METEOROLOGICAL DL SERVICES

1
METEOROLOGICAL DL SERVICES
2
Service Identification Two Approaches

• Characteristic of Data Link
• Uplink
• Downlink
• Crosslink
• Purpose of Service

3
Uplink (broadcast and two-way)

• Information
• existing products in Annex 3
• existing/planned graphical/textual products
  including
• Lightning (sferics)
• new area/volume products (e.g., gridded/
  spectral)
• new flight path products
• advanced FIS products such as windshear alerts
  and wake vortex products
• space wx
• volcanic ash

4
Uplink (broadcast and two-way)

• Service Characteristics
• Animation
• Lossy Compression
• Overlay or integration of satellite, radar, WAFS,
  etc products
• Human factors
• all except colour and symbology
• including colours and symbology ??

5
Downlink

• Information
• 4D position
• wind, temps
• Water vapor
• Turbulence (e.g., EDR)
• icing
• refractive index of atmosphere (temp and water
  vapor)
• other (e.g., environmental, JPDO)
• tops
• ride

6
Downlink

• Tasks
• Identify existing standards Arinc 620, ICAO
  Annex 3, DO252 AMDAR three versions
• Assess differences between existing standards and
  existing systems (e.g. TAMDAR, UAT)
• Consider command and control
• Consider Semi-Auto PIREPS

7
Crosslink

• Information (consider differences between remote,
  e.g., oceanic, applications)
• 4D position
• wind
• temps
• Turbulence (e.g., EDR)
• icing
• windshear
• wake vortex
• Semi-Auto PIREPS

8
Crosslink

• Relay service
• ISSUE Do we need to consider requirements for
  use of data on ground beyond what is covered in
  the OSED?

9
Purpose of Service Approach

• Wx information to support in-flight planning or
  re-planning for hazard avoidance and/or flight
  efficiency
• Wx information to support avoidance of escape
  from hazards and compliance with ATC
  contracts/directions