ECMWF: Patricia de Rosnay , Sebastien Garrigues , Ewan Pinnington , Peter Weston , David Fairbairn 

TU Wien: @sebastian.hahn@geo.tuwien.ac.at, User wolfgang dot wagner at geo dot tuwien dot ac dot at 


Agenda

1- introduction and context (Patricia)

2- Tour de table

3- status of observation operator development (Sébastien, slides)

4- Discussion points

  • Difficult to aim for a single forward operator that works for everything
  • Global vs local NN. Difficult to have a global NN that works globally even accounting for vegetation
  • Important to filter out frozen soils
  • RMS of 2dB is still very large compared to the signal. The measurement noise is 0.2dB.  It would be useful to have RMS closer to the measurement noise. At a given location in the temporal domain, the main driving factor is SM.  Spatial approach give more information on vegetation. Subsurface scattering: issue everywhere. The best variable to predict is the coarse factor. 
  • Also need to account for slope and incidence angle computation
  • Trend in backscatter data related to land cover changes
  • ASCAT is also affected by RFI issues

5- Meeting notes 


Meeting notes:

Slides: