Web based alert system

Magnus Runesson

SMHI, Sweden

Magnus.Runesson@smhi.se

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Background

All alert systems were different

Some were not easy to maintain

Forecaster had to sit at a specific computer

The systems were not exact enough

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Goals

Consolidate our alert system

Web based client for the forecaster

Make it easy to create new type of alerts

Easy to edit customer and their subscription

Alerts nor subscriptions should be bound to predefined areas

Web 2.0

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Solution

PostgresPostGis

OpenLayers

Prodsys

Prodsys

www

Xml/CAP

SMS

WMS WMS

PostgresPostGIS

Mail

Java

documents

WMS

FAX

MMS

File

WMSGeoserver

JavaREST API

CAP

CAP

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The forecaster’s client

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Experiences

CAP can contain all situations we tested

Some parts of CAP is not good XML makes it hard to parse, ie

addresses tag

Language-tag is ambiguous, same language can be coded in

different ways

Common Meteorological coding of parameters and event code

needed (Idea create a meteorological profile)

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Links to things we have used

Openlayers - http://www.openlayers.org/

Postgresql - http://www.postgresql.org/

Postgis - http://postgis.refractions.net/

Geoserver - http://geoserver.org/

QGIS - http://www.qgis.org/

PGadmin - http://www.pgadmin.org/

Hibernate Spatial - http://www.hibernatespatial.org/

OGC - http://www.opengeospatial.org/

Common Alerting Protocol (CAP) - http://www.incident.com/cap/