In what ways are weather and climate (and changes in weather and climate) psychologically significant to people? How is the importance that people attach to weather and climate manifested on cognitive, emotional, and behavioral levels? These questions are addressed in the present project which describes the further development and evaluation of a psychological measurement tool, the Weather Sali...

Optimizations in the petascale era require modifications of existing codes to take advantage of new architectures with large core counts and SIMD vector units. This paper examines high-level and low-level optimization strategies for numerical weather prediction (NWP) codes. These strategies employ thread-local structures of arrays (SOA) and an OpenMP directive such as OMP SIMD. These optimizati...

The Weather Research and Forecast (WRF) model is a new model development effort undertaken jointly by the National Center for Atmospheric Research (NCAR), the National Oceanic and Atmospheric Administration (NOAA), and a number of collaborating institutions and university scientists. The model is intended for use by operational NWP and university research communities, providing a common framewo...

The GriddLeS (Grid Enabling Legacy Software) middleware is a novel software layer that allows previously separate legacy applications to be coupled in a software workflow over the grid without any changes to the application source code. We have previously tested GriddLeS on a number of applications, including a small atmospheric sciences workflow in which weather and climate models are coupled....

In this paper a new advection scheme for the online coupled chemical–weather prediction model EnviroHIRLAM is presented. The new scheme is based on the locally mass-conserving semi-Lagrangian method (LMCSL), where the original two-dimensional scheme has been extended to a fully three-dimensional version. This means that the three-dimensional semi-implicit semi-Lagrangian scheme which is current...

Performance evaluation for a free space optical (FSO) link with latest wireless optical communications (WOC) vendor’s networks specifications is presented. Analysis is performed for non return to zero (NRZ)-return to zero (RZ) line codes with various operating wavelengths using APD and PIN photodiodes receivers. The study includes the effect of atmospheric attenuation due to scattering effects ...

Precise satellite orbits and clock information for global navigation satellite systems (GNSS) allow zerodifference position solutions, also known as precise point positioning (PPP) to be calculated. In recent years numerical weather models (NWM) have undergone an improvement of spatial and temporal resolution. This makes them not only useful for the computation of mapping functions but also all...

Wind speed is a most important weather parameter to record and monitor for many applications like meteorology, shipping, aviation etc. Wind observations are very important for general (operational) aviation meteorology, and weather prediction. Wind profilers are vertically directed pulsed Doppler radars which can analyze the back scattered signals and determine the velocity of air along the bea...

An important function of traffic flow management ensuring the number of aircraft entering a sector does not exceed the amount that can be safely controlled by the sector controller. One factor that makes this task difficult is the uncertainty of the impact of convective weather, as both the weather forecast and the impact given specific weather is uncertain. In this investigation, we study this...

Multiple pulse-repetition interval (multi-PRI) transmission is part of an adaptive signal transmission and processing algorithm being developed to combat range–velocity (RV) ambiguity for the Terminal Doppler Weather Radar (TDWR). In Part I of this two-part paper, an adaptive clutter filtering procedure that yields low biases in the moments estimates was presented. In this part, algorithms for ...