Which WIS2 Architecture?
WIS 2.0 is a collaborative system of systems using Web architecture and open standards to provide simple, timely and seamless sharing of trusted weather, water and climate data and information through services
Current status:
·      15 GISCS, some of them are offline
·      Most of NCs are connected to GISCs via GTS
·      GTS continuing use of old technologies and not meet needs of users
·      Most of DCPCs are offline
·      Use of WIS platform still very limited and far from what is expected
Discussion raised in the last meeting:
Proposal | Pros | Cons |
Reduce the number of GISCs | · Easy to monitor · Optimum networks  | · How to choose the GISCs (political more than technical) · Some NCs can be lost. · Much connectivity to manage |
24 cache on the GISC | Easy discovery and access | High data volume to manage |
Combine data with the messages | · Easy access to data · Quick data distribution | Not practical for high volume data |
Area of responsibility | Assistance of NCs  | If GISC offline all NCs in AoR will be offline |
Download data from producers not from GISC | Easy to manage | Complicated for consumers |
Brokers on the Cloud | · Resilience · Big data | · The cost will be very expensive, · who will fund it? · Who will ensure the operations |
 Role of GISC
Role | WIS2 principle |
Receive information from the GISC area |
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Exchange information with other GISCs | Â |
Disseminate information to the GISC area |
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Maintain a 24-hour cache |
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Discovery, access and retrieval |
10.  WIS 2.0: will provide a catalogue containing metadata that describes both data and the service(s) provided to access that data.  |
Data network connectivity of a GISC |
public telecommunications networks (i.e. the Internet) when publishing digital resources. |
Coordinate telecommunications in a GISC area | Â |
Recovery arrangements of a GISC | Â |
Performance monitoring of a GISC | Â |
 Architecture option
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