ADDS Dataserver 1.1 Release Notes (JAN 2007)

New features

• TAF time queries can be specified by time type (issue or valid).
  • dataSource=tafs&hoursBeforeNow=3&timeType=issue
  • dataSource=tafs&hoursBeforeNow=5&timeType=valid
  • If a time type is not specified, a default time type of 'valid' is employed in the query.
• startTime/endTime now accept both Epoch (Unix) times and ISO8601 date/times
  • startTime=2007-01-28T12:30:33Z7endTime=2007-01-28T15:00:00Z
  • startTime=2007-01-28T17:00:00-0700&endTime=2007-01-28T23:00:00-0700
  • Epoch times are still supported
• All times are now reported in ISO8601 date/time format: YYYY-MM-DDThh:mm:ssZ.
  (for more information about this format, please refer to: W3C Date/time Formats)
• Schemas have been updated to reflect the change in output time format to ISO 8601 format
• The following schemas are relevant for the 1_1 release:
• metar1_2.xsd
• taf1_2.xsd
• pirep1_2.xsd
• airsigmet1_1.xsd
• station1_0.xsd
• Radial distance queries are available for METARs, TAFs, PIREPs and AIR/SIGMETs. The query involves entering a radial distance (in statute miles) from a single lon/lat point (in decimal degrees).
  • radialDistance=80;-104.65,39.83
    finds results that lie in an 80 statute mile radial distance from the point defined by the longitude -104.65 and latitude 39.83 (KDEN)
  • The maximum allowable radial distance is 500 statute miles
  • This feature does not permit cases where the International Date Line is crossed or either of the poles is crossed
  • Limits on the longitudes and latitudes are: -90>=latitude>=90 -180>=longitude>=180
• Filtering of query results is now available.
  • The filtering is based on distances between stations.
  • This is available through the minDegreeDistance constraint with any value greater than 0 or less than or equal to 90.
  • A lower value is used to obtain a greater density of results:
    
    flightPath=55.5;KDEN;KSEA;KSFO&minDegreeDistance=2
  • A higher value is used to obtain a lower density of results:
    
    flightPath=75.5;KDEN;KSEA;KSFO&minDegreeDistance=90
  • Omitting the minDegreeDistance constraint will result in all results returned, including multiple results for the same station.
  • The filter removes multiple station results and reports the most recent one.
    
  NOTE:This feature is available only for METARs, TAFs and PIREPs.

Performance improvements, bug fixes

• TAF sfcTemp that are 0 degrees C are now displayed
• the mostRecentForEachStation constraint is now returning only one result for each station
• Increased the result limit for TAFs. This addresses large row count problems that were initially encountered.