Page History

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• This release provides support for octahedral reduced Gaussian grids
• This release requires grib_api/1.14.2
• Tested against BUFR tables version 000406, please check also changes of the previous version 000405

• Changes to HIRLAM functions interface, CHARACTER*1 HTYPE as new argument as follows:

  • HIRLAM(L12PNT,OLDFLD,KOUNT,KGAUSS,HTYPE,AREA,POLE,GRID,NEWFLD,KSIZE,NLON,NLAT)
  • HIRLSM(L12PNT,OLDFLD,KOUNT,KGAUSS,HTYPE,AREA,POLE,GRID,NEWFLD,KSIZE,NLON,NLAT)
  • HIRLAMW(L12PNT,OLDFLDU,OLDFLDV,KOUNT,KGAUSS,HTYPE,AREA,POLE,GRID,NEWFLDU,NEWFLDV,KSIZE,NLON,NLAT)
• HTYPE should be one of:
  • 'R' for "quasi-regular" reduced Gaussian grid (equivalent to 'N')
  • 'O' for octahedral reduced Gaussian grid, or
  • 'F' for regular Gaussian grid
  • 'U' for a user-defined gaussian grid
• New HSH2GG function, controlling SH interpolation to Gaussian grids, replaces:
  • HSP2GG
  • HSP2GG2
  • HSP2GG3
• New INTOUT parameter name CHARACTER*(*) HPARN "gridname", interpreting parameter value CHARACTER*(*) CHARV, describing a list of supported grids as in Gaussian Grids supported by MARS and ProdGen. This is the available method to set interpolation to octahedral reduced Gaussian grids.

• Build system:

  • conditional compilation of components (interpolation, GRIBEX and BUFR)

  • revision of definitions and code reusing, stricter compilation options

• FFTW is an optional Fast Fourier Transform library dependency, required for SH to octahedral reduced Gaussian grid interpolations
• Improved interpolation testing
• Added new HIRLAM LSM masks for specific reduced Gaussian grids:
  • N64, N96, N512, N128
  • O64, O80, O96, O128, O160, O200, O256, O320, O400, O512, O640, O1024, O1280
• When using INTF2  (e.g. via MARS),  GRIB "latitudeOfLastGridPoint" for wave model interpolations in some cases was encoded wrongly to -79.0xx and is now corrected to be -90+0.5*inc (see 

  Jira
  server ECMWF Software Support columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key MARS-492

  )

Improvement

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-112

  - add support for new octahedral reduced gaussian grid - MARS and Metview

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-159

  - add support for new octahedral reduced gaussian grid (as output)

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-177

  - support RGG/octahedral grids (non-rotated)

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-178

  - support RGG/octahedral grids (HIRLAM)

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-179

  - support RGG/octahedral grids (LSM-dependant parameters)

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-183

  - support gridname keyword

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-185

  - add sh to octahedral interpolation

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-190

  - tested interpolation on N64 grid

• Jira
  server ECMWF Software Support serverId 267ffb4b-b041-3e3e-bee4-0486d22e0a7f key EMOS-201

  - tested against BUFR tables version 000406

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