2nd Joint meeting between TT-WISMon and TT-WDQMS-2022-Jan-21

Date

Jan 21, 2022 12:00-13:00UTC

Participants

TT-WISMon

Mr Kai-Thorsten WIRT - Lead - ( Germany )
Mr Cristiano Zanna - Member - ( ECMWF )
Mr EGAWA, Takumu - Member - ( Japan )
Mr Francilly Lardin SAMBA - Member - ( Congo )
Ms Xiang LI - Member - ( China ) (Absent)

TT-WDQMS

Mr Jeffrey ATOR - Lead- ( United States of America )
Mr Alexander Cress - Member - ( Germany )
Mr OTA, Yukinari - - ( Japan )
Ms Cristina PRATES - - ( ECMWF )

WMO Secretariat

Enrico Fucile (Head, DIM/WIS/I)
Timo Proescholdt
Hassan Haddouch
Maaike Limper
Xiaoxia Chen

Agenda

High-level architecture of WIS2.0 monitoring

Summary

The teams met to review the high-level requirements and discuss the high-level architecture of the WIS monitoring prototype with a view of implementing a GBON and WIS 2.0 monitoring. The teams agreed that the overall architecture will consist of several sensor centers providing monitoring information to a central monitoring component. An “active” approach, whereby the sensor centers process data and extract the metadata needed for the monitoring should be taken. The team also discussed the extent to which WIS 2.0 principles could be used in the design. A Pub/Sub approach would in principle allow to send monitoring data in real-time to the central component instead of a periodic transfer of aggregate information. However, the functional requirements do not require real-time access and the teams tentatively felt that a periodic file transfer, perhaps supported by a broker would result in an operationally more stable solution. The teams agreed to meet again in 2-3 weeks' time to again discuss the issue of data transfer as well as more detailed requirements.

Discussion topics

No	Item	Presenter	Notes

No

Item

Presenter

Notes

1

Opening

Timo

Timo:Data Policy, GBON were approved. To build the pilot project for WIS2.0 monitoring.

Timeline for monitoring GBON implementation was set in the summer.

Objective tool: look at data at different points, not to be linked to NWPC

Cristina: What is the idea behind GBON?

Enrico: 1) GBON was approved in Cg-2021; 2) to build a team for GBON implementation; 3) not clear for the stations selection creteria; 4) Monitoring of both WDQMS and WIS, the objective this joint team

2

High-level architecture

Presentation

Timo

Presentation is here. The goal is to leverage the principles for monitoring.

Questions to be discussed:

Exchange format
Link between distributed sensor-centers and central storage/reporting component

3

Discussion

ALL

Kai

Shares the presentation of WIS2.0 Monitoring Procedures.
- Sensor Centers (requirements, procedure,)
- Monitoring Centers

Enrico

It is a good starting point.
to provide the software to the centers (opensource)
GTS: multiple stations in one message
WIS2.0: to avoid having collective messages
Complexity of monitoring lies in decoding part (many BUFR templates), for example, 5+ templates for SYNOP

Timo: we need pragmatic ways

broker: sensor centers to have one broker each or a cloud based broker
2 or 3 sensor centers (to standardize the message format)

Jeff

US: support this proposal, not for GISC Washington

Enrico

to make a decision about the proposal today
to reach TT-GISC for their contribution
a strategy of data sent in real time

Kai:

preference: active
WIS2

Cristina

preference: active (if software provided)

Cristiano

preference: active
guidance needed for sub-pub in real-time
process for WIS pilot project
- Timo: ECMWF and WMO MoU for software development, and it is also a member driven process
- Enrico: to think 5 sensor centers generating traffic, a real-time data, monitoring near-real-time is acceptable; some tests are needed
- Kai: amount and frequency of reports: no impact on technical implementation; message received, reports to be grouped on an hourly basis and sent out
- Enrico: MQP, group the report of messages.
- Timo: to discuss the configuration variable of aggregation rules at the next meeting
- JMA would be also a sensor center.
- Hassane: 1) real time is more useful at the local level not the global level; 2) determinator: compare what we receive and what it is expected to receive; 3) component in WIS2node

Action items

to reach the TT-GISC for their contribution and comments on the sensor centers

JMA colleagues to review the presentation and send the feedback to Secreatariat

Decisions

Next meeting: in 2 or 3 weeks
The majority of team agree on the active way for exchange format

Ad-hoc joint team TT-WISMon&TT-WDQMS