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OverseerFM release version 6.5.5 (N₂O and CH₄ update)

Helpdesk
  • Updated

We released an update to OverseerFM on 31 May 2024.

The update of the Overseer model to version 6.5.5 includes features enhancements to the modelling of nitrous oxide (N₂O) emissions and methane (CH₄) emissions from effluent management systems.  

The N₂O enhancements provide more accurate and diverse modelling by:

  • Incorporating the interaction between animal type and the slope of pasture blocks.
  • Refining the treatment of organic fertilisers.
  • Improving the way the model considers crop residues and root biomass

The CH₄ enhancements provide more accurate and diverse modelling by:

  • Aligning with the AIM methodology, including improvements in assumptions about anaerobic conditions in effluent ponds, standardized holding pond conditions and sludge spread on block emissions.
  • Correcting minor CH₄ modelling abnormalities.

The calculation of maintenance fertiliser for pastoral blocks has also been refined.

For more information, please see the release notes that are attached below.

Please do not hesitate to contact our helpdesk helpdesk@overseer.org.nz if you need any help or contact science@overseer.org.nz if you would like to know more about the science behind this update. 

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