Technical Memoranda

915
Alan Geer; Cristina Lupu; David Duncan; Niels Bormann; Stephen English
SURFEM-ocean microwave surface emissivity evaluated
02/2024

81550-surfem-ocean-microwave-surface-emissivity-evaluated.pdf
914
Tiago Quintino; Iain Russell; Daniel Tipping; Dusan Figala
Impact of using Github enterprise for open development
11/2023

81524-impact-of-using-github-enterprise-for-open-development.pdf
913
Sebastien Massart
Extended control variable (XCV): skin temperature background correction for the assimilation of clear-sky microwave radiances
10/2023

81514-extended-control-variable-xcv-skin-temperature-background-correction-for-the-assimilation-of-clear-sky-microwave-radiances.pdf
912
Niels Bormann; Linus Magnusson; David Duncan; Mohamed Dahoui
Characterisation and correction of orbital biases in AMSU-A and ATMS observations in the ECMWF system
10/2023

81520-characterisation-and-correction-of-orbital-biases-in-amsu-a-and-atms-observations-in-the-ecmwf-system.pdf
911
Thomas Haiden; Martin Janousek; Frédéric Vitart; Zied Ben-Bouallegue; Fernando Prates
Evaluation of ECMWF forecasts, including the 2023 upgrade
09/2023

81389-evaluation-of-ecmwf-forecasts-including-the-2023-upgrade.pdf
906
Daisuke Hotta; Katrin Lonitz; Sean Healy
Forward operator for polarimetric radio occultation measurements
06/2023
81358-forward-operator-polarimetric-radio-occultation-measurements.pdf
905
David Duncan; Niels Bormann; Alan Geer; Peter Weston
Superobbing and Finer Thinning for All-sky Humidity Sounder Assimilation
03/2023
81345-superobbing-and-finer-thinning-all-sky-humidity-sounder-assimilation.pdf
904
Tiago Quintino; Umberto Modigliani; Florian Pappenberger; Sylvie Lamy-Thepaut; Simon Smart; James Hawkes; Iain Russell; Laurent Gougeon; Cristiano Zanna; Baudouin Raoult
Software Strategy and Roadmap 2023-2027
01/2023
81334-software-strategy-and-roadmap-2023-2027.pdf
903
Philippe Lopez; Marco Matricardi
Validation of IFS+RTTOV/MFASIS0.64-μm reflectances against observations from GOES-16, GOES-17, MSG-4 and Himawari-8
09/2022
20472-validation-ifsrttovmfasis064-mm-reflectances-against-observations-goes-16-goes-17-msg-4-and.pdf
902
Thomas Haiden; Martin Janousek; Frédéric Vitart; Zied Ben-Bouallegue; Laura Ferranti; Fernando Prates; David Richardson
Evaluation of ECMWF forecasts, including the 2021 upgrade
09/2022
20469-evaluation-ecmwf-forecasts-including-2021-upgrade.pdf
901
Stephan Hemri; Tim Hewson; Estibaliz Gascon; Jan Rajczak; Jonas Bhend; Christoph Spririg; Lionel Moret; Mark Liniger
How do ecPoint precipitation forecasts compare with postprocessed multi-model ensemble predictions over Switzerland?
08/2022
81319-how-do-ecpoint-precipitation-forecasts-compare-postprocessed-multi-model-ensemble-predictions.pdf
900
Eugen Betke; Tiago Quintino; Simon Smart; Tomas Wilhelmsson
Impact of GRIB compression on weather forecast data and data-handling applications
08/2022
81320-impact-grib-compression-weather-forecast-data-and-data-handling-applications.pdf
899
Chris Burrows; Pierre Dussarrat
Preparing for the exploitation of MTG-S IRS in NWP using FY4-A GIIRS observations
06/2022
20396-preparing-exploitation-mtg-s-irs-nwp-using-fy4-giirs-obs.pdf
898
Michael Mayer; Magdalena Alonso-Balmaseda; Stephanie Johnson; Linus Magnusson; Christopher Roberts; Hao Zuo
Outcomes from UGROW-IO: Forecast errors in the Eastern Indian Ocean across lead times
06/2022
20401-outcomes-ugrow-io-forecast-errors-eastern-indian-ocean-across-lead-times.pdf
896
Zied Ben-Bouallegue; Fenwick Cooper; Matthew Chantry; Peter Düben; Peter Bechtold; Irina Sandu
Statistical modelling of 2m temperature and 10m wind speed forecast errors
04/2022
20342-statistical-modelling-2m-temperature-and-10m-wind-speed-forecast-errors.pdf
895
Chloe Brimicombe; Tiago Quintino; Simon Smart; Claudia Di Napoli; Robin Hogan; Hannah Cloke; Florian Pappenberger
Calculating the Cosine of the Solar Zenith Angle for Thermal Comfort Indices
04/2022
20336-calculating-cosine-solar-zenith-angle-thermal-comfort-indices.pdf
894
Alan Geer; Katrin Lonitz; David Duncan; Niels Bormann
Improved surface treatment for all-sky microwave observations
04/2022
20337-improved-surface-treatment-all-sky-microwave-observations.pdf
893
Takafumi Kanehama; Irina Sandu; Anton Beljaars; Annelize van Niekerk; Nils Wedi; Souhail Boussetta; Simon Lang; Stephanie Johnson; Linus Magnusson
Evaluation and optimizaton of orographic drag in the IFS
03/2022
20333-evaluation-and-optimizaton-orographic-drag-ifs.pdf
892
Philippe Lopez; Marco Matricardi; Mark Fielding
Validation of IFS+RTTOV/MFASIS solar reflectances against GOES-16 ABI obs
03/2022
20332-validation-ifsrttovmfasis-solar-reflectances-against-goes-16-abi-obs.pdf
891
Linus Magnusson; Magdalena Alonso-Balmaseda; Mohamed Dahoui; Richard Forbes; Thomas Haiden; David Lavers; Irina Sandu; Steffen Tietsche
Summary of the UGROW subproject on tropospheric temperature bias during JJA over the Northern Hemisphere
03/2022
20356-summary-ugrow-subproject-tropospheric-temperature-bias-during-jja-over-northern-hemisphere.pdf
890
Peter Janssen
Notes on shallow water extension of Miles Theory
02/2022
20286-notes-shallow-water-extension-miles-theory.pdf
889
Frédéric Vitart; Rebecca Emerton; Mark Rodwell; Magdalena Alonso-Balmaseda; Thomas Haiden; Stephanie Johnson; L. Magnusson; Christopher Roberts; Irina Sandu
Investigating biases in the representation of the Pacific sub-tropical jet stream and associated teleconnections (a UGROW sub-project)
01/2022
20281-investigating-biases-representation-pacific-sub-tropical-jet-stream-and-associated.pdf
888
Linus Magnusson; Sharan Majumdar; Rebecca Emerton; David Richardson; Magdalena Alonso-Balmaseda; C. Baugh; Peter Bechtold; Jean-Raymond Bidlot; Antonino Bonanni; Massimo Bonavita; Niels Bormann; Andy Brown; Philip Browne; Hilda Carr; Mohamed Dahoui; Giovanna De Chiara; Michail Diamantakis; David Duncan; Stephen English; Richard Forbes; Alan Geer; Thomas Haiden; Sean Healy; Tim Hewson; B. Ingleby; Martin Janousek; Christian Kuehnlein; Simon Lang; Sarah-Jane Lock; Tony McNally; Kristian Mogensen; Florian Pappenberger; Inna Polichtchouk; Fernando Prates; C. Prudhomme; Florence Rabier; Patricia de Rosnay; Tiago Quintino; Michael Rennie
Tropical cyclone activities at ECMWF
10/2021
20228-tropical-cyclone-activities-ecmwf.pdf
887
Ryan Williams; Robin Hogan; Inna Polichtchouk; Michaela Hegglin; Tim Stockdale; Johannes Flemming
Evaluating the impact of prognostic ozone in IFS NWP forecasts
10/2021
20190-evaluating-impact-prognostic-ozone-ifs-nwp-forecasts.pdf