1 / 10

DEWS: Delivering Environmental Web Services

DEWS: Delivering Environmental Web Services. Jon Blower Reading e-Science Centre Environmental Systems Science Centre University of Reading on behalf of DEWS partners. DEWS overview. £2.2M DTI Inter-Enterprise Computing Project

lawson
Download Presentation

DEWS: Delivering Environmental Web Services

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DEWS: Delivering Environmental Web Services Jon Blower Reading e-Science Centre Environmental Systems Science Centre University of Reading on behalf of DEWS partners

  2. DEWS overview • £2.2M DTI Inter-Enterprise Computing Project • Aims: to build a functional demonstrator of a system that delivers time-critical, high-volume environmental information to consumers • Two disparate case studies: marine and healthcare • To evaluate the suitability of a Web Services architecture for interoperability, scalability, high-volume data exchange, security and reliability • To bring together technologists, data producers, service providers and end users • To promote early adoption

  3. What is a Web Service? • Platform-independent means for machine-to-machine communication • Roughly equivalent to a subroutine in traditional programming • distributed applications are made by composing Web Services • Widely adopted in industry • Most of Amazon’s business is through Web Services interface, not website • But standards are still in flux • and tooling is not always as good as it could be

  4. Health stream overview • Aim is to support NHS decision-makers by providing information for predicting occurrences of COPD • Chronic Obstructive Pulmonary Disease • Mainly affects smokers and is incurable • WHO estimates that COPD kills as many people as AIDS • Exacerbated by weather conditions, e.g. low temperatures • DEWS collects data from many sources (inc. NHS Direct, GPs, NWP models) and exposes data via Web Services • Web Portal interface displays tailored graphical data to decision-makers

  5. Marine stream overview • DEWS delivers NCOF data for search-and-rescue, oil spill mitigation etc • Much higher volume than the health stream • BMT are the “test client” • SARIS model driven by current and wind forecasts • Many other clients can connect too • e.g. via the DEWS Portal

  6. DEWS system architecture

  7. Key technologies • Interoperability is guaranteed through adoption of international standards for geospatial data • Server designs from the Open Geospatial Consortium (OGC) • Marine data provided in CF-compliant NetCDF • Marine stream uses: • Web Coverage Server for marine data • Web Map Server for marine images • Health stream uses Web Feature Server • Allows overlaying and intercomparison of DEWS data with other data sources

  8. Security • DEWS uses the security model of the NERC Data Grid • DEWS will adapt for WS-Security standard • Clients only allowed to access data if their role is recognised • more scalable (and legal!) than identity-based security • All access to DEWS systems will be logged and audited • allowing for easy production of monthly invoices

  9. Demonstrations DEWS marine online visualization DEWS Web Portal

  10. What does this mean for NCOF? • DEWS will provide: • a software stack that can be used to serve NCOF data securely to clients • An interactive online visualization system • But: • DEWS will not produce an operational system • DEWS focuses on server-side systems, not customer-facing systems • NCOF PSRE project will enable customer-facing components (esp. website) to be further developed

More Related