Page History

The 16th Congress (2011) of the World Meteorological Organisation (WMO) approved the recommendation from its Commission for Basic Systems (CBS-Ext.(2010)) to establish a Lead Centre for Deterministic NWP Verification (LC-DNV) and to designate ECMWF as this Lead Centre.

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The CBS standardised procedures for verification of deterministic NWP products are defined in Manual on the Global Data-processing and Forecasting System: Annex IV to the WMO Technical Regulations (available from WMO library at https://library.wmo.int/opac/index.php?lvl=notice_display&id=12793#.Wo8mHa0pFrkrecords/item/35703-manual-on-the-global-data-processing-and-forecasting-system), appendix 2.2.34.

The 16th WMO Congress (2011) approved a number of significant changes to these standard procedures, as recommended by CBS-Ext.(2010). LC-DNV will coordinate and facilitate the transition to the updated procedures. All GDPFS centres are encouraged to read the information and guidance provided and to implement these changes as soon as possible.

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• Score definitions
• Procedure for posting verification reports to FTP server
• Data format of verification reports
• Access to FTP site
• Auxiliary data (climatology, station lists)
• Comments and hintsLogs of received reports  

Verification results (plots)

• Time series plots
• Monthly mean plots
• Surface time series plots
• Surface monthly mean plots

Joint Working Group for Forecast Verification Research

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Documents and reports

• Scores for polar regions
• Detailed description of the SEEPS score for precipitation: Rodwell et al, 2010: A new equitable score suitable for verifying precipitation in NWP.
• Haiden et al, 2012: Intercomparison of global model precipitation forecast skill in 2010/11 using the SEEPS score.
• Surface verification studies - CMC
• Surface verification studies - ECMWF
• Surface verification studies - JMA
• Surface verification studies - TMA
• Surface verification studies - UKMO

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