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  2. METAR - Wikipedia

    en.wikipedia.org/wiki/METAR

    METAR indicates that the following is a standard hourly observation. KTTN is the ICAO identifier for the Trenton-Mercer Airport . 051853Z indicates the day of the month is the 5th and the time of day is 1853 Zulu/ UTC , or 1:53PM Eastern Standard Time .

  3. Braking action - Wikipedia

    en.wikipedia.org/wiki/Braking_action

    Pilots may receive this data through a "Snowtam runway state decoder" which forms an appendix to the internationally recognised METAR (METeorological Aerodrome Report). In some countries in Europe, pilots will not receive local updated/modified braking action reports directly from an air traffic control (ATC) source unless a recent braking ...

  4. IWXXM - Wikipedia

    en.wikipedia.org/wiki/IWXXM

    ICAO Meteorological Information Exchange Model (IWXXM) is a format for reporting weather information in XML/GML.IWXXM includes XML/GML-based representations for products standardized in International Civil Aviation Organization (ICAO) Annex III, such as METAR/SPECI, TAF, SIGMET, AIRMET, Tropical Cyclone Advisory (TCA), Volcanic Ash Advisory (VAA), [1] Space Weather Advisory and World Area ...

  5. Terminal aerodrome forecast - Wikipedia

    en.wikipedia.org/wiki/Terminal_aerodrome_forecast

    In meteorology and aviation, terminal aerodrome forecast (TAF) is a format for reporting weather forecast information, [1] particularly as it relates to aviation.. TAFs complement and use similar encoding to METAR reports.

  6. Variable-Rate Multimode Wideband - Wikipedia

    en.wikipedia.org/wiki/Variable-Rate_Multimode...

    Variable-Rate Multimode Wideband (VMR-WB) is a source-controlled variable-rate multimode codec designed for robust encoding/decoding of wideband/narrowband speech. The operation of VMR-WB is controlled by speech signal characteristics (i.e., source-controlled) and by traffic condition of the network (i.e., network-controlled mode switching).

  7. Colour state - Wikipedia

    en.wikipedia.org/wiki/Colour_state

    The colour state may be appended to a METAR report. A short period forecast called a TREND which covers the following two hours from the observation may also be added, often with reference to the colour state.

  8. Surface weather observation - Wikipedia

    en.wikipedia.org/wiki/Surface_weather_observation

    Despite this, METAR reports from the United States also report the temperature (and dewpoint, see below) in degrees Celsius. Dew point is the temperature to which a given parcel of air must be cooled, at constant atmospheric pressure, for water vapor to condense into water. The condensed water is called dew. The dew point is a saturation point.

  9. SYNOP - Wikipedia

    en.wikipedia.org/wiki/SYNOP

    SYNOP (surface synoptic observations) is a numerical code (called FM-12 by WMO) used for reporting weather observations made by staffed and automated weather stations. SYNOP reports are typically sent every six hours by Deutscher Wetterdienst on shortwave and low frequency using RTTY.