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Hermann Asensio

Consolidation of the software for the generation of External Parameters and extension with new raw data sets. Hermann Asensio. Outline. Software for the generation of External Parameters (COLBOC Task 2) Consolidation and extension of database (COLOBOC Task 3).

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Hermann Asensio

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  1. Consolidation of the software for the generation of External Parameters andextension with new raw data sets Hermann Asensio

  2. Outline • Software for the generation of External Parameters (COLBOC Task 2) • Consolidation and extension of database (COLOBOC Task 3)

  3. Overall description of the External Parameter System GLOBE orography external parameters on target grid DSMW soil data GLC2000 land use

  4. Software for the generation of External Parameters (COLBOC Task 2)

  5. ksh scripts Fortran programs (Fortran 2003/ Fortran 95) user defined grid Icon,GME COSMO ksh scripts Fortran programs global icosahedral grid ksh scripts Fortran programs limited area domain COSMO GME current status external parameter generation new library external parameter generation

  6. Software for the generation of External Parameters: technical development • Software requirements specifications written • new Software Code basis (Fortran 2003 Standard) according to the software requirement specifications • technical documentation with doxygen (HTML and/or Latex style documentation generated with the help of “tags” from comments in the Fortran source code) • NetCDF as basic file format for Input/Output • GRIB output with ECMWF “GRIB_API”

  7. Software for the generation of External Parameters: open topics • Version control system and distribution of software (and raw datasets) • Webinterface for standard requests for the generation of external parameters for arbitrary domains (prototype available) • update documentation

  8. Consolidation and extension of database (COLOBOC Task 3)

  9. Current external parameter fields for the COSMO model, total 15 fields planned extensions for the COSMO model, total 30 fields NDVI, NDVI_MX, NDVI_RATIO, AER_BC, AER_DUST, AER_SO4, AER_SS, T2M_CL, URBAN, RSMIN, EMISS_RAD, FR_LAKE, DEPTH_LK, SLOPE_ASP, SLOPE_ANG, HORIZON, SKYVIEW HH, FR_LAND, SOILTYP, Z0, SSO_STDH, SSO_GAMMA, SSO_THETA, SSO_SIGMA, PLCOV_MN, PLCOV_MX, LAI_MN, LAI_MX, FOREST_D, FOREST_E, ROOTDP HH, FR_LAND, SOILTYP, Z0, SSO_STDH, SSO_GAMMA, SSO_THETA, SSO_SIGMA, PLCOV_MX, LAI_MX, FOREST_D, FOREST_E, ROOTDP Additional external parameters

  10. GLOBE DSMW GLC2000 Currently used raw data for external parameters

  11. Additional raw datasets • NDVI (SEAWiFS) • climatology of near surface temperature (CRU)

  12. Additional external parametersNormalized Differential Vegetation Index (NDVI)

  13. further external parameter fields • Fraction Lake FR_LAKE • Lake Depth DEPTH_LK (currently available only for COSMO-EU)

  14. Consolidation and extension of database: open topics • uncertainties in raw data sets and look-up tables

  15. Caveats Problem: The Olympic Winter Games 2014 in Sochi, Russian Federation: The map The external parameters Sochi Most raw data sets provide values (for soiltype etc.) But the land-sea-mask of the GLC2000 data set gives sea water!

  16. Caveats The external parameters are only as good as the available raw data sets. GLC2000 land use classes GLCC USGS land use / land cover system

  17. GME ni 256 based on GLCC GME ni 256 based on GLC2000 COSMO-DE based on GLC2000 COSMO-EU based on GLC2000 Evergreen Forest:GLC2000 vs. GLCC

  18. mapping of land use classes to external parameters Lookup Tables DWD routine lookup table RSMIN Table a1 RSMIN after Dorman and Sellers (1989) Table a2 RSMIN after Masson (2003) Example: Minimal stomatal resistance (RSMIN) values for land use class “grassland”

  19. Consolidation and extension of database: open topics • smoothing of orography in EXTPAR for parameters for sub-grid scale orography effects (proper scale separation for Z0 / SSO ?) • External parameters for orographic radiation correction • consolidate raw datasets: • new global, gridded lake database (Ekaterina Kourzeneva, 2010) • Harmonized World Soil Database • MODIS data for surface background albedo • ETOPO1 or ASTER DEM for orography • Globcover for land use data

  20. Thank you for your attention!

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