Remote Monitoring of Weather at Norwegian Airports by Kjell Hegg and Lasse Stenberg

Norwegian Meteorological Institute met.no Background Trend forecasts to be performed from forecasting centrals Online presentation of all instrument measured meteorological parameters Video images covering the sky around the airport METAR to be made by airport employees TREND to be added at forecasting centrals Near true time presentation of measurements

Norwegian Meteorological Institute met.no Instrumentation Wind measurements –at least to sites along each runway Air temperature, humidity and air pressure –sensors connected to datalogger at the airport Ceilometers –giving cloud bases and vertical visibility Visibility –transmissometers or forward scatter instrumentation, the forward scatter instruments includes PW algorithms. Video cameras –up to 6 cameras in use at a specific airport

Norwegian Meteorological Institute met.no System design Serial outputs connected to LAN –Terminalservers used Modems used for ceilometers and forward scatter instruments Wind directly connected to terminalserver Videocameras connected via videoserver Net connected LINUX server

Norwegian Meteorological Institute met.no Net connection to forecasting centrals 3 airports connected to Bergen, 2 to Oslo and sofar only one to Tromsoe (TREND forecasting) All servers are accessible from Oslo (servicing) Simultaneous data collection locally at airport servers ans at main servers at forcasting centrals.

Norwegian Meteorological Institute met.no Software development Licence free platforms (LINUX/PostGreSQ Kylix/Java used as development tools Software meodules –Sensor data collectors –Video image collectors –Database –Sensor data presentation –Video image presentation

Norwegian Meteorological Institute met.no User interface/data presentation New values once a minute Graphical fields Status field Numerical now values

Norwegian Meteorological Institute met.no Video image presentation 4 images on the same screen Any image can be enlarged by clicking on the actual image Images are time stamped Animation of a sequence of images

Norwegian Meteorological Institute met.no Configuration Configuration tables stored in database Tools to create/change configuration are developed The user interface can be tailored to users need by configuration changes New sensors can be added by using existing parameter configuration tables

Norwegian Meteorological Institute met.no Conclusion and spin-offs Flexible and stable system, easy to change to fit other applications. The same technology are now used to collect data from automatic weather stations Data collection from the weather ship Mike On line access to a new meteorological station in the Antarctic