Page History

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• • New model-error covariance matrices for aerosol and chemistry at 137 levels.

Observations

• • TBC

Model

• • Updated to use new CAMS_GLOB emissions inventory.
    
  • Diurnal cycle for biomass-burning emissions updated to match that assumed within GFAS.
  • Diurnal cycle for SOA production introduced to reduce night-time overestimation.
  • New online dust emission scheme (Nabat et al., 2012).
  • Sea-salt production over freshwater lakes eliminated.
  • New nitrate and ammonium aerosol species, coupled to the gas-phase nitrogen chemistry. See new model parameters below
    

  • Sulfur species (SO2 and SO4) coupled between chemistry and aerosol schemes. See discontinued parameters below.

  • Online calculation of dry deposition velocities for trace gases. (This was already in place for aerosols in 45r1.)
  • Updates to wet deposition parameterisations. This brings greater distinction between scavenging by liquid and ice, and harmonises the treatment for aerosols and trace gases.
  • Updates to chemical reaction rates.

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