1   Definition

Weather Data is a set of data that includes measures of:

  1. Temperature
  2. Humidity
  3. Air Pressure
  4. Ice
  5. Wind
  6. Condensed water in various states:
    1. gaseous: fog
    2. liquid: rain
    3. frozen: snow, sleet, hail

2   Functional Requirements

  1. Temperature measured in degrees °C.
  2. Ice measured as Ice Conditions expressed as yes/no.
  3. Wind measured as Wind Conditions expressed by Orientation and velocity measured in m/s.
  4. Density of fog measured in meters of clear visibility.
  5. Amount of rain measured in mm/h.
  6. Hail measured in mm of hailstone size.
  7. Snow measured mm/h.
  8. Sleet measured in meters of clear visibility.

3   Syntax

https://schemas.mpai.community/CAV2/V1.0/data/WeatherData.json

4   Semantics

Label Size Description
Header N1 Bytes Weather Data Header
– Standard-WeatherData 9 Bytes The characters “CAV-WDT-V”
– Version N2 Bytes Major version – 1 or 2 Bytes
– Dot-separator 1 Byte The character “.”
– Subversion N3 Bytes Minor version – 1 or 2 Bytes
WeatherDataID
 N4 Bytes  
WeatherData N5 Bytes  
– Temperature N6 Bytes Measured in °C
– RelativeHumidity N7 Bytes Measured in %
– Air pressure N8 Bytes Measured in millibars
– Ice N10 Bytes yes/no
– WindConditions N11 Bytes Azimuth and Elevation in degrees and velocity in m/s
– Fog M12 Bytes Measured in meters of clear visibility.
– Rain N13 Bytes Measured in mm/h
– Hail N14 Bytes Measured in mm size of hail.
– Snow N15 Bytes Measured in mm/hour.
– Sleet N16 Bytes Measured in metres of clear visibility.
DescrMetadata N17 Bytes Descriptive Metadata