{
    "informationServiceDescription": {
        "title": "LHMS - SIGMET in IWXXM",
        "referenceDate": "2025-12-23",
        "edition": "1.0",
        "serviceAbstract": "<p>The service provides the latest SIGMET reports in IWXXM for Vilnius FIR/UIRs in compliance with ICAO Annex 3, PANS-MET and EU Implementing Regulations. Retrieval is available via (1) an OGC API - Environmental Data Retrieval (EDR) endpoint and (2) AMQP 1.0 publish/subscribe where the IWXXM payload and message headers conform to the EUROCONTROL SWIM Technical Infrastructure Yellow Profile (Messaging).</p>",
        "serviceIdentification": {
            "name": "LHMS - SIGMET in IWXXM",
            "version": "1.0"
        },
        "serviceProvider": {
            "name": "Lithuanian hydrometeorological service",
            "description": "<p>Lithuanian hydrometeorological service under the Ministry of Environment (LHMS) is&nbsp;designated&nbsp;meteorological service provider&nbsp;for International Air Navigation&nbsp;within the Vilniaus Flight Information Region&nbsp;i<strong>n accordance with&nbsp;ICAO Annex 3&nbsp;and Commission Implementing Regulation (EU) No. 2017/373.</strong><br>&nbsp;</p><p>LHMS is responsible for:</p><p>\u2002\u2002\u2002\u2002provision of aerodrome forecasts and warnings</p><p>\u2002\u2002\u2002\u2002provision of SIGMET, AIRMET, special air-reports, area forecasts</p><p>\u2002\u2002\u2002\u2002provision of meteorological information to ATS and search and rescue units</p><p>\u2002\u2002\u2002\u2002provision of consultations to flight crew members and other flight operations personnel</p><p>\u2002\u2002\u2002\u2002provision and distribution of pre-flight meteorological information and flight documents</p><p>\u2002\u2002\u2002\u2002weather observing and reporting service at Vilnius, Kaunas, Palanga aerodromes</p><p>\u2002\u2002\u2002\u2002provision of aerodrome climatological information. &nbsp;</p>",
            "pointOfContact": [
                {
                    "name": "SWIM.METEO contact group",
                    "role": "Data Provider",
                    "contactInformation": [
                        {
                            "type": "EMAIL",
                            "address": "swim@meteo.lt"
                        },
                        {
                            "type": "PHONE",
                            "address": "+370 648 06 320"
                        },
                        {
                            "type": "URL",
                            "address": "https://www.meteo.lt"
                        }
                    ]
                }
            ],
            "abbreviation": "LHMS"
        },
        "serviceCategorisation": {
            "businessActivityType": [
                "AERODROME_OPERATION",
                "AIRSPACE_ORGANISATION_AND_MANAGEMENT",
                "INFORMATION_MANAGEMENT",
                "SERVICE_DELIVERY_MANAGEMENT"
            ],
            "intendedConsumer": [
                "AIR_TRAFFIC_SERVICE_PROVIDER",
                "CIVIL_AIR_NAVIGATION_SERVICE_PROVIDER",
                "CIVIL_AIRSPACE_USER",
                "MILITARY_AIR_NAVIGATION_SERVICE_PROVIDER",
                "MILITARY_AIRSPACE_USER",
                "PROVIDER_OF_DATA_SERVICES",
                "REGULATED_METEOROLOGICAL_SERVICE_PROVIDER"
            ],
            "informationCategory": [
                "METEOROLOGICAL_INFORMATION_EXCHANGE"
            ],
            "applicationMessageExchangePattern": [
                {
                    "name": "REQUEST_REPLY"
                },
                {
                    "name": "PUBLISH_SUBSCRIBE_WITH_PUSH_MECHANISM"
                }
            ],
            "geospatialCategorisation": {
                "fir": [
                    "EYVI"
                ],
                "countryCode": [
                    "LT"
                ],
                "description": "The dataset is valid for Lithuania (Vilnius FIR/EYVI)."
            },
            "other": [
                {
                    "name": "Service Type: METEOROLOGICAL_FEATURE_ACCESS_SERVICE",
                    "value": "METEOROLOGICAL_FEATURE_ACCESS_SERVICE",
                    "categorisationScheme": {
                        "url": "http://reference.swim.aero/information-services/service-categories/CodeServiceType.html"
                    }
                },
                {
                    "name": "Service Type: METEOROLOGICAL_INFORMATION_SUBSCRIPTION_SERVICE",
                    "value": "METEOROLOGICAL_INFORMATION_SUBSCRIPTION_SERVICE",
                    "categorisationScheme": {
                        "url": "http://reference.swim.aero/information-services/service-categories/CodeServiceType.html"
                    }
                }
            ],
            "lifeCycle": [
                {
                    "lifeCycleStage": "OPERATIONAL",
                    "from": "2025-12-31"
                }
            ]
        },
        "generalDescription": {
            "serviceSupport": [
                {
                    "name": "SWIM.METEO contact group",
                    "contactInformation": [
                        {
                            "type": "EMAIL",
                            "address": "swim@meteo.lt"
                        }
                    ]
                }
            ],
            "operationalEnvironment": {
                "operationalNeeds": [
                    {
                        "name": "Operational Needs",
                        "description": "This service contributes to fulfilling operational needs as defined in Commission Implementing Regulation (EU) 2017/373 and ICAO Annex 3. It supports the EU Implementing Regulation 2021/116 - Common Project One."
                    },
                    {
                        "name": "Information Exchange Requirements",
                        "description": "The information currently included in SIGMET as defined in Commission Implementing Regulation (EU) 2017/373, ICAO Annex 3 Amendment 82, and PANS-MET."
                    }
                ],
                "capabilities": [
                    {
                        "name": "Capabilities",
                        "description": "The service provides high quality, up-to-date, trusted, regulated meteorological information in digital form for use by service consumers within the aviation domain."
                    }
                ]
            },
            "functionality": [
                {
                    "name": "Distribute Data",
                    "description": "The service distributes the data according to published topics.",
                    "realWorldEffect": "Information has been shared; the service consumer gets the requested data."
                },
                {
                    "name": "Request Data",
                    "description": "The consumer can request data from the service using an OGC API - EDR endpoint.",
                    "realWorldEffect": "Information has been shared; the service consumer gets the requested data."
                },
                {
                    "name": "Receive Published Data",
                    "description": "The consumer can receive data via AMQP 1.0. Messages follow the SWIM TI Yellow Profile (Messaging).",
                    "realWorldEffect": "Data is received upon publication."
                }
            ],
            "accessAndUseConditions": [
                {
                    "name": "General Terms and Conditions of Business",
                    "type": "LEGAL_CONSTRAINT",
                    "description": "Terms and conditions are provided by LHMS upon request."
                },
                {
                    "name": "Customization",
                    "type": "SERVICE_POLICY",
                    "description": "Within the given constraints, the user can customize the service to individual needs if applicable."
                },
                {
                    "name": "Information Retainment",
                    "type": "SERVICE_CONSUMPTION_CONSTRAINT",
                    "description": "According to ICAO Annex 3, meteorological information is retained for a period of at least 30 days from the date of issue."
                },
                {
                    "name": "Access",
                    "type": "SECURITY_CONSTRAINT",
                    "description": "Access is limited to authorized users per SWIM TI Yellow Profile."
                },
                {
                    "name": "Encryption",
                    "type": "SECURITY_CONSTRAINT",
                    "description": "Communication is encrypted per SWIM TI Yellow Profile."
                },
                {
                    "name": "Signature",
                    "type": "SECURITY_CONSTRAINT",
                    "description": "The requested information may contain a digital signature using SHA-256 or stronger."
                }
            ],
            "qualitiesOfService": {
                "performance": [
                    {
                        "name": "Performance",
                        "description": "Actual pre-operational status."
                    }
                ],
                "reliability": [
                    {
                        "name": "Reliability",
                        "description": "Actual pre-operational status."
                    }
                ],
                "security": [
                    {
                        "name": "Security",
                        "description": "SWIM TI Yellow Profile-compliant security controls (confidentiality, integrity, authentication)."
                    }
                ]
            },
            "dateInOperation": "2025-12-31",
            "validation": [
                {
                    "type": "SELF_VALIDATION",
                    "description": {
                        "evidence": "Service tested by LHMS"
                    }
                }
            ],
            "abbreviations": [
                {
                    "name": "AIRM",
                    "description": "ATM Information Reference Model"
                },
                {
                    "name": "AMQP",
                    "description": "Advanced Queueing Message Protocol (1.0) \u00e2\u0080\u0093 per SWIM TI Yellow Profile Messaging"
                },
                {
                    "name": "ATC",
                    "description": "Air Traffic Control"
                },
                {
                    "name": "ATM",
                    "description": "Air Traffic Management"
                },
                {
                    "name": "EATMN",
                    "description": "Europeeean Air Traffic Management Network"
                },
                {
                    "name": "LHMS",
                    "description": "Lithuanian hydrometeorological service under the Ministry of Environment"
                },
                {
                    "name": "HTTP",
                    "description": "Hypertext Transfer Protocol"
                },
                {
                    "name": "ICAO",
                    "description": "International Civil Aviation Organization"
                },
                {
                    "name": "IER",
                    "description": "Information Exchange Requirement"
                },
                {
                    "name": "IR",
                    "description": "Implementation Rules"
                },
                {
                    "name": "ISRM",
                    "description": "Information Service Reference Model"
                },
                {
                    "name": "IWXXM",
                    "description": "ICAO Meteorological Information Exchange Model"
                },
                {
                    "name": "METAR",
                    "description": "Meteorological Aerodrome Report"
                },
                {
                    "name": "NWS",
                    "description": "National Weather Service"
                },
                {
                    "name": "OGC",
                    "description": "Open Geospatial Consortium"
                },
                {
                    "name": "PCP",
                    "description": "Pilot Common Project"
                },
                {
                    "name": "REQ",
                    "description": "Requirement"
                },
                {
                    "name": "WMO",
                    "description": "World Meteorological Organization"
                },
                {
                    "name": "SIGMET",
                    "description": "Significant meteorological phenomena"
                },
                {
                    "name": "TAF",
                    "description": "Terminal Aerodrome Forecast"
                },
                {
                    "name": "AMO",
                    "description": "Aerodrome Meteorological Office"
                },
                {
                    "name": "AMS",
                    "description": "Aeronautical Meteorological Station"
                },
                {
                    "name": "EDR",
                    "description": "Environmental Data Retrieval (OGC API - EDR)"
                },
                {
                    "name": "MEP",
                    "description": "Message Exchange Pattern"
                },
                {
                    "name": "PANS-MET",
                    "description": "ICAO Procedures for Air Navigation Services - Meteorology"
                },
                {
                    "name": "TIYP",
                    "description": "Technical Infrastructure Yellow Profile"
                },
                {
                    "name": "TI",
                    "description": "Technical Infrastructure"
                }
            ]
        },
        "informationDescription": {
            "informationDefinition": [
                {
                    "name": "SIGMET (Significant Meteorological Information)",
                    "definition": "A digital aeronautical meteorological warning for en-route aircraft concerning specified significant weather phenomena, encoded and exchanged using IWXXM.",
                    "airmCorrespondence": "AIRM 1.0.0 :: SIGMET \u00e2\u0080\u0094 correspondence and mapping notes: https://airm.aero/developers/icao-wxxm-3.0.0-to-airm-1.0.0-index",
                    "datatype": "IWXXM 3.x SIGMET",
                    "cardinality": "0..*",
                    "constraints": "IWXXM version 2023-1 (https://schemas.wmo.int/iwxxm/2023-1/iwxxm.xsd). Payload is raw XML in AMQP messages and EDR responses; no size constraints.",
                    "path": "/sigmet"
                }
            ],
            "filtering": {
                "capability": [
                    {
                        "name": "Filtering Capabilities (EDR)",
                        "description": "Filtering is exposed through OGC API - EDR query parameters and collections, including spatial, temporal, and parameter subsetting of IWXXM-derived attributes.",
                        "reference": {
                            "url": "https://ogcapi.ogc.org/edr/"
                        }
                    },
                    {
                        "name": "Filtering Capabilities (AMQP)",
                        "description": "Topic-based filtering is available through the broker\u00e2\u0080\u0099s topic hierarchy. AMQP 1.0 filters (e.g., ICAO location identifier) can be applied via standard message headers as defined by the message schema."
                    }
                ]
            },
            "sourceOfInformation": "The service provider ensures that the data offered within this service is created by LHMS, a REGULATED_METEOROLOGICAL_SERVICE_PROVIDER."
        },
        "technicalDescription": {
            "technicalConstraint": [
                {
                    "name": "Topic Structure",
                    "description": "Messages are published under weather.aviation.{taf,metar,sigmet}. This covers all messages in the Lithuania FIR."
                },
                {
                    "name": "Payload Encoding",
                    "description": "IWXXM content is carried as plain text XML (not gzipped)."
                },
                {
                    "name": "Flow Control and Limits",
                    "description": "Default link credit and connection limits are to be confirmed; values will be documented in narrative connection documentation when available."
                }
            ],
            "serviceMonitoring": {
                "monitoringDescription": "LHMS IT components are monitored with 24/7 maintenance."
            },
            "behaviour": [
                {
                    "name": "Typical Request/Reply Behaviour",
                    "description": "The request is sent from the consumer to the EDR service, which processes the request and returns the SIGMET IWXXM payload. The service follows OGC API - EDR behaviour.",
                    "reference": {
                        "description": "OGC API - EDR",
                        "url": "https://ogcapi.ogc.org/edr/"
                    }
                },
                {
                    "name": "Typical Data Distribution Behaviour",
                    "description": "The service sends data to consumers when available and matching their connection parameters using AMQP 1.0 per SWIM TI Yellow Profile Messaging."
                }
            ]
        },
        "references": {
            "implementedStandard": [
                {
                    "title": "OGC API - Environmental Data Retrieval (EDR)",
                    "version": "1.1.0",
                    "description": "OGC API - Environmental Data Retrieval",
                    "standardType": "SERVICE_STANDARD",
                    "conformanceStatement": "is conformant"
                },
                {
                    "title": "EUROCONTROL SWIM Technical Infrastructure - Yellow Profile (Messaging, AMQP 1.0)",
                    "version": "2.0",
                    "description": "Advanced Message Queuing Protocol 1.0 per SWIM TI Yellow Profile",
                    "standardType": "EUROCONTROL_SPECIFICATION_FOR_SWIM_TECHNICAL_INFRASTRUCTURE",
                    "conformanceStatement": "is conformant"
                }
            ]
        },
        "serviceInterface": [
            {
                "name": "EDR Request",
                "description": "The interface is used to receive the data via OGC API - EDR.",
                "schema": {
                    "url": "https://www.meteo.lt"
                },
                "provisionSide": "PROVIDER_SIDE",
                "operations": [
                    {
                        "name": "EDR operations",
                        "description": "Standard EDR retrieval operations (collection discovery, position/area/trajectory queries, temporal subsetting).",
                        "messages": [
                            {
                                "name": "EDR Request",
                                "direction": "IN"
                            },
                            {
                                "name": "EDR Response",
                                "direction": "OUT"
                            }
                        ]
                    }
                ],
                "messages": [
                    {
                        "name": "EDR Response",
                        "description": "Response payload structure and parameters are defined by the OpenAPI document.",
                        "schema": {
                            "url": "https://www.meteo.lt"
                        }
                    }
                ],
                "endpoints": [
                    {
                        "name": "LHMS EDR API",
                        "description": "Connection between the service provider and the consumer via OGC API - EDR. Contact LHMS SWIM.METEO group for credentials and collection details.",
                        "url": "https://swim.meteo.lt:8443"
                    }
                ],
                "serviceInterfaceBinding": {
                    "name": "SWIM_TI_YP_1_1_WS_LIGHT",
                    "description": "HTTP(S) REST binding per SWIM Technical Infrastructure Yellow Profile."
                },
                "networkInterfaceBinding": {
                    "name": "IPV4_SECURE_UNICAST",
                    "description": "Service supports IPv4 secure unicast and IPv6 secure unicast over TLS (mTLS per policy)."
                },
                "messageExchangePattern": "SYNCHRONOUS_REQUEST_RESPONSE"
            },
            {
                "name": "AMQP Push Service",
                "description": "The interface is used to receive published data via AMQP 1.0 per SWIM TI Yellow Profile Messaging.",
                "schema": {
                    "url": "https://raw.githubusercontent.com/iblsoft/swimdemo/acf23736bca2a55a0184988acbcd52cd8f8b88c3/schema/cp1/sigmet.json"
                },
                "provisionSide": "PROVIDER_SIDE",
                "operations": [
                    {
                        "name": "dataDelivery",
                        "description": "The IWXXM payload is delivered directly in the AMQP message or via reference to an EDR resource.",
                        "messages": [
                            {
                                "name": "dataDelivery",
                                "direction": "OUT"
                            }
                        ]
                    }
                ],
                "messages": [
                    {
                        "name": "dataDelivery",
                        "description": "AMQP message contract including headers/properties and IWXXM payload shape for SIGMET.",
                        "schema": {
                            "url": "https://raw.githubusercontent.com/iblsoft/swimdemo/acf23736bca2a55a0184988acbcd52cd8f8b88c3/schema/cp1/sigmet.json"
                        }
                    }
                ],
                "endpoints": [
                    {
                        "name": "AMQPBrokerLHMS",
                        "description": "Connection for AMQP 1.0 notifications and payload delivery according to the consumer\u00e2\u0080\u0099s connection.",
                        "url": "amqps://swim.meto.lt:5671"
                    }
                ],
                "serviceInterfaceBinding": {
                    "name": "SWIM_TI_YP_1_1_AMQP_MESSAGING",
                    "description": "Binding aligned with EUROCONTROL SWIM Technical Infrastructure Yellow Profile (Messaging)."
                },
                "networkInterfaceBinding": {
                    "name": "IPV4_SECURE_UNICAST",
                    "description": "Service supports IPv4 secure unicast and IPv6 secure unicast over TLS (mTLS per policy)."
                }
            }
        ]
    }
}