[field_related_solution_area] Products

The Experimental ADDS project was successfully completed on June 30th, 2015. All research has now been transferred to Operational ADDS.  Please consult that site for all of your future aviation... more

ADDS display of clear-air turbulence
National Ceiling and Visibility Analysis (NCVA)
HEMS browser product display

Recognizing that probabilistic weather forecasts are critical to meeting the air traffic efficiency goals of NextGen, RAL is working under FAA sponsorship to develop a probabilistic 1–10 hr C&... more

Ceiling and Visibility Forecast Product (CVF)
Juneau Airport Wind System (JAWS)
Operational Aviation Digital Data Service (ADDS)

See Project Information

Cidd is a X-based, real-time data display application which supports PPI, CAPPI, and cross sectional views. Cidd is the main display tool within the Auto-Nowcast Environment. It is highly configurable and is used to display the majority of the MDV and SPDB formated data produced within the Environment.

TITAN is a real-time algorithm for automated identification, tracking, and extrapolation based short-term forecasting of thunderstorms utilizing volume-scan weather radar data.  For each time step... more

Thunderstorm Identification, Tracking, Analysis, and Nowcasting (TITAN)
FINECAST® Nowcasting System: High Resolution AnalysisImproving Nowcasting via Data Assimilation

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

Variational Lidar Assimilation System (VLAS)

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

Real-Time Four-Dimensional Data Assimilation (RT-FDDA)

The National Convective Weather Forecast (NCWF) product was developed by NCAR/RAL and eventually operationalized by the NWS Aviation Weather Center (AWC).  It was the first extrapolation-based... more

National Convective Weather Forecast Product (NCWF)

Named after the Native American Chief Niwot, this new short-term forecasting system is being developed based on a blending of observation extrapolation technology and numerical weather prediction... more

AOAWS Display
USDA Avian Radar EvaluationSince 1988, >219 people have been killed after aircraft bird strikes, worldwide Bird/wildlife encounters cost U.S. civil aviation >$600 million/year USDA responsible... more
Avian Radar Target Simulator

The Current Icing Product (CIP) combines sensor and Numerical Weather Prediction model output to provide an hourly, three-dimensional diagnosis of the icing environment. The Forecast Icing Product... more


The Current Icing Product (CIP) combines sensor and Numerical Weather Prediction model output to provide an hourly, three-dimensional diagnosis of the icing environment. The Forecast Icing Product... more

Diagnose Convectively–Induced Turbulence (DCIT)
Graphical Turbulence Product (GTG-3)
In Situ Turbulence Diagnosis
Low-Level Wind Shear Alert System (LLWAS)
NASA Icing Remote Sensing System (NIRSS)
NCAR Turbulence Detection Algorithm (NTDA)

The Research Applications Laboratory is addressing oceanic weather needs for aviation through the development of an intelligent system that generates 0-2 hour nowcasts.

Remote, oceanic... more

Oceanic Convection and Nowcasting Hazards
Radar-based Wind Shear Alert System
Windshear and Turbulence Warning System (WTWS)

Thunderstorms and especially lightning pose a safety risk to people outdoors whether they are working or enjoying themselves with recreational activities.  It is imperative to bring people inside... more

BoltAlert® lightning potential (high risk in magenta) and actual strikes.
The FAA and NCAR are working to solve the Aircraft Ground Icing Problem.

The accumulation of ice on aircraft prior to take off has long been recognized as one of the most significant safety hazards... more

Weather Support to Deicing Decision Making (WSDDM®)
Consolidated Storm Prediction for Aviation (CoSPA)

Controlling snow and ice buildup on roadways during winter weather events presents several challenges for winter maintenance personnel. Among these challenges is the need to make effective winter... more

Maintenance Decision Support System (MDSS)
WRF Model Output

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

WRF model output showing simulated radar reflectivity (dBZ) for Typhoon Mawar at 3.3-km (2.1-mi) grid spacing. Time period is from 0000 UTC 22 August 2005 to 0000 UTC 24 August 2005.
DICast® System
LOGICast™ software system

The Radar Icing Algorithm, or 'RadIA', utilizes the polarized moments from the National Weather Service's network of WSR-88D operational radars and the most recent Numerical Weather Prediction... more

Radar Icing Algorithm

An icing hazard receiving increased attention lately is that of the ingest of large amounts of ice crystals into jet engines, causing them to fail during flight. As of this time, no accidents have... more

Experimental Icing Product Alaska - IPA

Aviation-based winter weather research at RAL, sponsored by the Federal Aviation Administration, has focused on developing two new systems in support of Ground Deicing operations. The Liquid Water... more

When an aircraft experiences winter precipitation conditions on the ground, it is required to undergo a de/anti-icing procedure involving glycol-based fluids before takeoff. In order to determine... more

CubeView is a data viewer reference implementation utilizing data and standards from the 4-D Weather Data Cube. CubeView displays data provided to the 4-D Cube by the NOAA National Weather Service... more

The Flight Path Tool (FPT) is a comprehensive, interactive, geographical display that brings together all of the weather products available on ADDS. It runs as a desktop application on your... more

Flight Path Tool

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


The National Convective Weather Forecast (NCWF) product, designed and implemented by the National Centerfor Atmospheric Research (NCAR), provides a diagnose of the current locations of convective... more

National Convective Weather Forecast 2 (NCWF2)

The Remote Oceanic Meteorology Information Operational (ROMIO) Demonstration is a project sponsored by the FAA’s Weather Technology in the Cockpit (WTIC) program.  It is focused on... 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


Because of their light weight, slower air speed and limited endurance, most small Unmanned Aircraft Systems (UAS) are much more susceptible to variations in wind speed/direction and turbulence... more