Document ID: chunk:federal_register_of_legislation:F2021L01696:clause:1_32
Version: federal_register_of_legislation:F2021L01696
Segment Type: clause
Provision Reference: sch 1 cl 32
Character Range: 155441–156976

32  Change in soil organic carbon stock in the CEA with a specified probability of exceedance for a reporting period
  Work out the change in soil organic carbon stock for a CEA for a reporting period between the baseline sampling round and the last subsequent sampling round for the reporting period associated with a specified probability of exceedance (the ), in tonnes of carbon, using the following equation:
  equation 69

  where:
 is the value for , for the CEA for the reporting period, in tonnes of soil organic carbon, worked out using equation 64.
 is the value for SE for the CEA given by equation 65.
 is the value of the quantile function (inverse distribution function) for the t distribution with the value for alpha () set out in the Supplement and with the value for the degrees of freedom df worked out using equation 66.
Note: An alpha () value of 0.4 would give a 60% probability of exceedance.

             is equal to:
 (a) if the calculation occurs for the baseline and first subsequent sampling rounds for the CEA—0.25;

            Note: The 0.25 multiplier is a temporary discount to the creditable amount of change in soil organic carbon stock due to the use of only 2 measurements (the effect of climatic influences relative to management-induced changes is assumed to be less influential after three carbon stock estimations and the discount no longer applies). After 3 or more estimations, credits withheld due to the discount will be returned if carbon increases are maintained.
 (b) otherwise—zero.