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Royal Meteorological Institute of Belgium

38 record(s)
 
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From 1 - 10 / 38

  • Bird density profiles derived from weather radar measurements

    Bird density profiles are derived from weather radar volume data in real time, by the vol2bird algorithm as described in Dokter et al. (2011, 2019). The vol2bird algorithm exploits the radar reflectivity characteristics of different scatterers in the atmosphere, in order to distinguish biological from non-biological radar echoes. Once biological scatterers are isolated in the volume files, the reflectivity of these scatterers is converted in an estimate of the bird density per vertical layer of 200m, using a mean cross section of 11 cm2. The vbird profiles are provided for the following radars, with the radar owner in parentheses: Jabbeke (RMI), Wideumont (RMI), Helchteren (VMM), Zaventem (Skeyes), Herwijnen (KNMI), Den Helder (KNMI), Neuheilenbach (DWD), Essen (DWD), Abbeville (Météo-France) and Avesnois (Météo-France). References: - Dokter A.M., Liechti F., Stark H., Delobbe L., Tabary P., Holleman I., Bird migration flight altitudes studied by a network of operational weather radars, J. R. Soc. Interface, 8, 30–43, 2011, DOI 10.1098/rsif.2010.0116 - Dokter A.M., Desmet P., Spaaks J.H., van Hoey S., Veen L., Verlinden L., Nilsson C., Haase G., Leijnse H., Farnsworth A., Bouten W., Shamoun-Baranes J., bioRad: biological analysis and visualization of weather radar data, Ecography, 42, 852-860, 2019, DOI 10.1111/ecog.04028

  • View Service (WMS) for 'User reports from the RMI smartphone app'

  • UV Index

    UV Index derived from spectral measurements with a Brewer UV spectrophotometer. This product is not publically available yet.

  • Networks of automatic lidar-ceilometer systems

    The ceilometer CL51 employs a pulsed diode laser LIDAR technology, where short, powerful laser pulses are sent out in a vertical or near-vertical direction. The reflection of light (backscatter) caused by clouds, precipitation or other obscuration is analysed and used to determine the cloud base height, the cloud layer height and the amount of clouds (in octas) in different layers.

  • Ozone daily value

    From multiple observations during the day with UV spectrophotometers a daily value of the ozone column is calculated. This product is not publically available yet.

  • View Service (WMS) for Automatic weather station (AWS) observations

    View Service (WMS) for Automatic weather station (AWS) observations

  • Commune hourly forecasts

    Hourly forecasts for each belgian commune, from current hour up to the next 5 days. This product is not publically available.

  • Download Service (WFS) for Synoptic observations

    Download Service (WFS) for Synoptic observations

  • Download Service (WFS) for Automatic weather station (AWS) observations

    Download Service (WFS) for Automatic weather station (AWS) observations

  • Download Service (WFS) for Networks of automatic lidar-ceilometer systems

    Download Service (WFS) for Networks of automatic lidar-ceilometer systems The data are updated each 10 minutes. Only the archives of the last 30 days are available.