<p>The most well-known calculator for estimating GHG emissions in farm is using is the nutrient budgeting tool OVERSEER&reg;.</p>
<p>This uses nitrogen inputs and outputs, as well as the number and productivity of animals, to calculate the unique nutrient budget of a farm, and makes broad inferences from nutrients to greenhouse gases using simplified relationships.</p>
<p>OVERSEER&reg; can only provide an approximate farm-level greenhouse gas assessment, since it does not fully reflect all the variables that can affect the unique greenhouse gas budget of a farm (e.g. the specific soil moisture profile and microclimate on the farm).</p>
<p><a href="https://www.overseer.org.nz/"><strong>Read more</strong></a> (external website)</p>