1. FCDR generation: Dealing with multi-references - HIRS/2 + AIRS + IASI
- Change title to more general one.
- Focus can stay on the HIRS work, however, given the character of the workshop an introduction on the VIS/Near-infrared work is also needed.
Viju John , Rob Roebeling, and Tim Hewison

2. Objectives
To develop Fundamental Climate Data Record (FCDR) of METEOSAT heritage channels (re-calibrate and inter-inter-calibrate)
WV channel – ~6.5 µm, sensing water vapour in the upper troposphere
IR channel – ~10.2 µm, sensing surface emission
MVIRI on MFG + SEVIRI on MSG
1982 – present; i.e., 30+ years of time series which suffice climate analyses
New FCDR data set will include re-calibrated radiances and coefficients to convert back to original radiances and also to obtain inter-calibrated radiances
The new data files will be written in NetCDF4 format

3. Recalibration procedure
HIRS/2
AIRS
IASI

4. Transferring reference: Double Differencing
More explanation needed
Delta 4