Radar data requirements and availability for ENRAM

Adriaan Dokter edited this page Jan 5, 2018 · 16 revisions

radar data requirements

  1. vol2bird requires volume data, i.e. data consisting of a set of scans at different elevations
  2. The radar volume data needs to be stored in an HDF5 file, which is structured in OPERA ODIM_h5 format.
  3. The volume data needs to contain both reflectivity and radial velocity quantities.
  4. The quality of the radial velocity should be sufficient. This means that radial velocities are too heavily folded (which occurs when data is collected at pulse repetition frequencies that produces velocity ambiguity / a low Nyquist velocity.

Future radar data availability for ENRAM

The vol2bird program is currently installed in the development environment of the BALTRAD datahub. Only for radar data available at BALTRAD we can extract bird migration information, once permission is obtained to use this data.

For data to be available in BALTRAD, several conditions need to be met:

  1. A country should send both reflectivity and radial velocity data to the OPERA data centre, which is called ODYSSEY. While many countries are sending reflectivity data, radial velocities are still unavailable for many countries.
  2. ODYSSEY should forward these data to the BALTRAD datahub. It is standard policy to do so, but in practice data is not yet forwarded correctly for some radars/countries.
  3. Currently BALTRAD and ODYSSEY store data at a 15 minute interval, higher resolution data is not yet available.
  4. Countries should have accepted the memorandum of understanding (MoU) between OPERA and ENRAM. The MoU is still under consideration by EUMETNET, and no final agreement is expected before November 2015.

In the figures and table below you can assess what is the current status of the data delivery to OPERA and BALTRAD

The availability of reflectivity data (DBZ) at ODYSSEY (Jul 2016):

reflectivity availability July 2016

The availability of radial velocity (VRAD) data at ODYSSEY (Jul 2016):

reflectivity availability July 2016

Country status Oct 2015

As of October 2015, the following countries deliver data at BALTRAD for which we can extract bird information:

country sends DBZ sends VRAD VRAD quality ok data at BALTRAD vol2bird tested all OK
Austria - - X - -
Belgium X X X - X -
Bulgaria - - ? - -
Croatia X X - X -
Cyprus X X ? - -
Czech rep. X X - - -
Denmark X X X X X
Estonia X X X X X
Finland X X X X X
France X X X X X X
Germany X X X - -
Greece - - - - -
Hungary X - ? - -
Iceland - - ? - -
Ireland X X X - -
Italy - - - - -
Latvia X - ? - -
Malta - - ? - -
Netherlands X X X X X X
Norway X X X - -
Poland X X ? - -
Portugal X - ? - -
Romania X X X - -
Serbia X - ? - -
Slovakia X - - X -
Slovenia X X X - -
Spain X - X - -
Sweden X X X X X X
Switzerland X - X - -
UK X X X X X X

Country national archives time span

Data was collected using a questionnaire filled out at the September 2014 OPERA meeting at KNMI, the Netherlands. Countries were asked in which year they started archiving weather radar data, both in a national archive, and at the ODYSSEY datahub.

country DBZ national VRAD national DBZ ODYSSEY VRAD ODYSSEY Comments
Austria 2011 2011 ? ?
Belgium 2002 2002 2013 ?
Bulgaria ? ? ? ?
Croatia 2008? 2008? 2012 2013
Cyprus ? ? ? ?
Czech rep. 2001 2013 ? ?
Denmark 2005 2005 ? ?
Estonia 2009 2009 ? ?
Finland 1999 1999 ? ?
France 2010 2011 2011 2011 national archive in BUFR
Germany 2006 2008 2012 2015 national archive in BUFR
Greece ? ? ? ?
Hungary 2000 2000 2013 ?
Iceland ? ? ? ?
Ireland 2012 ? 2012 2014 dates to be confirmed
Italy 2007 2007 ? ?
Latvia ? ? ? ?
Malta ? ? ? ?
Netherlands 2008 2008 2012 2012
Norway 2006 2006 ? ?
Poland 2011 2011 ? ?
Portugal ? ? ? ?
Romania ? ? ? ?
Serbia ? ? ? ?
Slovakia ? ? ? ?
Slovenia ? ? ? ?
Spain 2008 2008 2012 2015
Sweden 2005 2005 2012 2014
Switzerland 2004 2004 ? ?
UK 2013 2013 2012 2015 1 year rolling archive
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