Fine-Scale Analysis and Nowcast System (FINECAST®) is used by the research community to study... more
VLAS represents the Doppler lidar variant of VDRAS. VLAS provides very high-resolution wind information at the neighborhood scale and has been used to study atmospheric transport and diffusion in... more
The RT-FDDA system was developed to provide high-resolution analyses and short-term (0 – 12 h) forecasts, although recent advances in computing power enable longer outlooks to be generated. RT-... more
The Global Climatology Analysis Tool (GCAT) is capable of generating fine-scale (3.3km) climatological analyses anywhere around the globe. For example, in a given month, analyses for each of the... more
Climate-FDDA uses the RT-FDDA system (MM5/WRF mesoscale model + assimilation of observations) to build a database of gridded “weather” phenomena over a particular region of earth
“Weather... more
Technology developed in this project utilizes Chemical, Biological, Radiological, Nuclear (CBRN), and meteorological sensor readings along with transport and dispersion models to... more
To support testing and evaluation of SDF, RAL is also developing a virtual testing and evaluation environment, known as Virtual THreat-Response Emulation and Analysis Testbed (VTHREAT). This will... more
To improve meteorological support through the development and application of new technologies.
DescriptionThe Four-Dimensional Weather (4DWX) System is the product of twelve years... more
The Weather Research and Forecasting (WRF) Model is a next-generation mesoscale numerical weather prediction system designed to serve both atmospheric research and operational... more
GRAFS (GRidded Atmospheric Forecast System) is a software system that is designed to... more
Two new postprocessing methods are proposed to reduce numerical weather prediction’s systematic and random errors. The first method consists of running a postprocessing algorithm inspired by the... more
Real-time ensemble RTFDDA forecasting system combines real-time WRF-based FDDA technologies and a probabilistic forecast calibration technology for producing reliable real-time probabilistic wind/... more
RTFDDA-LES extends real-world numerical weather prediction to large-eddy-simulation (LES) scales, with grid sizes down to ~30m. The NCAR WRF-based RTFDDA system is formulated for simultaneously... more
4-D relaxation ensemble Kalman Filter (4D-REKF) data assimilation and forecasting system. 4D-REKF integrates and leverages the cutting-edge ensemble Kalman filter (ENKF) data assimilation scheme,... more
As part of NASA and NREL funded projects, a new method has been proposed and demonstrated for the long-term estimate of the wind speeds at a target site, a key step in wind resource assessments (... more
We have developed a software tool, the SOM-Assisted Hazard Area Risk Analysis (SAHARA), to reduce large climate datasets to more manageable sizes - yet statistically similar - which are then used... more
Atmospheric releases of hazardous materials, either accidental or intentional, continue to pose a viable threat to both United States citizens, as well as troops abroad and at home. To... more
Modeling the population dynamics of dengue vector mosquito Aedes aegypti is often done using dynamic life cycle models that simulate the life cycles of cohorts of mosquitoes using a mechanistic... more
FastEddy limited area domain simulation with the cell perturbation method for resolved turbulence instigation (top) versus a periodic domain reference simulation (bottom). This feature allows... more
VDRAS relies on data assimilation, a technique for combining real-world observations and computer model output to create a more accurate forecast.
VDRAS has a very fast update cycle,... more
While the weather forecast enterprise has dramatically increased its capabilities to provide... more
