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WIS, TDCF, XML
Steve ForemanChief Data Representation, Metadata and Monitoring
WMO; WIS
Contents of presentation
Information exchange through WMOWMO Information SystemWMO data representationSteps to take
2
Information Exchange through WMO
3
Information needs are growing…
4
GAW
Forecasts
GCW
Ash Tsunami
GFCS
Aviation
HealthWHYCOSSpace
Weather
Information exchange through WMO
5
WMO Information System (WIS)
6
WMO Information System aims to…
Increase data visibilityBroaden data accessSimplify data use
7
From the GTS …
8
… to WIS
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Adding data to WIS
WMO Pizza ProgrammeDCPC
10
Discovery, Access, Retrieval
DCPC
Passes product to user
DCPC
Passes product to user
GISC
DCPC
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User
•Searches catalogue at GISC
•Asks GISC/DCPC for product
User
•Searches catalogue at GISC
•Asks GISC/DCPC for productDCPC
Passes WIS metadata to GISC
DCPC
Passes WIS metadata to GISC
1
2
3
WMO data representation
12
WMO data representation
185 Members6 official languages8 Technical Commissions
13
Right!Geof Sheppard
Data representations
Traditional Alphanumeric Codes
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Strength:
•Independent of language
•Compact
Weakness:
•Difficult to change
•No version control
Strength:
•Independent of language
•Compact
Weakness:
•Difficult to change
•No version control
Data representations
Traditional Alphanumeric CodesTable Driven Code Forms
15
Strength:
•Flexible
• Add new types of data
•Very compact for large data
Weakness:
•Complex to understand
• Use a computer!
Strength:
•Flexible
• Add new types of data
•Very compact for large data
Weakness:
•Complex to understand
• Use a computer!
TAC
TDCF
XML
Data representations
Traditional Alphanumeric CodesTable Driven Code FormsModel Driven Representations
16
Strength:
•Can combine with other disciplines
Weakness:
•Need governance
Strength:
•Can combine with other disciplines
Weakness:
•Need governance
TAFMETAR/SPECI
SIGMET
ICAO Annex 3 / WMO No. 49 II
Meteorological Service for International Air Navigation
Digital aeronautical information management; Amendment 76 to ICAO Annex 3
WMO No. 306 Vol I.1Manual on Codes
Part A – Alphanumeric Codes
Amendment 76 (2013) to ICAO Annex 3 shall, for states in a position to do so to, permit bilateral exchange of OPMET data
via XML
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Aviation XML
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TAFMETAR/SPECISIGMETIWXXM SAF
IWXXM (ICAO Weather Information Exchange Model): formal representation of ICAO Annex 3
reports (TAF, METAR/SPECI and SIGMET)
SAF (Simple Aeronautical Features)
Geographic Information [incl. ISO 19156 O&M]
METCEOPM
OPM (Observable Property Model)
METCE (Modèle pour l’Échange des informations sur le Temps, le Climate et l’Éau)
ISO 19100-series of International Standards
«der
ived
from
»
«der
ived
from
»
«der
ived
from
»
« formalised as »
«con
form
s to
»OMXML
ISO19136GML
Aviation XML is a GML Application
Schema
Steps to take
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Table Driven Code Forms (TDCF)
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1) Create TDCF using your AWS, message switch, climate data management system
1) Create TDCF using your AWS, message switch, climate data management system
Table Driven Code Forms (TDCF)
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1) Create TDCF using your AWS, message switch, climate data management system1) Create TDCF using your AWS, message switch, climate data management system
2) Ask your RTH to translate for you2) Ask your RTH to translate for you
SYNOPSYNOP BUFRBUFRRTH
Table Driven Code Forms (TDCF)
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1) Create TDCF using your AWS, message switch, climate data management system1) Create TDCF using your AWS, message switch, climate data management system
2) Ask your RTH to translate for you2) Ask your RTH to translate for you
3) All procurements should require TDCF handling3) All procurements should require TDCF handling
Table Driven Code Forms (TDCF)
23
1) Create TDCF using your AWS, message switch, climate data management system1) Create TDCF using your AWS, message switch, climate data management system
2) Ask your RTH to translate for you2) Ask your RTH to translate for you
3) All procurements should require TDCF handling3) All procurements should require TDCF handling
Otherwise over time
you will not see new types of information
you will receive fewer current observations
Otherwise over time
you will not see new types of information
you will receive fewer current observations
But
aviation codes will continue
But
aviation codes will continue
Aviation
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From November 2013
States in a position to do so may
exchange information in XML
From November 2013
States in a position to do so may
exchange information in XML
There is no decision to discontinue METAR/SPECI/TAFThere is no decision to discontinue METAR/SPECI/TAF
Over time, aviation customers may ask for information in XML so that they can combine it with information from other sources
Over time, aviation customers may ask for information in XML so that they can combine it with information from other sources
WIS encourages sharing of informationTable driven codes provide flexibilityChange your processes to use TDCF
25
