The Met Office has developed the Virtual Met MastTM (VMM) tool for assessing the feasibility of potential wind farm sites. It provides site-specific climatological wind information for both onshore and offshore locations. The VMM relies on existing data from past forecasts from regional-scale numerical weather prediction (NWP) models, to which corrections are applied to account for local site c...

We consider the negative weight percolation (NWP) problem on hypercubic lattice graphs with fully periodic boundary conditions in all relevant dimensions from d=2 to the upper critical dimension d=6. The problem exhibits edge weights drawn from disorder distributions that allow for weights of either sign. We are interested in the full ensemble of loops with negative weight, i.e., nontrivial (sy...

With the advent of digital computers and their continuous increasing processing power, the ‘Numerical Weather Prediction’ (NWP) models which solve a close set of equations of atmospheric model, have been adopted by most of the meteorological services to issue day to day weather forecasts. These forecasts are issued for public in general. But there are many limitations inherent to this technique...

Radio wave propagation on low-altitude paths over the ocean above 2 GHz is significantly affected by negative refractivity gradients in the atmospheric surface layer (ASL) which form what is often referred to as an evaporation duct (ED). Refractivity from clutter (RFC) is an inversion approach for estimation of the refractivity profile from radar clutter, and RFC-ED refers to its implementation...

There is considerable concern in the numerical weather prediction (NWP) community that the Advanced Technology Microwave Sounder (ATMS) is merely being built to the noise specifications of the Advanced Microwave Sounding Unit (AMSU) and the Microwave Humidity Sounder (MHS). Since the AMSU/MHS have greatly exceeded the noise specification, the NWP community is worried that the ATMS in fact would...

Penelitian ini merupakan upaya pengembangan Model Output Statistics (MOS) yang akan digunakan sebagai alat kalibrasi prakiraan cuaca jangka pendek. Informasi mengenai akurat diharapkan dapat meminimalkan risiko kecelakaan disebabkan oleh cuaca, khususnya dalam bidang transportasi udara dan laut. Metode dikembangkan mencakup beberapa stasiun pengamatan di Indonesia. MOS sebuah metode berbasis re...

Manycore chip architectures such as Graphics Processing Units (GPUs) have been shown to be highly e cient both in terms of total performance and small power consumption in many areas of Scientific Computing. However, implementing memory-bound applications such as elliptic solvers for large partial di↵erential equations (PDEs) remains a challenge. We consider iterative solvers for strongly aniso...

Weather forecasting is a complex process that involves numerous specialized fields of expertise. The output from computationally intensive numerical weather prediction (NWP) models forms the starting point of the forecasting process. Expert forecasters have both a general knowledge of large-scale weather systems and specific knowledge about the idiosyncratic behavior of local scale weather phen...

[1] Single column models (SCMs) are useful tools for the evaluation of parameterisations of radiative and moist processes used in general circulation models (GCMs). Most SCM studies to date have concentrated on regions where there is a sufficiently dense observational network to derive the required forcing data. This paper describes an ensemble single column modeling (ESCM) approach where the f...