Task Status

This page is part of the ongoing SWIM communities of interest discussions. The content is working material. It should not be treated as final as it is still subject to review, comment and change.

Guidance

This template allows for the documentation of service definitions based on the requirements found at: /wiki/spaces/SCOI/pages/59605116

General requirements to remember:

SWIM-DEFN-010

Service definition coverage

A service definition shall define a single service

Note: This concerns the definition of a service that can be implemented by service providers. It is not used to describe a running service - use a service description in that case.

Note: This requirement uses "define" rather than "describe".

SWIM-DEFN-020

Service definition language

The textual descriptions in a service definition shall be written in English using the spelling listed as the primary British spelling when conflicting spellings exist.

-

Status Key

TBD - No work has started
WORKING - Content is being worked on, comments discussed
DRAFT - Draft is ready, comments resolved
REVIEWED - Group has reviewed, edited the final draft
AGREED - Content is finalised and agreed

Service Definition Identification

DRAFT

Trace

SWIM-DEFN-030

service definition identification	title	Service definition for the En-route Significant Weather Information Subscription and Request Service
	edition	00.00.01
	reference date	2023-06-22

Service Identification

REVIEWED

Trace

SWIM-DEFN-040

service identification	service name	En-route Significant Weather Information Subscription and Request Service

Service Abstract

DRAFT

Trace

SWIM-DEFN-050

service abstract

The En-route Significant Weather Information Subscription and Request Service provides the service consumer with en-route and approach meteorological information for weather that may affect the safety of aircraft operations.

The service consumer can subscribe to the service, specifying what sort of information is of interest, and receive information as it becomes available.

It is also possible to send a direct request, using a request-reply mechanism, to the service to get the relevant meteorological information.

The meteorological information is issued by the designated Meteorological Watch Office. The meteorological information is only intended to be used by service consumers within the aviation domain.

Service Definition Provider

DRAFT

Trace

SWIM-DEFN-085

service definition provider	name	EUROCONTROL
	description	EUROCONTROL is an intergovernmental organisation with 41 Member and 2 Comprehensive Agreement States.
	point of contact	swim@eurocontrol.int

Geographical Extent of Information

DRAFT

Trace

SWIM-DEFN-090

geographical extent of information

The service shall offer meteorological information concerning its own FIR/UIR/CTA at a minimum.

The service may offer additional meteorological information concerning other FIR/UIR/CTA based on mutual agreements between service providers.

Service Categories

DRAFT

Trace

SWIM-DEFN-095, SWIM-DEFN-100

service categories	category	category name	regulated information exchange
		value	METEOROLOGICAL_INFORMATION_EXCHANGE
		scheme	http://reference.swim.aero/information-services/service-categories/CodeRegulatedInformationExchangeType.html
	category	category name	information domain
		value	METEOROLOGICAL_INFORMATION
		scheme	https://reference.swim.aero/information-services/service-categories/CodeInformationDomainType.html
	category	category name	business activity
		value	INFORMATION_MANAGEMENT
		scheme	http://reference.swim.aero/information-services/service-categories/CodeBusinessActivityType.html
	category	category name	intended service consumer
		value	CIVIL_AIRSPACE_USER MILITARY_AIRSPACE_USER CIVIL_AIR_NAVIGATION_SERVICE_PROVIDER MILITARY_AIR_NAVIGATION_SERVICE_PROVIDER NETWORK_MANAGER
		scheme	https://reference.swim.aero/information-services/service-categories/CodeStakeholderType.html
	category	category name	intended service provider
		value	REGULATED_METEOROLOGICAL_SERVICE_PROVIDER
		scheme	http://reference.swim.aero/information-services/service-categories/CodeStakeholderType.html
	category	category name	service type
		value	METEOROLOGICAL_FEATURE_ACCESS_SERVICE METEOROLOGICAL_INFORMATION_SUBSCRIPTION_SERVICE METEOROLOGICAL_COVERAGE_ACCESS_SERVICE
		scheme	http://reference.swim.aero/information-services/service-categories/CodeServiceType.html

Service Standard Reference

DRAFT

Trace

SWIM-DEFN-120

Explanatory note

This field is left empty.

service standard reference	reference
	implemented options
	deviations/additions

Operational Environment

DRAFT

Trace

SWIM-DEFN-130

operational environment

operational needs

ATM needs to know about the occurrence or expected occurrence of specified en-route and approach weather phenomena that may affect the safety of aircraft operations, and of the development of those phenomena in time and space.

A list of operational needs that this service contributes to satisfying is available in Appendix C.

This service satisfies these by offering meteorological information as regulated by Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 and ICAO Annex 3.

The scope of the meteorological information satisfies the EU Implementing Regulation 2021/116 - Common Project One.

capabilities

The service provides high quality, up-to-date, trusted, regulated meteorological information in digital form for use by service consumers within the aviation domain.

information exchange requirements

IER 1

The information currently included in the SIGMET as defined in Commission Implementing Regulation (EU) 2017/373 and ICAO Annex 3.

For example, the following meteorological information could be exchanged:

Thunderstorms
Cyclones (Tropical Revolving Storms)
Severe turbulence
Severe icing
Severe mountain waves
Dust or sand storms
Volcanic ash

Service Functions

DRAFT

Trace

SWIM-DEFN-140

service functions	function	name	Request en-route and approach significant meteorological information
		description	The service consumer shall be able to request en-route significant meteorological information filtered by FIR/UIR/CTA, phenomenon and according to spatial, temporal and logical (e.g. severity threshold) operators.
		real-world effect	The meteorological information is received and can be used in ATM and other systems.
	function	name	Subscribe to en-route and approach significant meteorological information
		description	The service consumer shall be able to subscribe/unsubscribe in order to receive information based on given criteria such as the severity/threshold of the weather phenomenon.
		real-world effect	The service consumer subscribes to information offered by the service.
	function	name	Distribute en-route and approach significant meteorological information
		description	When new significant meteorological information is available, it shall be distributed to the subscribers.
		real-world effect	The service consumer is sent a message containing the relevant meteorological information.

Service Access and Use Conditions

DRAFT

Trace

SWIM-DEFN-150

service access and use conditions	legal constraints
	service policies	business policy
		operational policy	There shall be a service policy to ensure that only service consumers within the aviation domain can use the service. The service policy shall include a requirement that service consumers cannot pass the information obtained from the service to non-aviation users without prior authorisation from the service provider.
		technical policy
	service consumption constraints

Security Constraints

DRAFT

Trace

SWIM-DEFN-160

security constraints	authentication	The service shall ensure consumer authentication in accordance with the EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of a X.509 certificate or the use of a username/password. The service shall ensure provider authentication in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of a X.509 certificate.
	authorisation	The service shall ensure that satisfactory authorisation is put in place according to EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile requirement SWIM-TIYP-0070.
	confidentiality	The service shall ensure point-to-point confidentiality in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of Transport Layer Security (TLS) 1.2 or above.
	integrity	The service shall ensure point-to-point integrity in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of Transport Layer Security (TLS) 1.2 or above.

Quality of Service

DRAFT

Trace

SWIM-DEFN-180

quality of service	performance	capacity	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	performance	response time	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	reliability	availability	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	reliability	recoverability	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	security	confidentiality	The service shall ensure confidentiality by using SWIM Technical Infrastructure (TI) Yellow Profile bindings.
	security	integrity	The service shall ensure integrity by using SWIM Technical Infrastructure (TI) Yellow Profile bindings.

Quality of Data

DRAFT

Trace

SWIM-DEFN-185

quality of data

The meteorological information offered by the service shall satisfy the applicable sections of Commission Implementing Regulation (EU) 2017/373 of 1 March 2017, taking into account the specific requirements for providers of meteorological services in the Acceptable Means of Compliance (AMC) and Guidance Material (GM) to Part-MET.

The meteorological information offered by the service shall satisfy the quality requirements expressed in ICAO Annex 3.

Source of Information

DRAFT

Trace

SWIM-DEFN-190

source of information

source

The service provider shall ensure that the meteorological data offered by the services is received from the appropriate authorised originating sources. This includes:

REGULATED_METEOROLOGICAL_SERVICE_PROVIDER acting as the designated Meteorological Watch Office (MWO).

Service Validation Information

DRAFT

Trace

SWIM-DEFN-200

Explanatory note

This field is left empty.

service validation information	description

Application Message Exchange Pattern

DRAFT

Trace

SWIM-DEFN-210

application message exchange pattern	PUBLISH_SUBSCRIBE SYNCHRONOUS_REQUEST_REPLY

Service Behaviour

DRAFT

Trace

SWIM-DEFN-220

service behaviour	typical behaviour	The service behaviour shall be in accordance with the patterns detailed in the Message Exchange Patterns: Identification Guidelines. The interfaces have different behaviour. A combination of an AMQP 1.0 implementation and an OGC implementation shall be used for the basic behaviour. The typical behaviour for PUBLISH_SUBSCRIBE means that: The subscription is handled by either: a request-reply implementation (see En-route Significant Weather Information Subscription and Request Service Subscription Interface) or an email request to the service provider. The distribution of the messages is handled by an AMQP 1.0 implementation (see En-route Significant Weather Information Subscription and Request Service Distribution Interface). The typical behaviour for REQUEST_REPLY (as used in En-route Significant Weather Information Subscription and Request Service Request Interface) is as follows: Synchronous Request/Reply The request message is sent from the service consumer to the service The service consumer remains blocked while awaiting the reply The service remains blocked while processing the reply The Meteorological Aerodrome Forecast (Message), the reply message, is sent from the service to the service consumer.

Service Monitoring

DRAFT

Trace

SWIM-DEFN-230

service monitoring	A service monitoring mechanism should be made available to service consumers.

Service Interfaces

DRAFT

Trace

SWIM-DEFN-240

service interfaces	interface	name	En-route Significant Weather Information Subscription and Request Service Request Interface
		description	Allows the service consumer to request filtered meteorological information. Note: This interface is used to group the operations offered by the chosen OGC standard.
		provider/consumer side	Provider side
	interface	name	En-route Significant Weather Information Subscription and Request Service Subscription Interface
		description	Allows the service consumer to select and subscribe to meteorological information of interest. It allows the service consumer to manage the subscriptions e.g. to unsubscribe. Note: This is an optional interface. Many service providers will prefer to receive subscription requests by email.
		provider/consumer side	Provider side
	interface	name	En-route Significant Weather Information Subscription and Request Service Distribution Interface
		description	Allows the service provider to distribute updated meteorological information meeting the need of the service consumer that has subscribed for updates.
		provider/consumer side	Provider side

SWIM TI Profile and Interface Bindings

DRAFT

Trace

SWIM-DEFN-250, SWIM-DEFN-255

En-route Significant Weather Information Subscription and Request Service Request Interface

SWIM TI profile and interface bindings	profile name	EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile
	profile version	1.1
	selected service interface binding	WS_LIGHT
	selected network interface binding	The service shall use the network bindings of the SWIM TIYP.
	description	The interface shall use at least one of the following OGC standards: for services that exchange the meteorological information as resources: OGC API – Environmental Data Retrieval Standard; for services that exchange the meteorological information as coverages: OGC Web Coverage Service (WCS) Interface Standard – Core, version 2.1; OGC API - Coverages; for services that exchange the meteorological information as features: OGC Web Feature Service 2.0 Interface Standard; OGC API – Features. Note: It is a best practice for new services that exchange meteorological information as features to implement the OGC API – Environmental Data Retrieval Standard.

En-route Significant Weather Information Subscription and Request Service Subscription Interface

SWIM TI profile and interface bindings	profile name	EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile
	profile version	1.1
	selected service interface binding	WS_LIGHT
	selected network interface binding	The service shall use the network bindings of the SWIM Technical Infrastructure (TI) Yellow Profile.
	description

En-route Significant Weather Information Subscription and Request Service Distribution Interface

SWIM TI profile and interface bindings	profile name	EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile
	profile version	1.1
	selected service interface binding	SWIM_TI_YP_1_1_AMQP_MESSAGING
	selected network interface binding	The service shall use the network bindings of the SWIM TIYP.
	description	AMQP 1.0 shall be used to distribute messages as explained in the Publish/Subscribe Push MEP: Implementation Guidance.

Service Interface Protocols and Data Format

DRAFT

Trace

SWIM-DEFN-260

service interface protocols and data format	transport / messaging protocols	The service shall use TLS1.2 or later in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile.
service interface protocols and data format	data format	This is captured at Service Message level (see below). WS_LIGHT does not mandate a data format. The header expresses what is used.

Service Operations

TBD

Trace

SWIM-DEFN-270

Explanatory note

The OGC Web Feature Service 2.0 Interface Standard is used to implement the service operations. It is not the intention to repeat the standardised operations here. However, the table below illustrates how the GetFeature operation would look in the context of this service.

Service operations	operation	operation name
		description
		messages

Service Messages

DRAFT

Explanatory note

The OGC Web Feature Service 2.0 Interface Standard details the basic messages such as request and response messages. It is not the intention to repeat the standardised messages here. The table below provides extra details for the Meteorological Aerodrome Forecast Message.

Trace

SWIM-DEFN-280

service messages	message	name	En-route Significant Weather Information Message
		description	The output message containing the en-route and approach significant meteorological information.
		direction	Out
		data format
	message	reference	to do
	message	description	The standard messages for subscription and subscription management.

En-route Significant Weather Information Message

The output message containing the en-route significant weather information.

to do

Information Definition (Minimum) and (Extended)

DRAFT

Trace

SWIM-DEFN-290, SWIM-DEFN-300

information definition	The service shall offer information available in accordance with Appendix B.

Filter Encoding

DRAFT

Trace

SWIM-DEFN-310

filter encoding

The En-route Signification Weather Information Subscription and Request Service Request Interface shall support the During temporal operator defined in the OGC Filter Encoding 2.0 Encoding Standard.

The En-route Signification Weather Information Subscription and Request Service Request Interface shall support filtering based on the name and ICAO location indicator of the aerodrome of interest..

The En-route Signification Weather Information Subscription and Request Service Request Interface should support filtering based on the operators defined in the OGC Filter Encoding 2.0 Encoding Standard.

The En-route Signification Weather Information Subscription and Request Service Subscription Interface shall allow for the selection of subscription based on clearly defined criteria.

Machine-Readable Service Interface Definition

DRAFT

Trace

SWIM-DEFN-320

Explanatory note

This field is left empty. No machine-readable service interface definition is provided.

machine-readable service interface definition	reference

Model View

DRAFT

Trace

SWIM-DEFN-330

Explanatory note

This field is left empty. No model view is provided.

model view	reference

Abbreviations and Acronyms

DRAFT

Trace

SWIM-DEFN-350

abbreviations and acronyms	abbreviation	code
	abbreviation	term
	abbreviation	code
	abbreviation	term
	abbreviation	code	ATM
	abbreviation	term	Air Traffic Management
	abbreviation	code	ATS
	abbreviation	term	Air Traffic Services
	abbreviation	code	EU
	abbreviation	term	European Union
	abbreviation	code	ICAO
	abbreviation	term	International Civil Aviation Organization
	abbreviation	code	OGC
	abbreviation	term	Open Geospatial Consortium
	abbreviation	code	SESAR
	abbreviation	term	Single European Sky ATM Research
	abbreviation	code	SWIM
	abbreviation	term	System Wide Information Management
	abbreviation	code	TI
	abbreviation	term	Technical Infrastructure
	abbreviation	code	TLS
	abbreviation	term	Transport Layer Security
	abbreviation	code	WFS
	abbreviation	term	Web Feature Service
	abbreviation	code	WFS-TE
	abbreviation	term	Web Feature Service - Temporality Extension

Appendix A: References

TBD

Trace

This is not traced to a requirement.

references	reference	title
		version
		description
		url
		document type
	reference	title
		version
		description
		url
		document type

Appendix B: Information Definition

DRAFT

The message shall include the following meteorological information when relevant:

thunderstorm
- obscured OBSC TS
- embedded EMBD TS
- frequent FRQ TS
- squall line SQL TS
- obscured with hail OBSC TSGR
- embedded with hail EMBD TSGR
- frequent, with hail FRQ TSGR
- squall line with hail SQL TSGR
tropical cyclone
- tropical cyclone with 10-minute mean surface wind speed of ≥17 m/s (34 kt) TC (+ cyclone name)
mountain wave
- severe mountain wave SEV MTW
icing
- severe icing SEV ICE
- severe icing due to SEV ICE (FZRA) freezing rain
turbulence
- severe turbulence SEV TURB
volcanic ash
- volcanic ash VA (+ volcano name, if known)
duststorm
- heavy duststorm HVY DS
sandstorm
- heavy sandstorm HVY SS
radioactive cloud
- RDOACT CLD

Appendix C: Operational Needs

DRAFT

Transversal

Support integration of existing and/or tailored weather information with operational processes to aid decision-making and improve understanding of the operational impact of adverse weather.

By service consumer role

Stakeholder/Role	Description of stakeholder/role	Needs for en-route significant weather information	Notes
CIVIL_AIRSPACE_USER	A generic term designating an organization operating aircraft and its pilots, the flight operations centres (FOC) responsible for the strategic planning of a flight and the entity responsible for the execution of a flight which is traditionally a flight deck.	Generate graphical representations of data in support of responsibilities. Ensure safe operations by responding to changes in the situation. Provide in-flight information updates. Support the operations of search and rescue Require information on unique weather constraints such as turbulence, convection, icing, etc..	This role is recognised in the SESAR Deployment Programme as a recommended service consumer of the aerodrome and en-route services.
MILITARY_AIRSPACE_USER	Airspace User under the authority of a military organisation.	Generate graphical representations of data in support of responsibilities. Ensure safe operations by responding to changes in the situation. Provide in-flight information updates. Support the operations of search and rescue Require information on unique weather constraints such as turbulence, convection, icing, etc..	This role is recognised in the SESAR Deployment Programme as a service consumer of the aerodrome and en-route services. Although the military is not obliged to use SWIM, they currently rely on civil weather information and therefore it will be essential for their operations to use SWIM-services.
CIVIL_AIR_NAVIGATION_SERVICE_PROVIDER	Any public or private entity providing air navigation services for general air traffic.	Ensure safe operations by responding to changes in the conditions of the airspace infrastructure. Require information on unique weather constraints such as turbulence, convection, icing, etc..	This role is recognised in the SESAR Deployment Programme as a service consumer of the aerodrome and en-route services. The real-time aspects will have an impact on the service architecture.
MILITARY_AIR_NAVIGATION_SERVICE_PROVIDER	Any public or private entity providing air navigation services for military air traffic.	Ensure safe operations by responding to changes in the conditions of the airspace infrastructure. Require information on unique weather constraints such as turbulence, convection, icing, etc..	This role is recognised in the SESAR Deployment Programme as a service consumer of the aerodrome and en-route services. Although the military is not obliged to use SWIM, they currently rely on civil weather information and therefore it will be essential for their operations to use SWIM-services.
AIR_TRAFFIC_SERVICE_PROVIDER	A generic term meaning variously, flight information service, alerting service, air traffic advisory service, air traffic control service (area control service, approach control service or aerodrome control service).	Support situational awareness of ACC units regarding observed and/or forecasted significant weather Support capacity planning for APP and TWR units to increase separation due to expected e.g. thunderstorms, strong winds, low visibility,…	This role is recognised in the SESAR Deployment Programme as a service consumer of the aerodrome and en-route services under the term of ANSP.
REGULATED_METEOROLOGICAL_SERVICE_PROVIDER	An office designated to provide meteorological service for international air navigation.	MET providers shall have the possibility and ability to consume needed information to perform their tasks e.g. flight briefing or to update their forecast products based on the latest weather information	This role is not recognised by the SESAR Deployment Program as a service consumer. However, it is recognised in ATM Master Plan (https://atmmasterplan.eu/data/enablers/20417016.) Moreover, looking at the EU Reg. 2017/373, a MET Service Provider has to support stakeholders and for that MET-data is needed from other MET-providers. Also such MET-data is needed for their own purpose to evaluate the correctness of forecasts.
AERONAUTICAL_INFORMATION_SERVICE_PROVIDER	A service established within the defined area of coverage responsible for the provision of aeronautical information/data necessary for the safety, regularity and efficiency of air navigation.	Not applicable
COMMUNICATION_NAVIGATION_AND_ SURVEILLANCE_SERVICE_PROVIDER	A provider of CNS services.	Not applicable	Some equipment e.g. ground radar at airports have to be shut down if the wind rises above a certain windspeed threshold to avoid damage
PROVIDER_OF_DATA_SERVICES	A public or private entity responsible for the management of a Data Service Provision (e.g. to one or several Virtual Centre).	In case a provider of data services also offers/handles MET data, the provider shall have the possibility and ability to receive the data needed
NETWORK_MANAGER	The organization responsible for enabling the optimum use of airspace and ensure that Airspace Users can operate preferred trajectories while allowing maximum access to airspaces and air navigation services.	MET providers shall provide dedicated forecast product(s) to the NM in order to support daily operations. Mainly this forecast is used for pre-planning the next day, raising awareness of the NM on any possible restrictions/slotting due to hazardous weather	This role is recognised (as ATFM) in the SESAR Deployment Programme as a service consumer of the en-route services.
AIRPORT_OPERATOR	The civilian or military agency, group or individual which exercises control over the operations of the civil airport or military airfield.	Not applicable. Currently there are special products for local warnings. Partly via the MET-Report, but also via dedicated warning messages (strong winds, temperatures below 0°, thunderstorms,….).	This role is recognised in the SESAR Deployment Programme as a service consumer of the aerodrome services.
AIRSIDE_GROUND_HANDLER	A stakeholder involved in the services necessary for an aircraft's arrival at, and departure from, an airport, other than air traffic services.	Provide information to ground handlers especially in regard to hazardous weather which might affect their operations (thunderstorms, freezing rain,..)
MILITARY_DEFENCE_CENTRE	A military defence centre. Note: these centres, e.g., check for diplomatic clearance.	Not applicable

En-route Significant Weather Information Subscription and Request Service - Service Definition

Service Definition Identification

Service Identification

Service Abstract

Service Definition Provider

Geographical Extent of Information

Service Categories

Service Standard Reference

Operational Environment

Service Functions

Service Access and Use Conditions

Security Constraints

Quality of Service

Quality of Data

Source of Information

Service Validation Information

Application Message Exchange Pattern

Service Behaviour

Synchronous Request/Reply

Service Monitoring

Service Interfaces

SWIM TI Profile and Interface Bindings

En-route Significant Weather Information Subscription and Request Service Request Interface

En-route Significant Weather Information Subscription and Request Service Subscription Interface

En-route Significant Weather Information Subscription and Request Service Distribution Interface

Service Interface Protocols and Data Format

Service Operations

Service Messages

En-route Significant Weather Information Message

Information Definition (Minimum) and (Extended)

Filter Encoding

Machine-Readable Service Interface Definition

Model View

Abbreviations and Acronyms

Appendix A: References

Appendix B: Information Definition

Appendix C: Operational Needs

Transversal

By service consumer role