1.20. JULES version 4.5 Release Notes

The JULES vn4.5 release consists of 31 tickets from 19 authors across 35 commits.

Full details of the tickets committed for JULES vn4.5 can be found on the JULES shared repository Trac system.

1.20.1. Science changes

  • UKCA dry deposition working with 13 surface tiles
  • Check litter flux carbon balance
  • Allow litter carbon fluxes from variable numbers of PFTs
  • Improved seasonal cycle of soil respiration: switch l_soil_resp_lev2 alters how soil temperature and moisture are used for respiration calculation.
  • Added parameters to trait physiology for nitrogen in wood and roots - see nr_io, nsw_io and hw_sw_io.
  • INFERNO model of fire emissions and burnt area - see l_inferno
  • Option to represent crops using triffid - see l_trif_crop
  • Remove MORUSES hard-wired roof coupling
  • Add diagnostic for canopy FAPAR (Fraction of Absorbed Photosynthetically Active Radiation).
  • JULES-CN: enabled nitrogen limitation of NPP - see l_nitrogen
  • Added the FLake lake model into JULES (for UM use)

1.20.2. Technical changes

  • Variable renaming to support soil tiling
  • Add JASMIN as a supported system for rose-stem jobs
  • Fix Cray compiler warnings
  • Protect print statements from the TRIP river routing code with PrintStatus

1.20.3. Bugs fixed

  • Fix ozone diagnostics in JULES

1.20.4. Documentation updates

Coding standards, and documentation can be viewed on the ‘github page <http://jules-lsm.github.io/>_’.

  • Update to coding standards to reflect and protect variable name changes
  • Represent crops using TRIFFID
  • Nitrogen trait physiology
  • Check litter C flux carbon balance
  • kgC and kgN in netCDF units metadata
  • adding nfita to hydrology namelist
  • add FAPAR diagnostic