نتایج جستجو برای: ecmwf

تعداد نتایج: 1644  

2017
Florin Onea Liliana Rusu

In the present work the Black Sea wave climate is assessed using a total of 38 years of data (1979–2016). As a first step, the long-term variations of the main wave parameters were evaluated using data provided by the European Center for Medium-Range Weather Forecasts (ECMWF). Based on these values, the nearshore and offshore conditions from the Black Sea were evaluated. Moreover, the Sea of Az...

2007
Christoph Rüdiger Jean-Christophe Calvet Jean-François Mahfouf Lionel Jarlan Gianpaolo Balsamo Joaquin Muñoz Sabater

a Météo France, Centre National de Recherches Météorologiques (CNRM/GAME), URA CNRS 1357, Toulouse, France b Centre d’Etude Spatiale de la Biosphère (Cesbio), Toulouse, France c Institut de Recherche pour le Développement (IRD), Toulouse, France d European Centre for Medium-Range Weather Forecasting (ECMWF), Reading, United Kingdom e Centre Européen de Recherche et de Formation Avancée en Calcu...

Journal: :Quarterly Journal of the Royal Meteorological Society 2012

Journal: :Tellus A: Dynamic Meteorology and Oceanography 1990

Journal: :Tellus A: Dynamic Meteorology and Oceanography 1987

2001
T. Meissner D. Smith F. Wentz

To evaluate the scalar ocean surface wind speeds obtained from the Special Sensor Microwave Imager (SSM/I) we compare them over the time period from July 1987 through December 1997 with those from two global analyses: the NCEP/NCAR Annual Reanalysis and the ECMWF TOGA Global Surface Analysis. We perform a statistical analysis for the whole globe and present time series analyses for selected geo...

2010
EMANUEL DUTRA GIANPAOLO BALSAMO PEDRO M. A. MIRANDA ANTON BELJAARS CHRISTOPH SCHÄR KELLY ELDER

A new snow scheme for the European Centre for Medium-Range Weather Forecasts (ECMWF) land surface model has been tested and validated. The scheme includes a new parameterization of snow density, incorporating a liquid water reservoir, and revised formulations for the subgrid snow cover fraction and snow albedo. Offline validation (covering a wide range of spatial and temporal scales) includes s...

2009
J. Morland M. Collaud Coen K. Hocke P. Jeannet C. Mätzler

Integrated Water vapour (IWV) has been measured since 1994 by the TROWARA microwave radiometer in Bern, Switzerland. Homogenization techniques were used to identify and correct step changes in IWV related to instrument problems. IWV from radiosonde, GPS and sun photometer (SPM) was used in the homogenisation process as well as partial IWV columns between valley and mountain weather stations. Th...

2010
K. Houchi A. Stoffelen G. J. Marseille J. De Kloe

The climatology of atmospheric horizontal wind and its vertical gradient, i.e. wind-shear, is characterized as a function of climate region. For a better representation of the average atmospheric wind and shear and their variabilities, high-resolution radiosonde wind profiles up to about 30 km altitude are compared with collocated operational ECMWF-model ShortRange Forecast winds. Statistics of...

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