The Eumetcal Programme in brief
Eumetcal is a EUMETNET optional programme with 25 participating and 4 Third Party Contribution which include EUMETSAT. In addition, the Eumetcal Programme has partnership agreements with several organisations outside the EUMETNET community. The Programme is lead by the Eumetcal Consortium consisting of KNMI (Royal Netherlands Meteorological Institute) and DHMZ (Meteorological and Hydrological Service of Croatia). Below a map showing the current Eumetcal member and partner countries.
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Zentralanstalt für Meteorologie und Geodynamik (ZAMG) Bulgarian National Institute of Hydrology and Meteorology (BNIMH) 
Participating Members
Croatian Meteorological and Hydrological Service (DHMZ)
Cyprus Meteorological Service (CYMET)
Czech Hydrometeorological Institute (CHMI)
Danish Meteorological Institute (DMI)
Estonian Weather Service (ESTEA)
Finnish Meteorological Institute (FMI)
Greek Meteorological Service (HNMS)
Icelandic Meteorological Office (IMO)
The Irish Meteorological Service (Met Éireann)
Meteorological Service of Military Italian Aeronautics (ItAf ReMet)
Latvian Environment, Geology and Meteorology Centre (LEGMC)
Luxemburg (MeteoLux)
Montenegro (IHMS)
The Royal Netherlands Meteorological Institute (KNMI)
Norwegian Meteorological Institute (MetNorway)
Institute of Meteorology and Water Management (IMGW)
The Portuguese Sea and Atmosphere Institute (IPMA)
Republic Hydrometeorological Service of Serbia (RHMSS)
Slovak Hydrometeorological Institute (SMHU)
Slovenian Environment Agency (ARSO)
Swedish Meterological Institute (SMHI)
Agencia Estatal de Meteorología (AEMET)
Switzerland (MeteoSwiss)
UK Met Office (MO)
Third Party
Lithuanian Hydrometerological Service (LHMS)
Romanian National Meteorological Administration (NMAR)
EUMETSAT 
Partners
OPERA Data production
During the previous OPERA phase (2019-2023), the data centre (ODYSSEY) was gradually replaced with three new production lines (CUMULUS/STRATUS CIRRUS, and NIMBUS).
New production lines
• CUMULUS/STRATUS, a real-time data hub providing the incoming data back to members in approximately real-time for their own processing (e.g. regional composites or NWP assimilation) and to the other two production lines (CIRRUS and NIMBUS). The production line has been operational since Q2/2021.
• CIRRUS producing 5-minute instantaneous maximum reflectivity composite (dBZ) for current weather, severe weather alerts and aviation needs. It is replacing the ODYSSEY maximum reflectivity composite with improved spatial (now with 1 km gridding) and temporal resolution (from 15 – minutes to 5- minutes). The production has been operational since Q1/2024. Documentation regarding the CIRRUS maximum reflectivity product and its differences compared to the ODYSSEY maximum reflectivity product can be found here.
OPERA_Max Reflectivity_Product Sheet_Ed-2.0.pdf
OPERA5_Report_Cirrus-vs-Odyssey_Ed-2.0.pdf
• NIMBUS produces centrally the quality-controlled products; instantaneous rain rate (mm/h) and 1 – hour accumulation (mm) composites, and wind profiles (TBD Q4/2024), and additionally the quality-controlled volume data for NWP assimilation. It replaces the ODYSSEY production for the above-mentioned products. The NIMBUS production has been operational since Q2/2024. Documentation regarding the NIMBUS composites and their differences compared to the corresponding ODYSSEY can be found here:
NIMBUS_datasheet_composites_1.0_13062024.pdf
NIMBUS_composite_vs_ODYSSEY_1.0_19062024.pdf
OPERA support can be reached through email to support.opera[at]eumetnet.eu. Responses from the service desk are provided on a best-effort basis.
Access to data
The members of OPERA and EUMETNET may use the composites for their official duties without a separate license. The Numerical Weather Prediction (NWP) modelers obtain the quality-controlled volume data directly from the NIMBUS production line.
The OPERA products are also available under license to 3rd parties:
For national weather services not participating in OPERA which want to use the products to support their public weather service, contact info[at]eumetnet.eu
For a research and education licence, contact info[at]eumetnet.eu.
For a license to exploit the products commercially, contact one of the EUMETNET members contact points (https://www.ecomet.eu/contact/members) or send an email to eumetdaps_secretariat[at]eumetnet.eu.
EUMETNET AMDAR coverage
The coverage for the EUMETNET AMDAR network for a typical day is shown on the map below. Yellow plots indicate observations taken enroute with red and green plots representing aircraft ascent and descent profiles.
During the previous OPERA phase (2019-2023), the data centre (ODYSSEY) was gradually replaced with three new production lines (CUMULUS/STRATUS CIRRUS, and NIMBUS).
Figure: The schematic structure of the new OPERA data production.
The three new production lines are:
• CUMULUS/STRATUS, a real-time data hub providing the incoming data back to members in approximately real-time for their own processing (e.g. regional composites or NWP assimilation) and to the other two production lines (CIRRUS and NIMBUS). The production line has been operational since Q2/2021.
• CIRRUS producing 5-minute instantaneous maximum reflectivity composite (dBZ) for current weather, severe weather alerts and aviation needs. It is replacing the ODYSSEY maximum reflectivity composite with improved spatial (now with 1 km gridding) and temporal resolution (from 15 – minutes to 5- minutes). The production has been operational in Q1/2024. Documentation regarding the CIRRUS maximum reflectivity product and its differences compared to the ODYSSEY maximum reflectivity product can be found here.
– OPERA_Max Reflectivity_Product Sheet_Ed-2.0.pdf
– OPERA5_Report_Cirrus-vs-Odyssey_Ed-2.0.pdf
• NIMBUS producing centrally the quality-controlled products; instantaneous rain rate (mm/h) and 1 – hour accumulation (mm) composites, and wind profiles (TBD Q4/2024), and additionally the quality-controlled volume data for NWP assimilation. It is replacing the ODYSSEY production for the above-mentioned products. The NIMBUS production has been operational in Q2/2024. Documentation regarding the NIMBUS composites and their differences compared to the corresponding ODYSSEY can be found here:
– NIMBUS_datasheet_composites_1.0_13062024.pdf
– NIMBUS_composite_vs_ODYSSEY_1.0_19062024.pdf
OPERA support can be reached through email to support.opera@emetnet.com. Responses from the service desk are provided on a best-effort basis.
Access to data
The members of OPERA and EUMETNET may use the composites for their official duties without a separate license. The Numerical Weather Prediction (NWP) modelers obtain the quality-controlled volume data directly from NIMBUS production line.
The OPERA products are also available under license to 3rd parties:
· For national weather services not participating in OPERA which want to use the products to support their public weather service, contact info@emetnet.com
· For a research and education licence, contact info@emetnet.com.
· For a license to exploit the products commercially, contact one of the EUMETNET members contact points(https://www.ecomet.eu/contact/members) or send a mail eumetdaps_secretariat@emetnet.com.
