The paper presents a new hourly high-resolution (i.e., at 0.02°, ≃2.2 km) precipitation dataset, labelled as [email protected], obtained by dynamically downscaling ERA5 reanalysis convection permitting scale (CPS) over 20 European cities for the recent past thirty years (1989–2018). activity is performed within framework of Contract implemented Fondazione CMCC to support Sectoral Information System about "Disaster Risk Reduction" (see...

Estimating the main hydrodynamic features of real vegetated water bodies is crucial to assure a balance between their hydraulic conveyance and environmental quality. Riparian vegetation stands have high impact on channels. The present work has aim integrate riparian vegetation’s reflectance indices hydrodynamics flows assess morphometry bulk drag coefficients distribution along an abandoned drainage channel fully covered by 9–10 m Arundo donax (commonly known as giant reed) stands, starting...

Flood hazard mitigation in urban areas crossed by vegetated flows can be achieved through two distinct approaches, based on structural and eco-friendly solutions, referred to as grey green–blue engineering scenarios, respectively; this one is often best management practices (BMP) low-impact developments (LID). In study, the hydraulic efficiency of scenarios reducing flood hazards an area a river located Central Tuscany (Italy), named Morra Creek, were evaluated for return period 200 years,...

The present paper deals with a United States Bureau of Reclamation (USBR) Type II stilling basin, which is characterized by blocks at the end chute and dentated sill basin. For this USBR only gives overall design criteria concerning basin length block dimensions on basis assumption that hydraulic jump remains confined within sill. No considerations are provided possible different types, pressure regimes, forces acting To comply such lack, an experimental campaign was undertaken focuses...

The paper considers a methodology to assess rainfall erosivity in Italy for the recent decades (1981–2010), building on datasets and materials freely available, such as those included within Climate Data Store (CDS) of Copernicus Change Service (C3S). Twenty-one referenced empirical models (R-factor) based coarse data are tested compared; then, custom model is calibrated, with support seasonal pattern clustering by means Self-Organizing Map. Moreover, large database sub-hourly observations,...

The Flow Duration Curve (“FDC”) is one the most effective and practical tools in hydrological sciences that not only enhances understanding of process basins but also assists analyzing water availability stream flow fluctuations. significant challenge hydrologists have to face an absence or scarcity data ungauged basins, where direct measurements are feasible. To tackle this issue, regionalization FDCs has emerged as a persuasive method. This approach, while applying...

An integrated Visual Basic Application interface is described that allows for sensitivity analysis, calibration and routing of hydraulichydrological models. The routine consists in the combination three freeware tools performing hydrological modelling, hydraulic modelling calibration. With such an approach, made possible even if information about sewers geometrical features incomplete. Model parameters involve storage coefficient, time concentration, runoff initial abstraction Manning...

Abstract In the present paper, an ensemble approach is proposed to estimate possible modifications caused by climate changes in extreme precipitation regime, with rain gauge Napoli Servizio Idrografico (Naples, Italy) chosen as test case. The research, focused on analysis of extremes basis model simulations and rainfall observations, structured several consecutive steps. first step, all dynamically downscaled EURO‐CORDEX at about 12 km horizontal resolution are collected for current period...

Abstract Understanding and modelling pluvial flood patterns is pivotal for the estimation of impacts in urban areas, especially a climate change perspective. However, under conditions poses several challenges. On one hand, identification collection data suitable flood‐related evaluations requires consistent computational scientific effort. other large difficulties can arise reproduction rainfall‐runoff transformation process cases when only little information about subsurface processes...

The estimation of rainfall erosivity in the Revised Universal Soil Loss Equation (RUSLE) requires long series sub-hourly observations. Due to endemic unavailability this information, at least with required degree detail and coverage, empirical models are frequently used for basing on easily retrievable values monthly or annual scale. In paper, an model is calibrated Italy bridge scale gap by means 10-year observations 171 Italian rain gauges, then applied using ERA5-Land gridded dataset...

The paper is focused on the optimal scheduling of a drainage pumping station, complying with variations in pump rotational speed and recurrent pattern for inflow discharge. structured several consecutive steps. In first step, experimental set-up described results calibration tests different machines are presented to obtain equations linking significant variables (discharge, head, power, efficiency). Then, those utilized build mixed-integer optimization model able find solution that minimizes...

This research aims at understanding and analyzing the possible effect of climate change on seasonal rainfall regime over Italy. First, patterns are identified by applying a clustering procedure based Self-Organizing Map, adopting comparing results different gridded datasets describing current (1981-2010). Second, for clusters impact in near (2021-2050) far future (2051-2080) is assessed employing an ensemble bias-adjusted EUROCORDEX projections under Representative Concentration Pathways...

The lack of geometrical and hydraulic information about sewer networks often excludes the adoption in-deep modeling tools to obtain prioritization strategies for funds management. present paper describes a novel statistical procedure defining scheme preventive maintenance based on small sample failure data collected by Sewer Office Municipality Naples (IT). Novelty issues involve, among others, considering parameters as continuous variables accounting their interdependences. After analysis...

This paper describes and discusses the available experimental investigations concerning vertical pipe flow in order to understand possible differences caused by different intake types inflow conditions. Specific attention is given difference between drain pipes overflow influence of conditions on head–discharge relation. Data from literature are systematized treated a unified manner provide comprehensive view regimes, among which four main selected, namely Borda free full flow, governed...

Abstract Remote monitoring and collection of water consumption has gained pivotal importance in the field demand understanding, modelling prediction. However, most analyses that can be performed on such databases could jeopardized by inconsistencies due to technological or behavioural issues causing significant amounts missing anomalous values. In present paper, a nonparametric, unsupervised approach is presented investigate reliability database, applied dataset district metering area Naples...

The runoff coefficient φ is a crucial parameter for the estimation of mean value annual maximum flood peak discharges in ungauged watersheds, where no direct measures are available. If rational method applied as rainfall–runoff transformation model, accounts all hydrological losses, and it can be conceptually defined fraction total rainfall contributing to response. In present paper, focusing on Southern Peninsular Italy, regression model proposed improve prediction above function several...

Abstract. The runoff coefficient φ is a crucial parameter for flood peak discharge estimate in ungauged drainage basins. Tables and graphs generally allow the determination of somewhat empirical way that can lead to inconsistency application; therefore, it important identify other parameters be utilized assess more directly. In present paper, focusing on Southern Continental Italy, simple analytical expression between soil potential maximum retention S proposed; moreover, an improvement this...

An experimental campaign is undertaken in order to investigate the hydraulic features of a vertical drop shaft, also considering influence venting system consisting coaxial pipe, projecting within shaft with different plunging rates. Three flow regimes are observed: “weir flow” for very low head values, where profile subject atmospheric pressure; “full high water flows pressurized regime along whole shaft; and “transitional intermediate values. Weir full can be experimentally investigated...