service definitions for meteorological information services
Information aspects of the service
- WILSON Scott
This page holds the discussion on the information aspects of the service. It focuses on:
understanding the information offered by the service (information definition)
the filtering offered by the service.
The information definition has not been agreed and should not be used.
to do:
Base on https://codes.wmo.int/306/_4678. The information definition is based on phenomena found at https://codes.wmo.int/306/_4678.
Also check if there are things in AIRM not in 306 and decide if they should be part of the service offer.
Notes:
IWXXM uses AIXM profile: https://aixm.aero/schema/5.1.1_profiles/AIXM_WX/5.1.1b/AIXM_Features.xsd
Explanation
The information definition is extracted from the ATM Information Reference Model (https://airm.aero/). The AIRM is the ICAO endorsed reference vocabulary for defining air traffic management information. This means that the information definition is not just a copy of the IWXXM. However, service implementers who chose IWXXM can be assured that the semantic correspondences have been established (https://airm.aero/developers/semantic-correspondences).
The image below presents a simplified overview of the content of the information definition. It include:
metadata e.g. location, validity and traceability information
information concerning weather phenomena
information concerning weather conditions
Information Definition
identification
title | Aviation Meteorological Information Definition |
|---|---|
edition | 00.01.00 |
date | 2023-10-03 |
responsible party
organisation name | EUROCONTROL |
|---|---|
contact information | swim@eurocontrol.int |
role | author |
scope
abstract | The information definition covers the elements used by the various Meteorological SWIM services. |
|---|
namespace
namespace | tbd |
|---|
licence
BSD Licence
Copyright (c) 2023, EUROCONTROL
=====================================
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the names of EUROCONTROL nor the names of their contributors may be used to endorse or promote products derived from this specification without specific prior written permission.
THIS SPECIFICATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
==========================================
Editorial note: this license is an instance of the BSD license template as
provided by the Open Source Initiative:
http://www.opensource.org/licenses/bsd-license.php
data catalogue
This section of the information definition deals with the metadata.
Metadata
feature | attribute | type, multiplicity | identifier | definition | IWXXM | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|---|
EntityCollection |
|
|
| A collection of entities. | Report |
|
| relativeLocation | Entity: Aerodrome or Airspace or State |
| The location of an entity expressed in relation to another entity. | TAF.aerodrome | F |
| source | CharacterString |
| Name of entity or organisation that supplied data. | Unit name designator type |
|
| position | GM_Point |
| The geometry of the entity expressed as the position of a point on the surface of the Earth. |
|
|
| endValidity | DateTime |
| Date and time at which the data contained in the entity state ceases to be effective. | TAF.validPeriod.endPosition | F |
| startValidity | DateTime |
| Date and time at which the data contained in the entity state starts to be effective. | TAF.validPeriod.beginPosition | F |
| lastRevision | DateTime |
| Date and time when the data was last revised. |
| O |
| member | Entity: WeatherPhenomenon or WeatherCondition 0..* |
| An entity that is member of the collection. |
|
|
Aerodrome
feature | attribute | type, multiplicity | identifier | definition | IWXXM/AIXM | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|---|
Aerodrome |
|
| Aerodrome | A defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft. | AirportHeliport |
|
| designator | CharacterString | Aerodrome.designator | Designator for an aerodrome. | designator |
|
| locationIndicatorICAO | CharacterString | Aerodrome.locationIndicatorICAO | A four-letter code group formulated in accordance with rules prescribed by ICAO and assigned to the aerodrome. | locationIndicatorICAO |
|
| designatorIATA | CharacterString | Aerodrome.designatorIATA | Identifier that is assigned to a location in accordance with rules (resolution 767) governed by the International Air Transport Association (IATA). | designatorIATA |
|
| name | CharacterString | Aerodrome.name | Primary official name of an aerodrome as designated by an appropriate authority. | name |
|
| fieldElevation | ValVerticalDistanceType | Aerodrome.fieldElevation | The vertical distance above Mean Sea Level (MSL) of the highest point of the landing area. | fieldElevation |
|
| aerodromeReferencePoint | InfrastructurePoint | Aerodrome.aerodromeReferencePoint | The designated geographical location of an aerodrome. | ARP |
|
Airspace
feature | attribute | type, multiplicity | identifier | definition | IWXXM/AIXM | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|---|
Airspace |
|
| Airspace | A defined three dimensional region of space relevant to air traffic. | Airspace |
|
| designator | CharacterString | Airspace.designator | Published sequence of characters allowing the identification of the airspace. | designator |
|
| name | CharacterString | Airspace.name | Name given to an airspace by a responsible authority. | name |
|
| type | CodeAirspaceType [0..1] | Airspace.type | Indicator of the general structure or characteristics of a particular airspace. | type |
|
| isDesignatorICAO | Boolean | Airspace.isDesignatorICAO | An indicator of whether an airspace designator is recorded in ICAO Doc. 7910 'Location Indicators'. | designatorICAO |
|
| geometryComponent | AirspaceVolume | Airspace.geometryComponent | A portion of airspace that contributes to the definition of the airspace geometry. | geometryComponent |
|
State
feature | attribute | type, multiplicity | identifier | definition | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|
State |
|
| State | An internationally recognized geographic entity that provides air traffic service. |
|
| icaoNationalityLetters | CharacterString [0..1] | State.icaoNationalityLetters | Nationality letters as defined by ICAO. |
|
| isoCountryCode | CharacterString [0..1] | State.isoCountryCode | Country codes as defined by ISO. |
|
| name | CharacterString | State.name | Full official name of the state. |
|
| territory | CharacterString [0..1] | State.territory | Name of the territory within the state. |
|
This section of the information definition concerns the weather conditions.
WeatherCondition
feature | attribute | type, multiplicity | identifier | definition | IWXXM | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|---|
WeatherCondition |
|
|
| Weather observations or forecast for an area of interest. Note: This is the root for the various aviation conditions: AerodromeCondition. |
|
|
| analysisTime | DateTime |
| The time at which the forecast or observation process starts. |
|
|
| changeIndicator | CodeChangeIndicatorType |
| Indication about the type of meteorological conditions changes. |
|
|
| confidence |
|
| Quality of trusting for a forecast expressed as a percentage. |
|
|
| hasNoSignificantWeather |
|
| Indication that no specified en-route weather phenomena which may affect the safety of aircraft operations is occurring or expected to occur. |
|
|
| probability |
|
| Relative likelihood of a forecast expressed as a percentage. |
|
|
| type | CodeWeatherConditionType |
| The type of weather condition being reported. |
|
|
| weatherInformationSource | WeatherInformationSource |
| The weather information source. |
|
|
| contour | Contour |
| A contour used to outline a particular weather situation within the forecast or observation. |
|
|
| phenomenon | WeatherPhenomenon |
| The phenomenon of relevance for the weather condition. | surfaceWind, cloud, etc. |
|
Contour
feature | attribute | type, multiplicity | identifier | definition | applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|
Contour |
|
|
| An estimated or observed outline of a particular weather situation. | applicability: En-route significant weather only. |
| contourValue | Measure |
| The value of the measure that applies to that contour. |
|
AviationCondition
Inherits from WeatherCondition.
feature | attribute | type, multiplicity | identifier | definition |
| applicability (F-Forecast, O-Observation, E-En-route) |
|---|---|---|---|---|---|---|
AviationCondition |
|
|
| Weather observations and or forecast for a specific aeronautical location or airspace volume. |
|
|
| airPressure |
|
| Force per unit area exerted into a surface by the weight of air above that surface. |
|
|
| airTemperature |
|
| The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. |
|
|
| dewpointTemperature |
|
| The temperature to which a given air parcel must be cooled at constant pressure and constant water vapor content in order for saturation to occur. |
|
|
| maximumAirTemperature |
|
| The maximum air temperature. |
|
|
| maximumAirTemperatureTime |
|
| The time of the occurrence of the maximum air temperature. |
|
|
| minimumAirTemperature |
|
| The minimum air temperature. |
|
|
| minimumAirTemperatureTime |
|
| The time of the occurrence of the minimum air temperature. |
|
|
| relativeHumidity |
|
| At a given pressure and temperature, the percentage ratio of the gram-molecular weight of the water vapour to the gram-molecular weight that the air would have if it were saturated with respect to water at the same pressure and temperature. |
|
|
| verticalVisibility |
|
| Maximum distance at which an observer can see and identify an object on the same vertical as himself, above or below. | verticalVisibility |
|
| tropopause |
|
| Meteorological information about the tropopause. |
|
|
| ceiling |
|
| Meteorological information about the cloud ceiling. |
|