We report on an ongoing effort to build a Dynamic Data Driven Application System (DDDAS) for short-range forecast of wildfire behavior from real-time weather data, images, and sensor streams. The system should change the forecast when new data is received. The basic approach is to encapsulate the model code and use an ensemble Kalman filter in time-space. Several variants of the ensemble Kalman...

The National Weather Service’s Meteorological Development Laboratory is redeveloping the current LAMP system with special emphasis on aviation weather (Ghirardelli 2005). LAMP is an update system to the Model Output Statistics (MOS) and provides statistically derived guidance for the forecasting of sensible weather elements. The new LAMP system will run hourly producing one hour forecasts spann...

This paper focuses on flood-region detection using monitoring images. However, adverse weather affects the outcome of image segmentation methods. In this paper, we present an experimental comparison of an outdoor visual sensing system using region-growing methods with two different growing rules-namely, GrowCut and RegGro. For each growing rule, several tests on adverse weather and lens-stained...

This paper investigates the performance of a weather forecasting application (Brazilian Regional Atmospheric Modeling System BRAMS) on a number of selected HPC clusters in order to understand the impact of different architectural configurations on its performance and scalability. We simulated atmosphere conditions over South America for 24 hours ahead with BRAMS, using 100 cores as a starting p...

Numerical weather predicting models often require solving a 3-D Helmholtz problem which derived from the governing equation of dynamical core in Met Office Unified Model, by preconditioned iterative solvers. In this dissertation, a GPU implementation of preconditioned conjugate gradient (CG) iterative method will be focused on. A given serial code has been ported on GPU. According to the portin...

We present a novel web browser based interactive visualization application for exploring 3D weather radar data sets delivered by next generation phased array radars. The purpose is to aid in rapid observation of localized weather phenomenon, short term weather forecasting and disaster prevention. Our application allows remote users to access multiple data sets via a web browser application, and...

The present study examines the effects of six weather parameters (temperature, wind power, sunlight, precipitation, air pressure, and photoperiod) on mood (positive affect, negative affect, and tiredness). Data were gathered from an online diary study (N = 1,233), linked to weather station data, and analyzed by means of multilevel analysis. Multivariate and univariate analyses enabled distincti...

Climate sensitive urban planning and building design require detailed information on effects of a changing climate. To simulate thermal building performance appropriate data are required as “standardized weather files”. But as historic weather records cannot be used to model building performance for future climate, synthetic “future weather” data are necessary. Here we present the steps to deri...

introduction superficial x-ray therapy is one of the most important treatment methods in radiotherapy especially in the treatment of superficial skin lesions (up to 300 kvp). quality of the x-ray beam that can be expressed by half-value layer (hvl), are important indices for this type of treatment effective energy of photon and homogeneity coefficient (hc). materials and methods the hc of the s...

the iranian civil code is mostly influenced by juristic sources and french law. in the article 1234 of french civil code, a legal institution entitled “terminator condition” is included in the causes of discharge of an obligation. the article 264 of iranian civil code, which deals with description of causes of discharge of an obligation, corresponds to the article 1234 of french civil law. howe...