Surface assimilation (presentation, March 2008)
Monday 31 March 2008 par
Presentation of Rafiq Hamdi during the 2nd AROME training course, Lisbon, 4-7 March 2008: "Surface assimilation: status and plans" by Rafiq Hamdi with help from JF Mahfouf, F. Bouyssel and L. Auger and input from Adam Dziedzic and Karim Bergaoui.
- The global data assimilation system
- Surface analysis and upperair analysis
- Surface analysis by Optimum Interpolation using CANARI
- Surface Parameterization scheme (ISBA)
- Soil moisture
- Available observations for surface analysis
- Optimum Interpolation and CANARI software
- Moving away from Optimum Interpolation using SURFEX
- Vertical interpolation scheme in SURFEX
- The Extended Kalman Filter
- The SEKF for Wp analysis within SURFEX
- Work to be done
- A SEKF is now available within SURFEX for the analysis of soil moisture but needs analysis increments from a 2D spatial interpolation tool like CANARI OI.
- The first results over ALADINFrance (done by JF Mahfouf) are encouraging.
- Reduce remaining inconsistencies between SURFEX and ALADINISBA.
- Couple the soil analysis with the atmospheric analysis to allow feedback.
- Improve the efficiency of offline SURFEX version.
- The vertical interpolation scheme in the surface boundary layer.
- The use of SURFEX should help moving from a SEKF to an Ensemble Kalman Filter
- Inclusion of a microwave emission model within SURFEX.
- Inclusion of improved radiative and precipitation forcing.