Meeting information

Report of the meeting: Final report

Chair: Bruce Bannerman
WMO & Webex contact: Steve Foreman (WMO)

Location:
Date: 22 to 25 June 2015
Meeting opens 22 June at: 09:00 Melbourne Time (UTC+10:00)
Meeting closes 25 June at 17:00 Melbourne Time (UTC+10:00)

Overview

An adhoc inter-program workshop has been called to plan the activities required to develop a data representation for the use and exchange of meteorological observations data, together with the context of how that observation was made, and relevant data provenance, particularly within the climate domain.

This workshop is timely, following a number of WMO related activities, including:

• The publishing of WIGOS Observations Metadata;
• The publishing of WMO No: 1131, Climate Data Management System Specifications, including a definition of climate metadata (Observations; Discovery; and Provenance);
• A CCl / WIGOS adhoc meeting on Observational Metadata in Geneva on November 2014 that concluded that WIGOS Metadata and Climate Observations Metadata is essentially the same;
• The development of the WMO Profile of ISO 19115 Discovery Metadata;
• The development of the initial WMO METCE logical data model based on ISO 19156 Observations and Measurements;
• The development of the OGC Timeseries logical data model, also based on O&M. This work has been led by both the UK MetOffice and BoM; and
• The development of the OSCAR database by MeteoSuisse to store global observations metadata.

The time has come to develop a formal logical data model to underpin the exchange of observational metadata via a number of technologies, including perhaps XML, RDF, BUFR, NetCDF and potentially other formats.

This data model should re-use and extend the work that has been done to date on METCE and related technologies.

Key objectives

The primary objectives of the meeting are to:

• develop a common understanding within the team of a range of issues surrounding the development of a logical data model to underpin future exchange of meteorological observations data, together with the context of how that observation was made (metadata); and
• using this common understanding, to agree on a work plan to further develop the logical data model and to demonstrate its effective use.

Workshop goals:

The goals of the workshop are to:

1. get participants to a level of expertise where they are able to contribute;
2. determine how to incorporate OGC Timeseries into the WMO data model framework (METCE);
3. determine how to map WIGOS Metadata requirements onto METCE, WMO Core Metadata Profile and Timeseries;
4. identify the extensibility mechanisms to be used within the formal encoding of METCE and the WIGOS Metadata to enable more detailed requirements, such as those of surface-based climate observations, to be subsequently added;
5. collectively develop a first-cut UML model for the formal encoding of WIGOS Metadata;
6. derive the GML Application Schema from that first-cut UML model;
7. encode sample data in XML compliant with the GML Application Schema and evaluate against anticipated usage patterns for WIGOS Metadata:
   1. exchange of observation time-series data; and
   2. provision of observing system descriptions to the Observing System Capability Analysis and Review tool (OSCAR).
8. agree the work plan.

NB: The first cut logical data model and related GML Application schema that we plan to develop at points 5 to 7 above, will be very rudimentary and will need considerable subsequent work to turn it into something usable for operational tasks.

Remaining actions

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Documents

Linked documents

• Supporting information on the WIGOS Metadata Standard
  • WIGOS newsletter article
  • (D03) WIGOS standard approved by Cg-17
  • OSCAR surface presentation from Congress
  • Beta version of OSCAR surface
  • OGC modelling "cookbook" (limited access)

Meeting documents

T	Name	Last Modified	Hits
	A-Final Report Final Report	Wed 28 of Oct, 2015	6668
	A01 Work plan and tracker	Wed 28 of Oct, 2015	209
	A02-1 Notes on teleconference 1 - 30 September 2015	Wed 30 of Sep, 2015	212
	A02-2 Notes on teleconference 1 - 28 October2015	Wed 28 of Oct, 2015	138
	A03 Diagram with Mr Tandy's questions on the data model - for the first follow-up teleconference.	Tue 29 of Sep, 2015	147
	D01 Provisional agenda	Mon 22 of Jun, 2015	210
	D02 Draft Data Model in EAP format as used and updated during the meeting. This is a draft and will change frequently.	Mon 15 of Jun, 2015	148
	D03 WIGOS metadata definition approved by seventeenth Congress.	Thu 18 of Jun, 2015	227
	D03.2.5.3 Experiences with high quality climate networks	Mon 22 of Jun, 2015	142
	Feedback Format for feedback.	Wed 02 of Dec, 2015	120
	I01 Local information	Thu 21 of May, 2015	242
	I02 Locations around the venue (KML file)	Thu 21 of May, 2015	224
	Internal Review 1 Internal review of the data representation - December 2015	Wed 02 of Dec, 2015	609
	P01.1 Introduction and objectives of the meeting.	Thu 18 of Jun, 2015	149
	P01.1.1 Introduction to WIGOS	Fri 19 of Jun, 2015	162
	P01.3 Presentation on working arrangements	Thu 18 of Jun, 2015	153
	P02.1 Approach to model-driven data exchange	Mon 22 of Jun, 2015	146
	P02.2 Agenta item 2.2: UML Basics	Wed 17 of Jun, 2015	164
	P02.3 Agenda item 2.3: rules for application schema	Wed 17 of Jun, 2015	146
	P02.4 Agenda item 2.4: Workflow and tools	Wed 17 of Jun, 2015	167
	P02.4(2) Serialization specific to METCE	Mon 22 of Jun, 2015	152
	P02.4(3) extensions required for METCE	Mon 22 of Jun, 2015	146
	P02.6 Overview of Observations and Measurements	Thu 18 of Jun, 2015	159
	P02.7 Overview of METCE	Mon 22 of Jun, 2015	144
	P02.7(pdf) Overview of METCE	Mon 22 of Jun, 2015	174
	P02.8 Overview of Timeseries and TimeseriesML	Fri 19 of Jun, 2015	174
	P03.1 WIGOS Metadata Standard & OSCAR/Surface	Tue 23 of Jun, 2015	157
	P03.1(1) Space and time concepts in WIGOS metadata	Fri 19 of Jun, 2015	157
	P03.2.1.1 The Austrralian SitesDb as an expample of NHMS use of observation metaadata	Wed 24 of Jun, 2015	153
	P03.2.5 Managing an historical climate record	Sun 21 of Jun, 2015	156
	P03.2.5.1 Experiences of (Observation) Metadata requirements in (Developing) countries	Tue 23 of Jun, 2015	162
	P03.2.5.2 Quality Assurance and Quality Control of the Australian Climate Data Record	Tue 23 of Jun, 2015	145
	P03.2.5.3 Use of metadata in the development of long-term climate data sets	Fri 19 of Jun, 2015	149
	P03.2.6 What is the authoritative climate record?	Sun 21 of Jun, 2015	158
	P03.3 User stories	Sun 21 of Jun, 2015	150