Meteorological forecasts and warnings will begin to transition from traditional alphanumeric code (TAC) form to data-centric information to better support the common understanding on the various operational constraints, capabilities and needs. The following SWIM-compliant forecast parameters and phenomena will begin to be made available to users and will include:

Wind speed and direction (aerodrome) including gusts and operationally significant wind shifts
Air temperature and dew point temperature (aerodrome)
Upper level:
- Wind (speed and direction), including departure to Top of Climb (TOC) and then Top of Descent (TOD) to landing
- Air temperature and dew point temperature or equivalent (i.e. humidity), including height of freezing level and lower tropospheric temperature inversions
Flight level and temperature of tropopause
Geopotential altitude for flight levels
Pressure (aerodrome) (i.e. QNH, QFE)
Visibility (aerodrome), Runway visual range (RVR)
Cloud type (of operational significance)
Cloud coverage, bases, tops and layers
Thunderstorms, Lightning, Convection (TCU & CB)
Precipitation (ie. drizzle, rain, freezing rain, snow, hail)
Weather (ie. dust storm, sand storm, funnel cloud, squall, smoke, haze, mist, fog)
Icing (airframe and engine),
Liquid Water Content, Iced Water Content
Turbulence, Mountain waves, Wind shear
Fronts
Radioactive clouds, Toxic chemicals
Tropical cyclones
Volcanic ash
Sulphur dioxide (SO2) and other hazardous gases
Aerodrome surface (runway) temperature, state
Sea temperature, state and wave height (seaports)
Space weather events
Tsunami, Flood

Characteristics of the meteorological information include:

Time (ie. issue time, validity, commencement/cessation, lead time)
Units of measurement
Resolution (temporal & spatial)
Geo Location (2D/3D/4D context, point, line or polyhedron)
Movement
Severity, Accumulation, Intensity
Range (Max. – Min.)
Variations
Probability of occurrence
Confidence/Uncertainty of forecast
Reliability
Data sample period
Auto
Change indicator/period
Amendment / Correction
Operational Status
Source
Thresholds
Format (TAC, Gridded, Graphical, IWXXM)
Data quality flag
Runway identification or location identifier
Effects/impact on aviation systems (i.e. communications, navigation & surveillance systems)
Radiation (exposure)

Human-readable meteorological advisory and warning products start to be derived from the meteorological information/data to better suit user needs and can be based on user defined thresholds. Meteorological information to be used to assess impact.

Verification of quality (accuracy) of forecast parameters. An increased use performance measures (via compliance, availability and regularity indices) of forecast parameters.

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Operations

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GANP Portal

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