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AMDAR Observing System Resources

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  1. WMO AMDAR References
  2. AMDAR System Standards
  3. AMDAR Programme Development
  4. News & Newsletters
  5. WMO ABO Forums
  6. Papers and References

AMDAR Papers & References

WMO AMDAR References, Manuals and Guides

Reference Description & Comments
AMDAR Reference Manual WMO-No. 958, 2003

Aircraft Meteorological Data Relay (AMDAR) Reference Manual- Developed by the WMO AMDAR Panel and published by WMO in 2003. Most material will be migrated into the WIGOS regulatory material and the Guide on Instruments and Methods of Observation, WMO-No 8.

WMO Manual on the Global Observing System, WMO-No- 544

Sections relevant to Aircraft-based Observations:

  • PART III, Section 2.6 Aircraft Meteorological Stations
WMO Guide to the Global Observing System, WMO-No. 488

Sections relevant to Aircraft-based Observations:

  • PART III, Section 3.4 Aircraft Meteorological Stations
WMO Guide to Meteorological Instruments and Methods of Observations, WMO-No. 8 (2008, Update 2010)

New Provisional Update to CIMO Guide 2014 for aircraft-based observations is available here:

CIMO Guide 2008, Update 2010 - Sections relevant to Aircraft-based Observations:

AMDAR Panel Flyer Aircraft Meteorological DAta Relay, The International AMDAR Program - Developed by the WMO AMDAR Panel and published by DWD, this publication is somewhat dated and does contain non-technical information that is no longer current and correct but the technical information is still relevant and useful.

AMDAR System Standards

Standard Description & Comments
NewAMDAR Onboard Software Functional Requirements Specification (AOSFRS), Version 1.1 (CIMO, IOM Report No. 115)

This specification provides the primary WMO meteorological-based specification for AMDAR onboard software.

The AOSFRS defines the recommended formats for AMDAR data uplink and downlink for ACARS applications of AMDAR onboard software. This specification will be consistent with and provide the functional requirements for the AEEC 620-8 Meteorological Report Version 6.

AOSFRS Version 1.1 is an update of version 1.0 and has the following primary elements and additions:

  • Contains several additional recommended downlink and uplink formats (see Appendix A) that will provide consistency with the AEEC ARINC 620 Meterological Report Version 6 (ARINC 620-8)
  • Several extensions have been made to appendices to provide further information and clarity for applications developers.
  • Several corrections have been made to various sections.

Changes made are documented within Appendix H, AOSFRS Version Control.

The AOSFRS is published and will be maintained as a CIMO, Instruments and Observing Methods (IOM) technical report.

AMDAR Onboard Software Functional Requirements Specification (AOSFRS), Version 1.0 (CIMO, IOM Report No. 114)

The AOSFRS defines a new, more efficient and recommended format for AMDAR data downlink for ACARS applications, superceding the AAA software specification.

This specification is superceded by AOSFRS version 1.1.

The original specification was drafted by a consultant under a WMO Special Services Agreement (SSA) under a Description of Work, Compilation of a Generic Specification of Functional Requirements for AMDAR Software, developed by the AMDAR Panel.

AEEC 620-7 Data Link Ground System Standard and Interface Specification (DGSS/IS) from AEEC

This document contains the specifications of the AMDAR onboard software, Meteorological Report (versions 1 to 5), which will be updated with version 6 in 2014.

This specification defines recommended datalink formats for one of two existing WMO developed format standards for AMDAR onboard software. The other is the AOSFRS, which superceded the AAA specifications.

Relevant sections for AMDAR are:

  • Chapter 4
    • Section 4.3.9: Command uplink formats for Met. Report versions 2 and 3;
    • Section 4.3.10: Command uplink format for Met. Report version 4;
    • Section 4.3.11: Command uplink format for Met. Report version 5;
  • Chapters 5
    • Section 5.3.13.1 : Met. Report downlink format version 1;
    • Section 5.3.14.2 : Met. Report downlink format version 2;
    • Section 5.3.14.3: Met. Report downlink format version 3;
    • Section 5.3.14.4: Met. Report downlink format version 4;
    • Section 5.3.14.5: Met. Report downlink format version 5;
  • Appendix G: Uplink Control Programming Notes for version 4 Onboard Software - relevant to Met. Report versions 4 and 5;
  • Appendix H: Meteorological Report Compression - describes the Base 40 character compression technique and the downlink compressed formats for Met. Report versions 4 and 5.

A copy of the latest specification (620-7) can be purchased from the ARINC Store.

AMDAR AAA Version 3.0 Software Requirements Specification, Bureau of Meteorology Australia

This document provides the onboard AMDAR software specification for ACARS Aircraft AMDAR Version 3 (AAA V3).

AAA V3 software applications have been developed by AirDatec and implemented for Qantas and Jetstar Airbus and Boeing fleets, South African Airways Airbus fleets and British Airways fleets.

The AAA specification series is now superseded by the AOSFRS (see above).

AAA AMDAR Software Developments – Technical Specification, EUMETNET AMDAR (AAA V2)

This document provides the onboard AMDAR software specification for ACARS Aircraft AMDAR version 2 (AAA V2).

AAA V2 software applications were developed for British Airways and South African Airways (SAA) by AirDatec but were installed on the SAA Airbus fleets only, which have subsequently been updated to AAA V3.

Software Requirements Specification for the ASDAR Project This document by Matra Marconi Space provides the specifications for the software component of the ASDAR system. The ACARS Aircraft AMDAR Version 1 (AAA V1) onboard software applications that were developed by Qantas and British Airways were based on this specification, although there is no existing AAA V1 specification document.

AMDAR Programme Development

Document/Reference Description & Comments
NewRequirements for the Implementation and Operation of an AMDAR Programme (WIGOS Technical Report, 2014-2, March 2014) This document provides guidance to WMO Members on the requirements for the establishment and operation of a national or regional AMDAR observing system in collaboration with one or more partner commercial airlines. It has been contributed to and reviewed by observing system experts of WMO Members, including members of the WMO Commission for Basic Systems (CBS) Expert Team on Aircraft-Based Observing Systems (ET-ABO).
New The Benefits of AMDAR to Meteorology and Aviation (WIGOS Technical Report 2014-1, Version 1, Jan 2014)

The document is intended for the use of WMO Members as guidance material in assisting in determining the possible benefits of the AMDAR observing system as an operational component of their national meteorological observing systems supporting their meteorological and hydrological programmes and applications. It also contains information that may be used, provided or conveyed to aviation collaborators to convince them of the benefits of participation in the AMDAR programme.

Members may contact the Secretariat if they would like a Word copy of this document to enable use of the material for the development of business cases for airline industry particpation in the AMDAR programme.

AMDAR Coverage & Targeting for Future Airline Recruitment, Report & Appendix, February 2013

Over 2012, the AMDAR Panel & CBS Expert Team on Aircraft-based Observations defined the Terms of Reference for a Study on AMDAR Coverage and Targeting for Future Airline Recruitment. The work was undertaken by an aviation consultant under a WMO Special Services Agreement and the resulting report will form the basis and be used as a strategic tool in endeavours to expand and enhance global AMDAR coverage.

The report and appendix are tabled at the link and can be downloaded from the FTP site in whole or in part.

Partnering with the Aviation Industry - Aircraft Meteorological Data Relay (AMDAR)

WMO Flyer Series: Partnerships in Weather Climate & Water for Development

[English] [Spanish] [French]

Non-Traditional Approaches to Weather Observations in Developing Countries

Via International Finance Corporation.

By John T. Snow, PhD, CCM Principal, Snow & Associates and Regents' Professor of Meteorology The University of Oklahoma

See Section 6.1: Aircraft Instrumentation for Soundings

Aircraft Meteorological DAta Relay, The International AMDAR Program - Developed by the WMO AMDAR Panel and published by DWD, this publication is somewhat dated and does contain non-technical information that is no longer current and correct but the technical information is still relevant and useful.

AMDAR/ARINC620-Compatible Hardware and Software
Request for Details

This document was developed in consultation with avionics specialists and provides a list of onboard avionics systems that are known or expected to be capable of hosting AMDAR onboard software applications.

It is recommended that prospective AMDAR Programme developers provide this document to airlines to complete and return it to the Secretariat for further advice.

The CBS Implementation Plan for the Evolution of the Global Observing System has been developed "...to outline the key activities to be implemented during the period 2012 to 2025 aiming at maintaining and developing all WMO component observing systems..."

Section 5.3.1.3 (Aircraft Meteorological Stations) in particular provides Actions G19 to G24 that identify the key developmental actions and strategies for global, regional and national AMDAR programme development.

The document is available in English, French, Spanish and Russian.

News & Newsletters

In 2012, the Secretariat developed an AMDAR News & Events site and the WMO AMDAR Panel began producing a newsletter titled "WMO AMDAR Panel Newsletter". Four volumes were compiled in 2012. At it's 15th and final Session, the Panel recommended that the CBS Expert Team on Aircraft-based Observations endeavor to continue to produce the newsletters on a biannual basis.

The Newsletter are available at the News & Events site.

The Newsletters are also posted to the World Meteorological Organization Aircraft Observations News Public Google Groups site.

The News & Events site also hosts pages for the posting of WMO information on Aircraft-based Observations and AMDAR under the categories Events & Latest News. Both these pages are available under the web feed format, Rich Site Summary (RSS):

RSS   Latest News

RSS  Events

WMO ABO Forums & Email Groups

In addition to the News & Newsletters site, WMO also manages and hosts the following additional forums associated with operation of the Aircraft-based and AMDAR observing systems:

Forum Category/Type Description
AMDAR Projects and Collaboration
Online Site

Online Google Site available to AMDAR Focal Points. The site contains information and resources for operational and prospective WMO AMDAR programme developers that includes:

  • WMO ABO Work Program projects;
  • Additional presentations, documents and papers related to aircraft-based and AMDAR observations and observing systems; and
  • Additional information on meetings.

Access is provided to AMDAR Focal Points on request via email notification.

WMO Aircraft Observations Focal Points email list Email list and Google Groups Forum

WMO Google Groups email list for WMO Aircraft-based Observation Focal Points.

Focal Points are added to this group by the Secretariat.

The online Google Groups forum is available here, for those members that register their membership email address via a Google Account.

WMO Aircraft Observations Operational Programmes Email list and Google Groups Forum

WMO Google Groups email list for WMO Aircraft-based Observation Focal Points with operational AMDAR programmes.

Focal Points are added to this group by the Secretariat.

The online Google Groups forum is available here, for those members that register their membership email address via a Google Account.

WMO Aircraft Observations Data Monitoring email list Email list and Google Groups Forum

WMO Google Groups email list providing WMO Members with information on aircraft-based and AMDAR data quality monitoring. The forum is used for posting of monthly data quality monitoring reports and ad hoc discussion on data quality issues.

The forum is available to AMDAR Focal Points and GTS users and managers of aircraft-based observational data.

Members are added to the Google Group email list by the Secretariat upon application. AMDAR Focal Points are made members of this group.

It is recommended that NMHSs provide a group email alias for membership of this group so that individual membership is controlled by the NMHS.

The online Google Groups forum is available here, for those members that register their membership email address via a Google Account.

AMDAR Papers and References

A site is being constructed for provision of public papers and references relating to the AMDAR observing system and will be available from the link above on this page.

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