1. Latest insights from validation activities
Henk Eskes (Royal Netherlands Meteorological Institute)
and partners of CAMS-84

2. CAMS Information Flows

5. Validation & verification products
Validation reports for the global real-time analysis-forecast service (3-monthly updates)
Global system upgrade verification reports
Validation reports for the global reanalysis
Reports to evaluate the regional models above the surface, and consistency with the global analyses
Extended verification information on series of web pages (automated plots on daily basis)

6. Extensions and New Aspects as compared to MACC
Greenhouse gas evaluation included in the validation activity
Arctic theme; Mediterranean theme
Evaluation of the regional services above the surface (talk Matthieu Plu)
Scoring approaches revisit
Traceability
Operationalisation

7. Validation Traceability
Observations
Description of instruments,
stations, providers, QA/QC, uncertainty estimates, site characterisation, representativity, references, acknowledgements
Comparisons
Unit conversions, averaging approaches, comparison details (kernels, regridding), error bars and uncertainty propagation, outlier filtering

8. Aerosol AOD evaluation
MODIS Deep Blue improves analysis (since Sept 2015)
Ångström exponent: too small particles
Control low, loss of mass during forecast
AERONET v2 validated data
Michael Schulz, MET-NO

9. Tropospheric NO2 evaluation
Europe: good match with satellite over last year
Asia: Large underestimation in previous years, better match in / 2016
Satellite measurements clearly show improvements in pollution over Asia (China)
Anne Blechschmidt, IUP-Bremen

10. Ceilometer aerosol evaluation over Germany
New generation of ceilometers powerful tool for validation, real-time
Dust from Sahara well captured
Sea salt overestimated
Harald Flentje, DWD

11. Case study: NH ozone depletion 29 February 2016
Independent BASCOE analyses of ClOx (left)
Ozone depleted values at 40 hPa (middle)
Ozone column (right) overestimate in Jan-Feb, high latitude good agreement lower latitudes, Feb-Mar
Simon Chabrillat, BIRA-IASB

12. CAMS validation of the global services: Acknowledgements
S. Basart (BSC), A. Benedictow (MetNo), A. Blechschmidt (IUP-UB), S. Chabrillat (BIRA-IASB), Y. Christophe (BIRA-IASB), H. Clark (CNRS-LA), E. Cuevas (AEMET), H. Flentje (DWD), K. M. Hansen (AU), U. Im (AU), J. Griesfeller (MetNo), V. Huijnen (KNMI), J. Kapsomenakis (AA), E. Katragkou (AUTH), B. Langerock (BIRA-IASB), M. Ramonet (CEA-LSCE), M. Razinger (ECMWF), A. Richter (IUP-UB), M. Schulz (MetNo), N. Sudarchikova (MPG), W. Thomas (DWD), V. Thouret (CNRS-LA), M. Vrekoussis (AA), A. Wagner (DWD), T. Warneke (UBC), C. Zerefos (AA)
Many thanks to all the many groups providing (real-time) measurements