Overview
The Arctic oscillation (AO) or Northern Annular Mode/Northern Hemisphere Annular Mode (NAM) is an index of the dominant pattern of non-seasonal sea-level pressure variations north of 20N latitude. Montly values are availible at http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/monthly.ao.index.b50.current.ascii.table . These values can be imported from a local file or directly from the website.
For more information see: http://en.wikipedia.org/wiki/Arctic_oscillation
Configuration (Example)
ModuleConfigFiles
<?xml version="1.0" encoding="UTF-8"?> <timeSeriesImportRun xmlns="http://www.wldelft.nl/fews" xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/timeSeriesImportRun.xsd"> <import> <general> <importType>AoClimateIndex</importType> <serverUrl>http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/monthly.ao.index.b50.current.ascii.table </serverUrl> <idMapId>ImportAO</idMapId> <unitConversionsId>ImportUnitConversions</unitConversionsId> <missingValue>-99.99</missingValue> <importTimeZone> <timeZoneOffset>+00:00</timeZoneOffset> </importTimeZone> </general> <timeSeriesSet> <moduleInstanceId>ImportPDO</moduleInstanceId> <valueType>scalar</valueType> <parameterId>Index.AO</parameterId> <locationId>Climate_Index</locationId> <timeSeriesType>external historical</timeSeriesType> <timeStep unit="month"/> <readWriteMode>add originals</readWriteMode> <synchLevel>4</synchLevel> <expiryTime unit="year" multiplier="100"/> </timeSeriesSet> </import> </timeSeriesImportRun>
<?xml version="1.0" encoding="UTF-8"?> <timeSeriesImportRun xmlns="http://www.wldelft.nl/fews" xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/timeSeriesImportRun.xsd"> <import> <general> <importType>AoClimateIndex</importType> <folder>$IMPORT_AO_FOLDER$</folder> ...
IdMapFiles
<?xml version="1.0" encoding="UTF-8"?> <idMap xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/idMap.xsd" version="1.1"> <map internalParameter="Index.AO" externalParameter="Index.AO" internalLocation="Climate_Index" externalLocation="Climate_Index"/> </idMap>
The Climate_Index location is a placeholder since the index does not have different values for different locations.