Use of satellite data (presentation, 2001)
June 2002
Presentation of Elisabeth Gérard during the ALATNET training course on Data Assimilation in Gourdon, 11-22 June 2001.
Contents :
- 1. Influence of satellite data in NWP
- TEMP, SATOB, SSM/I, ATOVS
- ARPEGE grid
- Illustration of the OSEs
- Short range in Northern Hemisphere
- Medium range
- Principle of remote sensing
- Active remote sensing
- Satellite picture
- Radio occultation geometry
- Passive remote sensing
- Solar Backscatter Ultraviolet Spectral Radiometer
- Information content
- Radiative transfer equation
- Information content
- Problems due to complex H
- Bias correction & contamination
- Use of preprocessed ATOVS data at Météo-France
- Compression of the data with future instruments
- DRM method
- SVD method
- Iterative method
- Jacobian method
- Illustration for IASI
- IASI on Metop
- Remote sounding from IASI
- Midlatitudes - T
- Accuracy / No. of channels
- Vert. resolution / No. of channels
- Channel selection - Midlatitudes
- Statistics on 518 SODA profiles
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