Banner
GmapDoc website
Slogan du site
Descriptif du site
Surface assimilation (presentation, March 2008)
Article published on 31 March 2008

by Patricia

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.

  • Introduction
    • The global data assimilation system
    • Surface analysis and upperair
      analysis
  • Surface analysis by Optimum Interpolation using CANARI
    software
    • Surface Parameterization scheme (ISBA)
    • Soil moisture
    • Available observations for surface analysis
    • Optimum Interpolation and CANARI software
  • Moving away from Optimum Interpolation using SURFEX
    software
    • 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.

Documents
Surface Assimilation 1.7 MiB / PDF