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"Time"-parallel diffusion-based correlation operators

A.T. Weaver, S. Gurol, J. Tshimanga, Marcin Chrust, A. Piacentini
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17578-time-parallel-diffusion-based-correlation-operators.pdf
What influences the middle atmosphere circulation in the IFS?

I. Polichtchouk, Robin Hogan, T.G. Shepherd, Peter Bechtold, Tim Stockdale, S. Malardel, Sarah-Jane Lock, L. Magnusson
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17670-what-influences-middle-atmosphere-circulation-ifs.pdf
Modeling of nonlocal thermodynamic equilibrium effects in the classical and principal component based version of the RTTOV fast radiative transfer model

Marco Matricardi, M. López Puertas, B. Funke
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17672-modeling-nonlocal-thermodynamic-equilibrium-effects-classical-and-principal-component-based.pdf
Assessment of the forecast impact of suface-sensitive microwave radiances over land and sea-ice

Niels Bormann, Cristina Lupu, Alan J. Geer, Heather Lawrence, P. Weston, Stephen English
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17674-assessment-forecast-impact-suface-sensitive-microwave-radiances-over-land-and-sea-ice.pdf
On the initialization of Tropical Cyclones

Massimo Bonavita, Mohamed Dahoui, Philippe Lopez, F. Prates, Elias Hólm, Giovanna De Chiara, Alan J. Geer, L. Isaksen, B. Ingleby
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17677-initialization-tropical-cyclones.pdf
Forecasting tropical cyclone landfall using ECMWF's seasonal forecasts from System 4

D.L. Bergman, L. Magnusson, J. Nilsson, Frédéric Vitart
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17679-forecasting-tropical-cyclone-landfall-using-ecmwfs-seasonal-forecasts-system4.pdf
Evidence of a stratospheric methane bias in the IFS against MIPAS data

Sebastien Massart, Anna Agusti-Panareda, Johannes Flemming
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17698-evidence-stratospheric-methane-bias-ifs-against-mipas-data.pdf
Assimilating observations sensitive to cloud and precipitation

Alan J. Geer, Maike Ahlgrimm, Peter Bechtold, Massimo Bonavita, Niels Bormann, Stephen English, Mark Fielding, Richard Forbes, Robin Hogan, Elias Hólm, Marta Janiskova, Katrin Lonitz, Philippe Lopez, Marco Matricardi, Irina Sandu, P. Weston
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17718-assimilating-observations-sensitive-cloud-and-precipitation.pdf
Harmonisation of the usage of microwave sounder data over land, coasts, sea ice and snow. First year report

P. Weston, Niels Bormann, Alan J. Geer, Heather Lawrence
2017, EUMETSAT/ECMWF Fellowship Programme Research Reports, Report.

17766-harmonisation-usage-microwave-sounder-data-over-land-coasts-sea-ice-and-snow-first-year-report.pdf
Radiation in numerical weather prediction

Robin Hogan, Maike Ahlgrimm, Gianpaolo Balsamo, Anton Beljaars, P. Berrisford, Alessio Bozzo, Francesca Di Giuseppe, R.M. Forbes, Thomas Haiden, Simon Lang, Michael Mayer, I. Polichtchouk, Irina Sandu, Frédéric Vitart, Nils Wedi
2017, ECMWF Technical Memoranda, Technical memorandum, ECMWF.

17771-radiation-numerical-weather-prediction.pdf