A joint ECMWF-EUMETSAT/GRAS SAF workshop on the assimilation of GPS radio-occultation (GPS RO) measurements was organised at the Centre. The Workshop was held from 16 to 18 June 2008.
Description
The workshop considered the applications of GPS radio occultation measurements in operational numerical weather prediction and reanalysis/climate studies. GPS radio occultation measurements are an important new addition to the global observing network: they have good vertical resolution, an all weather capability and long term stability. Forecast impact studies at a number of operational numerical weather prediction centres have demonstrated that they provide useful temperature information. The measurements can be assimilated without bias correction and therefore have the potential to improve the bias correction of satellite radiance measurements. Recent studies have also shown that they provide useful information on the height of the planetary boundary layer. Furthermore, the long term stability of the GPS radio occultation measurements suggests that they will have important applications in climate signal detection and model testing.
The topics for the workshop will include: status of current and future missions, the latest developments in assimilation methods employed at the operational centres, the retrieval planetary boundary layer information and recent work on the reanalysis and climate applications.
Programme
Presentations
| General issues | |
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An introduction to GPS radio occultation and its use in NWP John Eyre (Met Office) |
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The work of the GRAS SAF Kent Lauritsen (DMI) |
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| Status of Missions | |
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COSMIC status and prospects for COSMIC-2 Bill Kuo (UCAR COSMIC) |
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GRAS status and future European GPS radio occultation missions Axel Von Engeln (EUMETSAT) |
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CHAMP, GRACE, SAC-C, TerraSAR-X/TANDEM-X: Science results, status and future prospects Jens Wickert (GeoForschungsZentrum Potsdam) |
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LEO-LEO occultation measurements: Concept and possible missions E.R. Kursinski (University of Arizona) |
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| Assimilation of GPS Radio Occultation Measurements | |
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Assimilation of GPS radio occultation measurements at NCEP Lidia Cucurull (JCSDA) |
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Assimilation of GPS radio occultation measurements at Météo-France Paul Poli (CNRM) |
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Assimilation of GPS radio occultation measurements at the Met Office Michael Rennie (Met Office) |
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Assimilation of GPS radio occultation measurements at the Meteorological Service of Canada Josep Aparicio (Meteorological Service Canada) |
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Assimilation of GPS radio occultation measurements at ECMWF Sean Healy (ECMWF) |
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Impact of GPS radio occultation measurements on severe weather prediction in Asia Ching-Yuang Huang (University of Taiwan) |
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| PBL and Altimetry Applications | |
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Planetary boundary layer information from GPS radio occultation measurements Chi Ao (JPL) |
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Applications of the reflected signals found in GNSS radio occultation events Estel Cardellach (Campus UAB) |
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| Climate/Reanalysis Applications | |
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Testing Climate models with GPS radio occultation measurements Stephen Leroy (Harvard University) |
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Climate signal detection with GPS radio occultation measurements Gottfried Kirchengast (University of Graz) |
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Reanalysis applications of GPS radio occultation measurements Dick Dee (ECMWF) |
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Working groups
Posters
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The GRAS SAF Radio Occultation Processing Package David Offiler |
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GPS RO data assimilation in HIRLAM model Elena Padorno |
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Assimilation of Radio Occultation Data in the GME Global Atmospheric Model of the German Weather Service Detlef Pingel |
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Monitoring twenty-first century climate using GPS - Radio occultation bending angles Mark Ringer |
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Long-term application and evaluation of IAPP using global radiosonde and CHAMP measurements Marc Schröder |
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Proceedings
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Planetary boundary layer information from GPS radio occultation measurements C O Ao |
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Applications of the reflected signals found in GNSS radio occultation events E Cardellach |
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Assimilation of GPS radio occultation measurements at the Meteorological Service of Canada J M Aparicio |
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Assimilation of GPS radio occultation measurements at NCEP L Cucurull |
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Reanalysis applications of GPS radio occultation measurements D Dee |
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An introduction to GPS radio occultation and its use in numerical weather prediction J R Eyre |
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Creating a consistent radio occultation data base for climate studies in the upper troposphere and lower stratosphere U Foelsche |
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Assimilation of GPS radio occultation measurements at ECMWF S Healy |
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Impact of GPS radio occultation measurements on severe weather prediction in Asia C-Y Huang |
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COSMIC status and prospects for COSMIC-2 Y-H Kuo |
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The Active Temperature Ozone and Moisture Microwave Spectrometer (ATOMMS) E R Kursinski |
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GRAS SAF project and products K B Lauritsen |
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Testing climate models with GPS radio occultation measurements S S Leroy |
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Assimilation of GPS radio occultation measurements at Météo-France P Poli |
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The assimilation of GPS radio occultation measurements at the Met Office M P Rennie |
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GRAS status and future European GPS radio occultation missions A Von Engeln |
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CHAMP, GRACE, SAC-C, TerraSAR-X/TANDEM-X: Science results, status and future prospects J Wickert |
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