Extreme weather events have significant consequences, dominating the impact of climate on society. While high-resolution models can forecast many types extreme synoptic timescales, long-term climatological risk assessment is an altogether different problem. A once-in-a-century event takes, average, 100 years simulation time to appear just once, far beyond typical integration length a model. The...

In this paper we describe the implementation of a numerical weather forecast model on a massively parallel computer system. This model is a production code used for routine weather forecasting at the meteorological institutes of several European countries. The modi cations needed to achieve a data-parallel version of this model without explicit message passing are outlined. The achieved perform...

To recognize application of Artificial Neural Networks (ANNs) in weather forecasting, especially in rainfall forecasting a comprehensive literature review from 1923 to 2012 is done and presented in this paper. And it is found that architectures of ANN such as BPN, RBFN is best established to be forecast chaotic behavior and have efficient enough to forecast monsoon rainfall as well as other wea...

Can a relatively small numerical weather prediction ensemble produce any more forecast information than can be reproduced by a Gaussian probability density function (PDF)? This question is examined using site-specific probability forecasts from the UK Met Office. These forecasts are based on the 51-member Ensemble Prediction System of the European Centre for Medium-range Weather Forecasts. Veri...

Weather nowcasting is a meteorological forecast which alerts civil protection institutions in case of heavy rain events, tornadoes, fires or heat waves and so on. This technique needs to process different data in a very short time. This paper, critically describes the design process of a computational infrastructure for weather nowcasting using both web and Grid technologies as a suitable solut...

We investigated the impact of assimilating microwave radiances from the Advanced Microwave Sounding Unit-A (AMSU-A) and the Microwave Humidity Sounder (MHS) into the Hurricane Weather Research and Forecasting (HWRF) model on the forecast of typhoon tracks over the western Pacific Ocean. The assimilation of MHS observations has positive impacts on the track forecast, but the assimilation of AMSU...

The butterfly universe photo was made using water sprayed on glass that had been treated with Dupont’s Rain X, which allows the droplets to be much larger than normal. The droplets become wide-angle lenses when you place an object underneath the sprayed glass. The droplets are then photographed with a macro lens. In this picture, I placed an 8 10 photo of a monarch butterfly underneath the glas...

This paper presents the combination of different precipitation data sets and the distributed hydrological model, in order to examine the flood runoff reproductivity of scattered observation catchments. The precipitation data sets were obtained from observation using rain-gages, satellite based estimate (TRMM), and numerical weather prediction model (NWP), then were coupled with the super tank m...