Use of wind data in global modelling
The European Centre for Medium Range Weather Forecasts (ECMWF) is producing operational global analyses every 6 hours and operational global forecasts every day from the 12Z analysis. How the wind data are used in the ECMWF golbal analysis is described. For each current wind observing system, its ab...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930072865 2023-05-15T17:34:16+02:00 Use of wind data in global modelling Pailleux, J. Unclassified, Unlimited, Publicly available JAN 1, 1985 http://ntrs.nasa.gov/search.jsp?R=19930072865 unknown http://ntrs.nasa.gov/search.jsp?R=19930072865 Accession ID: 93N70312 No Copyright CASI 47 NASA. Goddard Space Flight Center, Proceedings of the NASA Symposium on Global Wind Measurements; p 89-93 1985 ftnasantrs 2012-02-15T20:16:44Z The European Centre for Medium Range Weather Forecasts (ECMWF) is producing operational global analyses every 6 hours and operational global forecasts every day from the 12Z analysis. How the wind data are used in the ECMWF golbal analysis is described. For each current wind observing system, its ability to provide initial conditions for the forecast model is discussed as well as its weaknesses. An assessment of the impact of each individual system on the quality of the analysis and the forecast is given each time it is possible. Sometimes the deficiencies which are pointed out are related not only to the observing system itself but also to the optimum interpolation (OI) analysis scheme; then some improvements are generally possible through ad hoc modifications of the analysis scheme and especially tunings of the structure functions. Examples are given. The future observing network over the North Atlantic is examined. Several countries, coordinated by WMO, are working to set up an 'Operational WWW System Evaluation' (OWSE), in order to evaluate the operational aspects of the deployment of new systems (ASDAR, ASAP). Most of the new systems are expected to be deployed before January 1987, and in order to make the best use of the available resources during the deployment phase, some network studies are carried out at the present time, by using simulated data for ASDAR and ASAP systems. They are summarized. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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47 |
spellingShingle |
47 Pailleux, J. Use of wind data in global modelling |
topic_facet |
47 |
description |
The European Centre for Medium Range Weather Forecasts (ECMWF) is producing operational global analyses every 6 hours and operational global forecasts every day from the 12Z analysis. How the wind data are used in the ECMWF golbal analysis is described. For each current wind observing system, its ability to provide initial conditions for the forecast model is discussed as well as its weaknesses. An assessment of the impact of each individual system on the quality of the analysis and the forecast is given each time it is possible. Sometimes the deficiencies which are pointed out are related not only to the observing system itself but also to the optimum interpolation (OI) analysis scheme; then some improvements are generally possible through ad hoc modifications of the analysis scheme and especially tunings of the structure functions. Examples are given. The future observing network over the North Atlantic is examined. Several countries, coordinated by WMO, are working to set up an 'Operational WWW System Evaluation' (OWSE), in order to evaluate the operational aspects of the deployment of new systems (ASDAR, ASAP). Most of the new systems are expected to be deployed before January 1987, and in order to make the best use of the available resources during the deployment phase, some network studies are carried out at the present time, by using simulated data for ASDAR and ASAP systems. They are summarized. |
format |
Other/Unknown Material |
author |
Pailleux, J. |
author_facet |
Pailleux, J. |
author_sort |
Pailleux, J. |
title |
Use of wind data in global modelling |
title_short |
Use of wind data in global modelling |
title_full |
Use of wind data in global modelling |
title_fullStr |
Use of wind data in global modelling |
title_full_unstemmed |
Use of wind data in global modelling |
title_sort |
use of wind data in global modelling |
publishDate |
1985 |
url |
http://ntrs.nasa.gov/search.jsp?R=19930072865 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
CASI |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19930072865 Accession ID: 93N70312 |
op_rights |
No Copyright |
_version_ |
1766133051893481472 |