weather radar Articles

  • Development of method for X-band weather radar calibration

    Calibration of the X-band LAWR (Local Area Weather Radar) is traditionally based on an assumed linear relation between the LAWR radar output and the rainfall intensity. However, closer inspection of the data reveal that the validity of this linear assumption is doubtful. Previous studies of this type of weather radar have also illustrated that the radar commonly has difficulties in estimating ...


    By IWA Publishing

  • Evaluating the accuracy of C- and X-band weather radars and their application for stream flow simulation

    This paper investigates the accuracy of rainfall estimates from C- and X-band weather radars and their application for stream flow simulation. Different adjustment procedures are applied to raw radar estimates using gauge readings from a network of 12 raingauges. The stream flow is simulated for the 48.17 km2 Molenbeek/Parkbeek catchment located in the Flemish region of Belgium based on a lumped ...


    By IWA Publishing

  • Rainfall observations and assessment using vertically pointing radar and X-band radar

    Two years of K-Band micro rain radar-2 (MRR) data are used to investigate the vertical variability of rain in an atmospheric column and assess MRR rainfall estimates accuracy from both direct rainfall measurement using the Mie Theory (i.e., MRR RR) and a Z-R relationship (Z = 300 R1.4) (i.e., MRR Rz). Two different height resolutions (HR) settings are used. A nearby Doppler weather radar KEWX ...


    By IWA Publishing

  • Precipitation Type Specific Radar Reflectivity-rain Rate Relationships for Warsaw, Poland

    Abstract Implementation of weather radar precipitation estimates into hydrology, especially urban hydrology practice in Poland, requires the introduction of more precise radar reflectivity versus rain rate (Z-R) relationships accounting for drop size distribution (DSD) specific for different precipitation phases. We explored the development of precipitation type dependent Z-R relationship on ...


    By OTT HydroMet

  • Radar-rainfall estimation algorithms of Hydro-NEXRAD

    Hydro-NEXRAD is a prototype software system that provides hydrology and water resource communities with ready access to the vast data archives of the U.S. weather radar network known as NEXRAD (Next Generation Weather Radar). This paper describes radar-rainfall estimation algorithms and their modular components used in the Hydro-NEXRAD system to generate rainfall products to be delivered to ...


    By IWA Publishing

  • Development of the Stormwater Information System that protects life and property from floods

    The Stormwater Information System distributes storm pump operating conditions, etc. to residents in real time via the Internet utilizing a private network that employs optical fibers installed in sewer pipes. Information to be distributed includes advisory and warning information relating to weather data, weather radar information, river information, emergency disaster information, refuge maps, ...

  • Evaluation of a near-real time NEXRAD DSP product in evolution of heavy rain events on the Upper Guadalupe River Basin, Texas

    This study evaluates the Next Generation Weather Radar (NEXRAD) Digital Storm-Total Precipitation product (DSP) by analyzing 30 rain events on the Upper Guadalupe River Basin, Texas, from September 2006 to May 2007. The DSP product provides relatively accurate information on the evolution of rain events at high spatial and temporal resolutions in near-real time. This is particularly important ...


    By IWA Publishing

  • MILITARY/DEFENSE

    Sunkye defense series connectors are working to help the end customer understand the complex needs and issues that affect R&D, manufacturing, the workforce, and the supply chain. The "defense series" deliver high-reliability performance in harsh-environment military, automotive, aerospace applications with high-power, high-voltage, and high-vibration requirements, including GBR, ...

  • Assimilation of weather radar and binary ubiquitous sensor measurements for quantitative precipitation estimation

    Assimilation of data from heterogeneous sensors and sensor networks is critical for achieving accurate measurements of environmental processes at the time and space scales necessary to improve forecasting and decision-making. Owing to different measurement accuracies and types of spatial and/or temporal measurement support of the component sensors, it is often unclear how best to combine these ...


    By IWA Publishing

  • Long-term evaluation of gauge-adjusted precipitation estimates from a radar in Norway

    The implementation of weather radars in Norway by the Norwegian Meteorological Institute (met.no) has made radar a potential tool to improve hydrologic predictions through the use of distributed precipitation input. Met.no supplies gauge-adjusted quantitative hourly radar precipitation estimates. A key concern regarding the use of radar precipitation estimates in hydrology is their accuracy. In ...


    By IWA Publishing

  • Big data and hydroinformatics

    Big data is popular in the areas of computer science, commerce and bioinformatics, but is in an early stage in hydroinformatics. Big data is originated from the extremely large datasets that cannot be processed in tolerable elapsed time with the traditional data processing methods. Using the analogy from the object-oriented programming, big data should be considered as objects encompassing the ...


    By IWA Publishing

  • Automated convective and stratiform precipitation estimation in a small mountainous catchment using X-band radar data in Central Spain

    For the purposes of weather nowcasting, flood risk monitoring and water resources assessment, it is often difficult to achieve a reliable spatio-temporal representation of rainfall due to a low rain gauge network density. However, quantitative precipitation estimation (QPE) has acquired new prospects with the introduction of weather radars, thanks to their higher spatio-temporal resolution. ...


    By IWA Publishing

  • Improved wet weather wastewater influent modelling at Viikinmäki WWTP by on-line weather radar information

    Municipal wastewater treatment plant (WWTP) influent is typically dependent on diurnal variation of urban production of liquid waste, infiltration of stormwater runoff and groundwater infiltration. During wet weather conditions the infiltration phenomenon typically increases the risk of overflows in the sewer system as well as the risk of having to bypass the WWTP. Combined sewer infrastructure ...


    By IWA Publishing

  • How Cuba turns early warning into joined-up action

    Cuba's early warning approach holds lessons for other countries, write disaster risk reduction specialists Veronica F. Grasso and José Rubiera. Advances in the early warning of natural hazards could bring great benefits to countries and communities. But early warning needs early action: if political will and coordination are lacking, the advantages could be lost. What a ...


    By SciDev.Net

  • South West & Anglian Telemetry System for The Environment Agency - Case Study

    SWANTEL for The Environment Agency The Environment Agency are the leading public organisation for protecting and improving the environment in England and Wales. Around 5 million people, in 2 million properties, live in flood risk areas in England and Wales. The Environment Agency has an important role in warning people about ...

  • How better weather forecasting can help stretch water supplies

    Reservoir managers look to storm predictions to make smarter choices about dam operations Last year, New York City faced an unusual situation. An epic winter in the city’s Delaware River watershed brought heavy snow and very little rain. Stubborn cold meant there was no snowmelt to refill water-supply reservoirs, even as the city’s 9.5 million residents were draining them dry. A ...


    By Ensia

  • Alert system for Heavy rainfall inaugurated in Bavarian municipality - Case study

    With the help of an early alert system for heavy rainfall installed throughout Bavaria, the citizens of the federal state are fighting floods. Installed in 2017 and extensively tested in the meantime, it was officially inaugurated for the municipality of Adelsdorf on June 20. Especially after a storm on Corpus Christi (31 May), this was an important step towards dealing with the increasingly ...


    By OTT HydroMet

  • Urban pluvial flood prediction: a case study evaluating radar rainfall nowcasts and numerical weather prediction models as model inputs

    Flooding produced by high-intensive local rainfall and drainage system capacity exceedance can have severe impacts in cities. In order to prepare cities for these types of flood events – especially in the future climate – it is valuable to be able to simulate these events numerically, both historically and in real-time. There is a rather untested potential in real-time prediction of urban ...


    By IWA Publishing

  • Comparison of short-term rainfall forecasts for model-based flow prediction in urban drainage systems

    Forecast-based flow prediction in drainage systems can be used to implement real-time control of drainage systems. This study compares two different types of rainfall forecast – a radar rainfall extrapolation-based nowcast model and a numerical weather prediction model. The models are applied as input to an urban runoff model predicting the inlet flow to a waste water treatment plant. The ...


    By IWA Publishing

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