This page provides background information about AMV usage in NWP. For general background on AMVs see the International Winds Working Group website.
Use of AMVs at different centres
At the 8th International Winds Workshop in 2006 it was agreed that the NWP SAF would host information on how AMVs are used at different NWP centres. More centres will be added as details become available.
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Centre
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Last checked/updated
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April 2023
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June 2023
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April 2023
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April 2023
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April 2023
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April 2023
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To contribute details on AMV usage at your NWP centre please register your interest using the Feedback Form.
Impact experiments and other studies
AMVs are used in many NWP models worldwide. Much research and development work is carried out to adapt to new AMV products and to improve the way the data is used. For more information on the current research activities please visit the IWWG wiki pages
| Impact Experiments | |||||
|---|---|---|---|---|---|
|
Experiment
|
Location
|
Experiment details
|
Main results
|
Date report produced
|
More details
|
|
New AMV error scheme
|
Met Office
|
6-h
4DVAR 2007 |
Small positive impact
|
Apr 2008
|
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|
Impact of MODIS polar winds
|
Met Office
|
6-h
3DVAR 2004 |
Positive impact
|
Jun 2006
|
|
|
AMV superobbing scheme
|
Met Office
|
6-h
3DVAR 2004 |
Neutral to slightly negative impact.
|
Sep 2004
|
|
|
Impact of MODIS Polar Winds
|
ECMWF
|
12-h
4DVAR 2001-2 |
Positive forecast impact, particularly
over poles and Europe. Neutral impact in SH. |
Oct 2003
|
|
|
Mesoscale Upgrade – including assimilation
of Meteosat-6 rapid scan winds |
Met Office
|
3DVAR Mesoscale
2003 |
Meteosat-6 not trialled independently.
Decision to use based on monitoring. |
Feb 2004
|
|
|
Doubling current observation errors
applied to all satellites |
Met Office
|
6-h 3DVAR
2001 |
Most forecast parameters neutral
to positive. Best impact in SH. Resulted in operational change |
Jun 2002
|
|
|
Impact of AMVs from
Meteosat-5 over the Indian Ocean |
ECMWF
|
12-h
4DVAR 2000-1 |
Neutral to positive forecast impact,
particularly positive in SH. Met-5 winds strengthen the tropical easterly jet |
||
|
Meteosat high-resolution visible & water vapour winds, making use of the Quality Indicator, and including GOES high-density winds
|
Met Office
|
6-h
3DVAR 1999 |
Unable to obtain positive impact
in any hemisphere using winds so dense |
Mar 2000
|
|
| Other Studies | ||||
|---|---|---|---|---|
|
Aim
|
Location
|
Main results
|
Date report produced
|
More details
|
|
Meteosat-8 AMV height assignment
|
Met Office
|
Investigation of Meteosat-8 AMV height
assignment including comparison with other cloud top pressure datasets. |
Jan 2006 |
|
|
Impact of Solar Stray Light
|
ECMWF
|
Impact of solar stray light on
Meteosat winds close to local midnight could be identified for extended periods around the eclipse. |
Dec 2002 |
|
|
Spatial Structure of Observation Errors
|
ECMWF
|
Collocation study over 1 year showed
significant AMV spatial error correlations. |
Sept 2002 |
|