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Introduction

The following describe a set of sensor data that AWOS (Automated Weather Observing System) Sensors can produce, and reference data associated with AWOS sensors. 

The "Core concepts" below describes the relationship between the sensors, the airport/runways and measurements produced.

Table of content

Core concepts

ConceptDescription
AirportEverything is related to an airport, identified by name (AirportName) , ICAO code (AirportICAO) and position. All sensors are associated with one airport given by the AirportICAO code.
Runway(s)

An airport has one or more runways. The runways are (of course) static, but the logical (compass oriented) name can change.

RunwaySectionEach runway has 3 RunwaySections (A, B, C) that are static. A runway section is exactly one third of the runway length. The runway sections are named A, B and C. Section naming starts at the lowest runway name (number). 
Sensors

Sensors take measurements of different things, from wind to cloud cover. Each measurement consists of one value of a defined type. If one physical sensor takes measurements of different types it will be considered as if separate sensors were used. Each sensor has a separate (logical) name and can only measure one type of measurements.

Sensors have a placement related to the airport. All sensors have a physical location given by coordinates. Sensors might also have a location associated with for instance a runway section.

Sensor placement

Sensors have a static placement, but some can measure things that are non-local (cloud cover).
Sensors can have the following placements:

  • "Close" to the airport
  • Airport
  • Runway section
    • A
    • B
    • C
  • All sensors have a location given by coordinates.
Sensor types

Sensor (measurement) types. A sensor (or a group of sensors at the same location) can take different types measurements, as listed below. 

  • Wind
  • Runway Visual Range
  • Visibility
  • Present Weather
  • Temperature
  • Dewpoint
  • Humidity
  • Pressure
  • Cloud Cover
Sensor valuesThe sensor, or related software, can measure or calculate a set of values for the different measurement types. A temperature sensor can directly measure the temperature, and can calculate mean temperatures for different periods. Sensor values are of a defined type as given by the element description in the Airport Data Dictionary.
Sensor nameAll sensors have a name that is unique to the airport the sensor is associated with. The names is used to identify the sensor and relevant reference data.


Sensor Reference Data

TermDescription
SensorReferenceDataReference data for one sensor
  • SensorName

  • SensorType
  • Wind
  • RunwayVisualRange
  • Visibility
  • PresentWeather
  • Temperature
  • Dewpoint
  • Humidity
  • Pressure
  • CloudCover
  • SensorAirport
AirportICAO


  • SensorPosition???
Text string describing the position
  • SensorRunway
PhysicalRunwayCode
  • SensorSection
RunwaySection
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