A5074986379- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Climate variability and models
- Soil Moisture and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Plant Water Relations and Carbon Dynamics
- Wind and Air Flow Studies
- Flood Risk Assessment and Management
- Aeolian processes and effects
- Hydrology and Drought Analysis
- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Human Pose and Action Recognition
- Tree-ring climate responses
- Geophysics and Gravity Measurements
- Ocean Waves and Remote Sensing
- Fire effects on ecosystems
- Atmospheric aerosols and clouds
- Hand Gesture Recognition Systems
- Wind Energy Research and Development
- Energy Load and Power Forecasting
- Advanced Fiber Optic Sensors
- Hearing Impairment and Communication
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
University of Missouri
2014-2023
U.S. National Science Foundation
2005
University of Salford
2000-2004
NSF National Center for Atmospheric Research
2003
Met Office
2003
NOAA National Severe Storms Laboratory
2003
Bureau of Meteorology
2003
James Cook University
2003
Transnational Press London
1999
University of Reading
1997
The radiative characteristics of stratocumulus clouds are dependent upon their microphysical properties, primarily the liquid water content and effective radius drop population. Aircraft observations droplet spectra in warm over North Atlantic around British Isles by Hercules C-130 aircraft U.K. Meteorological Office Research Flight have been used to calculate radar reflectivity, content, radius. Empirically derived relationships, found from more than 4000 km flight data on 11 separate days,...
Abstract Rainfall events in the United Kingdom during twentieth century have been surveyed and those identified as extreme by Flood Studies Report (1975) standards examined for common features. Events of duration up to 60 hours were considered order investigate that could cause flash floods. More than half 50 short‐period convective storms. The rainfall classified meteorological situation, location season, allowing identification conditions under which occurred. Suitable split into three...
AbstractA good short-period forecast of heavy rainfall is essential for many meteorological and hydrological applications. Traditional deterministic stochastic nowcasting methodologies have been inadequate in their characterization pixelwise reflectivity propagation, intensity, uncertainty. The methodology presented herein uses an approach that efficiently parameterizes spatio-temporal dynamic models terms integro-difference equations within a hierarchical framework. accounts the uncertainty...
Statistical and case study–oriented comparisons of the quantitative precipitation nowcasting (QPN) schemes demonstrated during first World Weather Research Programme (WWRP) Forecast Demonstration Project (FDP), held in Sydney, Australia, 2000, served to confirm many earlier reported findings regarding QPN algorithm design performance. With a few notable exceptions, algorithms based upon linear extrapolation observed motion (Lagrangian persistence) were generally superior more sophisticated,...
Abstract Object-oriented verification methodology is becoming more and common in the evaluation of model performance on high-resolution grids. The research herein describes an advanced version object-oriented approach that involves a combination object identification multiple scales with Procrustes shape analysis techniques. multiscale technique relies heavily novel Fourier transform to associate signals within convection different spatial scales. Other features this new scheme include using...
Long-term urban and rural climate data spanning January 1995 through October 2013 were analyzed to investigate the Urban Heat Island (UHI) effect in a representative mid-sized city of central US. Locally distributed also collected at nested low density urban, recently developed, high monitoring sites from June September improve mechanistic understanding spatial variability UHI based upon land use intensity. analyses (1995–2013) indicate significant differences (p < 0.001) between average...
The first World Weather Research Programme (WWRP) Forecast Demonstration Project (FDP), with a focus on nowcasting, was conducted in Sydney, Australia, from 4 September to 21 November 2000 during period associated the Sydney Olympic Games. Through international collaboration, nine nowcasting systems United States, Kingdom, Canada, and Australia were deployed at Office of Bureau Meteorology (BOM) demonstrate capability modern forecast quantify benefits delivery real-time nowcast service....
Abstract Very short-period quantitative precipitation forecast (QPF) or nowcast schemes provide deterministic output that fails to convey explicit measures of the uncertainty in forecast. Presented here is a methodology based upon Bayesian hierarchical model produces QPF product for 1-h period along with an associated estimated error field. The quality comparable other and increase utility by allowing forecasters judge trustworthiness products.
A very simple method for measuring the attenuation of integrated optical waveguides using a fibre probe is reported. The has been successfully used attenuations as low 0.3 dB/cm.
Abstract The radar reflectivity and liquid water content of stratocumulus clouds have been computed from cloud droplet spectra recorded during more than 4000 km penetrations by an aircraft, the probability detecting various values as a function sensitivity threshold has derived. goal study is to specify required for any future spaceborne radar. In extensive marine deeper about 200 m, occasional but ubiquitous drizzle-sized droplets up μm dominate return increase it between 10 20 dB above...
Abstract. To relate observed rainfall rates (R) to the kinetic energy flux (E) that affects soil erosion it is necessary develop relationships between two. This paper explores theoretical E–R based on gamma distributions of drop size. The relationship poorly defined unless assumptions are made about changes in shape drop-size distribution (DSD) with rate. study suggests assumption an exponential DSD leads overestimation flux. Further, incorporation a horizontal component allows for clearer...
There are differences in the character of surface-based and elevated convection, one type may pose a greater threat to life or property. The lightning rainfall characteristics eight thunderstorm cases that occurred between 2007 2010 over central Continental United States were tested for statistical differences. Only events produced heavy rain (>50.8 mm·day−1) investigated. nonparametric Mann–Whitney test was used determine if significantly different than surface based events. Observations...
In this work, we introduce the BBC-Oxford British Sign Language (BOBSL) dataset, a large-scale video collection of (BSL). BOBSL is an extended and publicly released dataset based on BSL-1K introduced in previous work. We describe motivation for together with statistics available annotations. conduct experiments to provide baselines tasks sign recognition, language alignment, translation. Finally, several strengths limitations data from perspectives machine learning linguistics, note sources...
Abstract The recognition of the possibility extreme flooding remains a major challenge for hydrometeorologists. In this paper scoring system river catchments is described which aims to provide an indication flood potential. By using that identifies contributions event from variety components it possible update and comprehend likelihood flooding. scheme tested published data consequences storms in England Wales. methodology capable formalising intelligence tables often developed by...
Several severe thunderstorms, including a tornadic supercell, developed on the afternoon of 3 November 2000, during Sydney 2000 Forecast Demonstration Project. Severe weather included three tornadoes, damaging wind gusts, hail to 7-cm diameter, and heavy rain causing flash flooding. A unique dataset was collected data from two Doppler radars, surface mesonet, enhanced upper-air profiling, storm photography, damage survey. Synoptic-scale forcing weak mesoscale factors were central development...
Abstract. Since the advent of dual-polarization radar technology, many studies have been conducted to determine extent which differential reflectivity (ZDR) and specific phase shift (KDP) add benefits estimating rain rates (R) compared (Z) alone. It has previously noted that this new technology provides significant improvement rain-rate estimation, primarily for ranges within 125 km radar. Beyond range, it is unclear as whether National Weather Service (NWS) conventional R(Z)-convective...
This study aimed to determine the atmospheric conditions in which sea-effect snow (SES) and non-SES events occurred a meso-scale structure. All between 2009 2018 were found by examining aviation reports at two international airports Istanbul, Turkey. Then, threshold values intervals presented for SES on basis of many meteorological parameters (e.g., air temperature, dew point, relative humidity, heat fluxes, sea surface temperature (SST)). In addition, an algorithm was created operational...
A weather radar and processing system has been developed in conjunction with North West Water Ltd., a water utility responsible for the supply of potable treatment wastewater northwest England. The primary objective to develop which can produce accurate reliable quantitative estimates rainfall at temporal spatial resolution commensurate requirements urban drainage modelling. This paper describes procedures removing ground clutter adjusting (using Probability Matching Method). An archive...
Mid-Missouri experienced up to 2 min 40 s of totality at around solar noon during the total eclipse 2017. We conducted Eclipse Meteorology Experiment examine land-atmosphere interactions eclipse. Here, research examining responses in three contrasting ecosystems (forest, prairie, and soybeans) is described. There was variable cloudiness first fourth contacts (i.e., start end partial obscuration) forest prairie; however, irradiance (K↓) signals were relatively clean. Unfortunately, forcing...