Search Results - "BELJAARS, A. C. M"

The ECMWF model climate: recent progress through improved physical parametrizations by Jung, T., Balsamo, G., Bechtold, P., Beljaars, A. C. M., Köhler, M., Miller, M. J., Morcrette, J.‐J., Orr, A., Rodwell, M. J., Tompkins, A. M.

“…The progress achieved since 2005 in simulating today's climate with the European Centre for Medium‐Range Weather Forecasts (ECMWF) model through improved…”
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STABLE ATMOSPHERIC BOUNDARY LAYERS AND DIURNAL CYCLES: Challenges for Weather and Climate Models by Holtslag, A. A. M., Svensson, G., Baas, P., Basu, S., Beare, B., Beljaars, A. C. M., Bosveld, F. C., Cuxart, J., Lindvall, J., Steeneveld, G. J., Tjernström, M., Van De Wiel, B. J. H.

“…The representation of the atmospheric boundary layer is an important part of weather and climate models and impacts many applications such as air quality and…”
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Wind turning across the marine atmospheric boundary layer by Brown, A. R., Beljaars, A. C. M., Hersbach, H., Hollingsworth, A., Miller, M., Vasiljevic, D.

“…The directional wind turning across the boundary layer in short‐range forecasts made as part of the recent ERA‐40 reanalysis project is compared with…”
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Comparison of trends and low-frequency variability in CRU, ERA-40, and NCEP/NCAR analyses of surface air temperature by Simmons, A. J., Jones, P. D., da Costa Bechtold, V., Beljaars, A. C. M., Kållberg, P. W., Saarinen, S., Uppala, S. M., Viterbo, P., Wedi, N.

“…Anomalies in monthly mean surface air temperature from the 45‐Year European Centre for Medium‐Range Weather Forecasts (ECMWF) Re‐Analysis (ERA‐40) and the…”
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Comparison of ERA40 and NCEP/DOE near-surface data sets with other ISLSCP-II data sets by Betts, Alan K., Zhao, Mei, Dirmeyer, P. A., Beljaars, A. C. M.

“…The fields of 2‐m temperature, relative humidity, precipitation, downward short‐wave and long‐wave radiation, net radiation, and sensible and latent heat flux…”
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The ERA‐Interim reanalysis: configuration and performance of the data assimilation system by Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., Bauer, P., Bechtold, P., Beljaars, A. C. M., van de Berg, L., Bidlot, J., Bormann, N., Delsol, C., Dragani, R., Fuentes, M., Geer, A. J., Haimberger, L., Healy, S. B., Hersbach, H., Hólm, E. V., Isaksen, L., Kållberg, P., Köhler, M., Matricardi, M., McNally, A. P., Monge‐Sanz, B. M., Morcrette, J.‐J., Park, B.‐K., Peubey, C., de Rosnay, P., Tavolato, C., Thépaut, J.‐N., Vitart, F.

“…ERA‐Interim is the latest global atmospheric reanalysis produced by the European Centre for Medium‐Range Weather Forecasts (ECMWF). The ERA‐Interim project was…”
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Underestimation of Latent and Sensible Heat Fluxes above the Agulhas Current in NCEP and ECMWF Analyses by Rouault, M., Reason, C. J. C., Lutjeharms, J. R. E., Beljaars, A. C. M.

“…The Agulhas Current is the major western boundary current of the Southern Hemisphere. South of Africa it retroflects back into the southwest Indian Ocean,…”
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Comparison between archived and off-line diagnosed convective mass fluxes in the chemistry transport model TM3 by Olivié, D. J. L., van Velthoven, P. F. J., Beljaars, A. C. M., Kelder, H. M.

“…The 40‐year reanalysis data set ERA‐40 from the European Centre for Medium‐Range Weather Forecasts includes, unlike ERA‐15, archived convective mass fluxes…”
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The Sensitivity of the ECMWF Model to the Parameterization of Evaporation from the Tropical Oceans by Miller, M. J., Beljaars, A. C. M., Palmer, T. N.

“…Stimulated by the results of a simple SST anomaly experiment with the ECMWF forecast model, a study was carried out to examine the model parameterization of…”
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Errors in parametrizations of convective boundary‐layer turbulent momentum mixing by Brown, A. R., Beljaars, A. C. M., Hersbach, H.

“…The structure of the wind profiles in the convective boundary layer is examined, through large‐eddy simulation, across a wide parameter space. The stability…”
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Evaluation of archived and off-line diagnosed vertical diffusion coefficients from ERA-40 with 222Rn simulations by Olivié, D. J. L., van Velthoven, P. F. J., Beljaars, A. C. M.

“…Boundary layer turbulence has a profound influence on the distribution of tracers with sources or sinks at the surface. The 40-year ERA-40 meteorological data…”
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Flux Parameterization over Land Surfaces for Atmospheric Models by Beljaars, A. C. M., Holtslag, A. A. M.

“…In this paper a summary is given of observations and modeling efforts on surface fluxes, carried out at Cabauw in The Netherlands and during MESOGERS-84 in the…”
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A validation survey of the ECMWF prognostic cloud scheme using LITE by Miller, S. D., Stephens, G. L., Beljaars, A. C. M.

“…Advancements in the parameterization of clouds in global circulation models (GCMs) are contingent upon our ability to validate them on the global scale. We…”
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Diabatic wind speed profiles in coastal regions: comparison of an internal boundary layer (IBL) model with observations by VAN WIJK, A. J. M, BELJAARS, A. C. M, HOLTSLAG, A. A. M, TURKENBURG, W. C

“…A model is presented to transform wind speed observations at a single height over sea or near the coast to any possible location and height in a topographic…”
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The ERA‐40 re‐analysis by Uppala, S. M., KÅllberg, P. W., Simmons, A. J., Andrae, U., Bechtold, V. Da Costa, Fiorino, M., Gibson, J. K., Haseler, J., Hernandez, A., Kelly, G. A., Li, X., Onogi, K., Saarinen, S., Sokka, N., Allan, R. P., Andersson, E., Arpe, K., Balmaseda, M. A., Beljaars, A. C. M., Berg, L. Van De, Bidlot, J., Bormann, N., Caires, S., Chevallier, F., Dethof, A., Dragosavac, M., Fisher, M., Fuentes, M., Hagemann, S., Hólm, E., Hoskins, B. J., Isaksen, L., Janssen, P. A. E. M., Jenne, R., Mcnally, A. P., Mahfouf, J.‐F., Morcrette, J.‐J., Rayner, N. A., Saunders, R. W., Simon, P., Sterl, A., Trenberth, K. E., Untch, A., Vasiljevic, D., Viterbo, P., Woollen, J.

“…ERA‐40 is a re‐analysis of meteorological observations from September 1957 to August 2002 produced by the European Centre for Medium‐Range Weather Forecasts…”
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A mixed spectral finite-difference model for neutrally stratified boundary-layer flow over roughness changes and topography by BELJAARS, A. C. M, WALMSLEY, J. L, TAYLOR, P. A

“…A linear model for neutral surface-layer flow over complex terrain is presented. The spectral approach in the two horizontal coordinates and the…”
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A new parametrization of turbulent orographic form drag by Beljaars, Anton C. M., Brown, Andrew R., Wood, Nigel

“…A new parametrization is presented for the representation in large‐scale models of turbulent form drag due to subgrid orography with horizontal scales smaller…”
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An Improved Land Surface Parameterization Scheme in the ECMWF Model and Its Validation by Viterbo, Pedro, Beljaars, Anton C. M.

“…A new version of the ECMWF land surface parameterization scheme is described. It has four prognostic layers in the soil for temperature and soil moisture, with…”
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On the memory of wind standard deviation for upstream roughness by BELJAARS, A. C. M

“…Large eddies in the outer part of the atmospheric boundary layer contribute to the variance of the horizontal velocity fluctuations near the surface. Because…”
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Cabauw Experimental Results from the Project for Intercomparison of Land-Surface Parameterization Schemes by Chen, T. H., Henderson-Sellers, A., Milly, P. C. D., Pitman, A. J., Beljaars, A. C. M., Polcher, J., Abramopoulos, F., Boone, A., Chang, S., Chen, F., Dai, Y., Desborough, C. E., Dickinson, R. E., Dümenil, L., Ek, M., Garratt, J. R., Gedney, N., Gusev, Y. M., Kim, J., Koster, R., Kowalczyk, E. A., Laval, K., Lean, J., Lettenmaier, D., Liang, X., Mahfouf, J.-F., Mengelkamp, H.-T., Mitchell, K., Nasonova, O. N., Noilhan, J., Robock, A., Rosenzweig, C., Schaake, J., Schlosser, C. A., Schulz, J.-P., Shao, Y., Shmakin, A. B., Verseghy, D. L., Wetzel, P., Wood, E. F., Xue, Y., Yang, Z.-L., Zeng, Q.

“…In the Project for Intercomparison of Land-Surface Parameterization Schemes phase 2a experiment, meteorological data for the year 1987 from Cabauw, the…”
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