment and warning.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Ottar Tamm, Egle Saaremae, Kristiina Rahkema, Jaak Jaagus, Toomas Tamm
Summary: This study quantified the effect of climate change on design storm intensity based on observations and found that the annual maximum rainfall intensities in Estonia have increased at an average rate of 4% per decade. These findings provide critical knowledge for urban water management decision-makers.
Review
Environmental Sciences
David Dunkerley
Summary: Many design principles for rain gauges that can record rainfall intensity have been proposed or developed, but there is no standard or optimum method. New methods, utilizing new technologies and data sources, are still being explored. The choice of appropriate data collection methods is of contemporary importance due to the response of rainfall intensity to climate change.
Article
Meteorology & Atmospheric Sciences
Marzuki Marzuki, Krisna Suryanti, Helmi Yusnaini, Fredolin Tangang, Robi Muharsyah, Mutya Vonnisa, Dodi Devianto
Summary: The diurnal variation of precipitation in Sumatra shows spatial variations in amount, frequency, and intensity, influenced by terrain elevation and distance to the coastline. Stations with high rainfall amount also tend to have high rainfall frequencies, with regional differences in timing of diurnal peaks. The amplitude of diurnal cycles tends to increase with elevation and decrease with distance from the coastline.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Environmental Sciences
Christoffer B. B. Andersen, Daniel B. B. Wright, Soren Thorndahl
Summary: Frequency analysis of rainfall data is important in hydrological system design and modeling. Advances in weather radar technology allow for higher spatial resolution analysis. Stochastic storm transposition framework shows promise in recreating rainfall statistics from radar data. This study estimates IDF relationships at different scales using a 17-year radar dataset and compares them to rain gauge statistics.
Article
Environmental Sciences
Wilk Sampaio de Almeida, Steffen Seitz, Luiz Fernando Coutinho de Oliveira, Daniel Fonseca de Carvalho
Summary: Different rainfall patterns have varying impacts on soil erosion, with high intensity and low duration rainfall leading to the highest runoff and sediment yield. The study results can contribute to developing new perspectives in designing water erosion experiments with simulated rain, considering the duration, intensity, and their association.
INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
(2021)
Article
Environmental Sciences
Ali Shokri
Summary: This paper develops a novel event-based rainfall-runoff equation that incorporates rainfall characteristics and evaluates its performance compared to previous models. The results show that the new equation improves runoff estimation in almost all case studies. Furthermore, considering its simplicity, efficiency, and consideration of rain event duration, the new equation has the potential to become a robust alternative method to the conventional curve number method in hydrological engineering projects.
ENVIRONMENTAL MODELING & ASSESSMENT
(2023)
Article
Multidisciplinary Sciences
Vincent Moron, Renaud Barbero, Hayley J. Fowler, Vimal Mishra
Summary: By analyzing hourly rainfall data in India, we identified six canonical local-scale storm profiles and different characteristics of wet events. We observed an increase in the frequency of convective storm types in recent years, likely due to global warming.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)