This data flow contains surface transportation related weather observations (e.g. temperature, pressure, wind parameters, humidity, precipitation, visibility, pavement temperature, pavement conditions, etc.) and surface transportation weather observation attributes (or meta data). This data flow consists of the following data items each of which is defined in its own DDE:

+ weather_observation_attributes

Sub Data Flows

Parent Data Flows

Associated PSpecs/Terminators

Parent Information Flows