Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"rain gauge"”.
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Real-time flood forecasting model intercomparison and parameter updating rain gauge and weather radar data
… catchments in the three countries, using rain gauge and radar derived rainfall estimates and time-series analysis. An extended inter-comparison of real-time flood forecasting models has been carried out and an attempt has been made to rank the flood forecasting models. It was found that an …
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Verification of Satellite Derived Precipitation Estimates Over Complex Terrain: A Ground Truth Analysis for Nepal
… estimates from the satellite-based Tropical Rainfall Measuring Mission (TRMM) instrumentation play a key role in flood analysis and water resource management across many regions of the world where rain gauge data are sparsely available. Previous studies have produced conflicting results …
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Storm Water Management Using a High Density Rainfall Network Along With Long Term Records
… Paper No. 40 (TP-40) in 1961 which provides a rainfall atlas for the United States. These rainfall frequencies have been used by engineers throughout the United States including Jefferson Parish, Louisiana. Rainfall from Audubon and the New Orleans International Airport rain gauge stations were …
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NON-PARAMETRIC STATISTICAL APPROACH TO CORRECT SATELLITE RAINFALL DATA IN NEAR-REAL-TIME FOR RAIN BASED FLOOD NOWCASTING
Floods resulting from intense rainfall are one of the most disastrous hazards in many regions of the world since they contribute greatly to personal injury and to property damage mainly as a result of their ability to strike with little warning. The possibility to give an alert about a flooding …
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Desempenho, limitações e aprimoramento das estimativas de precipitação do IMERG sobre o Nordeste brasileiro: aplicações na Bacia do Parnaíba
… where the scarcity and poor distribution of rain gauge stations hinder adequate spatial representation of precipitation. In this context, improving remote sensing-based estimates has become essential, with the Integrated MultisatellitE Retrievals for GPM (IMERG) product standing out as one of …
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Bridging the gap : comparative analysis of a gap filling X-band radar QPE algorithms and their implications for nowcasting and hydrological modeling
… both Multi-Radar Multi- Sensor (MRMS) QPE and rain gauge inputs for days of extreme discharge rates. Lastly, the effectiveness of six nowcasting models were explored with the MZZU radar. The LINDA nowcast system was identified as the most proficient but computationally intensive. Notably, SPROG …
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Three-Dimensional Distance Based Geostatistical Models to Adjust Radar Rainfall Data
Accurate and reliable rainfall input is crucial for hydrological modeling studies. Rain gauge collection and weather radar rainfall estimate are two of the most common techniques used for receiving rainfall data at a watershed. This study focuses on the development of three-dimensional (3D) …
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Precipitation Estimation Methods in Continuous, Distributed Urban Hydrologic Modeling
… experience significant spatial variability in rainfall fields. Few studies have compared QPE methods in small, urban watersheds, and studies which have examined this topic only compared model results on an event basis using a small number of storms. This study sought to compare the efficacy of …
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Modelli di preannuncio delle piene in piccoli bacini ed incertezze legate alla densita' della rete pluviometrica.
… river water levels. Moreover, real-time rainfall observations at high resolution in time and space are required to understand the watershed processes involved. However small catchments are generally scarcely instrumented and only a sparse rain gauge network is available. This work analyze …
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Tests of quantitative precipitation estimates using national weather service dual-polarization radar in Missouri
… watches and warnings. The underestimation of rainfall accumulation by radar algorithms often leads to undiagnosed flash flooding, so it is necessary to determine which type of quantitative precipitation estimation (QPE) equation best assesses the actual amount of rain that has fallen at a …
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Utilising Reverse Hydrology to quantify and improve the spatio-temporal information content of catchment rainfall estimates for flood modelling
… is a term describing methods for estimating rainfall from streamflow. The method presented here is based on combining inversion of a causal rainfall-runoff model with regularisation. This novel method, termed RegDer, combines a continuous-time transfer function model with regularised …
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Optimizing Z/R Relationship for Radar-based Precipitation Estimates
… relationship between radar reflectivity (Z) and rainfall rate (R). The relationship is expressed as Z = aRb where a and b are correlated with drop size distribution (DSD) and vary across locations. Using a Z/R relationship to translate radar reflectivity to rainfall rate can allow for real-time …
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Flood modelling in the Ammer watershed using coupled meteorological and hydrological models
… of floods are described. Apart from conventional rain gauge data, forecasts of several Numerical Weather Prediction Models (NWP) as well as rain radar data and precipitation derived from METEOSAT are examined, scaled and applied within the framework of a GIS-structured and physically based …
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The hydrometeorology of Kuwait : characterization and modeling of rainfall distribution
… seasonal, and inter annual variability of Kuwait rainfall is discussed based on rain gauge and satellite datasets. It is found that the spatial distribution of Kuwait's annual rainfall features a gradual increase from the southwest to the northeast. Furthermore, Kuwait experiences a distinct rainy …
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Spatio-Temporal Dependence of Precipitation over the Contiguous United States
… of these two measures are investigated. Rain gauge reports and radar precipitation analyses are used here to address three issues related to the areal estimation of intensity and frequency of precipitation. Differences between the order of spatial and temporal averaging methods are proven …
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Spatial precipitation trends and effects of climate change on the Hawai'ian Hualalai aquifer
… 2000 meters. Western Hawai'i has a dense rain gauge network and changes in precipitation in the last several decades have been observed, though the rate sand significance of change is unclear. This study introduces a new method of integrated spatial analysis aimed at representing spatial …
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Tropical orographic rainfall regimes according to the tropical rainfall measuring mission
… precipitation in tropical regions of complex terrain is a challenging problem. While ground-based instrumentation including rain gauge networks and radar data offer some insights, the lack of spatially complete gauge networks and radar artifacts such as severe beam blockage lead to large errors …
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Addressing Water Resource Issues In Barbados Through An Isotopic and Atmospheric Characterization of Precipitation Variability
… data logger was attached to a tipping bucket rain gauge to count the tips and record the total rainfall every 10 minutes. In the cave a Hobo data logger was used to record relative humidity and temperature at 10-minute intervals. Rainwater, dripwater, and stream water samples were collected at …
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Development and evaluation of a watershed-scale hybrid hydrologic model
… spatially distributed short- and long-term rainfall runoff generation and routing using relatively simple methodologies and state-of-the-art spatial data in a GIS environment. In Distributed-Clark, spatially distributed excess rainfall estimated with the SCS curve number method and a …
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Reliable broadband satellite-integrated network design through propagation and networking solutions
… with required service availability. Long term rainfall data has been analysed to characterise attenuation level at a selected region such as Dhaka. It is shown that rainfall is highly seasonal and attenuation level is quite high during monsoon. However, the seasonal behaviour of rainfall can be …
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