meta data for this page
  •  

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
general:projections:wam-scenario [2021/12/01 16:57] braunsgeneral:projections:wam-scenario [2022/03/07 12:32] (current) – Changes as requested in mail from 04.03.2022 (B.Brauns) gniffke
Line 99: Line 99:
  
  
-   * Air scrubber systems in 75 per cent of the agricultural operations regulated under IED (permitted after type of procedure G in the 4<sup>th</sup> BImSchV), 25 per cent of the agricultural IED operations reduce 40 per cent of emissions through further system-integrated measures in housing.\\ Air scrubber systems for pigs reduce the NH<sub>3</sub> emissions in the stable by 80 per cent on average; this percentage is retained. A reduction rate of 70 per cent is assumed for air scrubber systems for poultry. It should be noted that the reductions were not calculated for turkeys, as these are excluded from the requirement in the Technical Instructions on Air Quality Control (TA-Luft).\\ \\ __Assumptions to model the mitigation potential in 2030:__ For pigs and poultry, the mean reduction performance from air scrubber systems and “further system-integrated measures” was calculated (pigs: 0.75 * 80 % + 0.25 * 40 % = 70 %; poultry: 0.75 * 70 % + 0.25 * 40% = 62.5 %) and with this the emissions of the animals in agricultural IED operations are calculated as if they were air scrubber systems with a correspondingly lower output.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 13.61\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 16.77+   * Air scrubber systems in 75 per cent of the agricultural operations regulated under IED (permitted after type of procedure G in the 4<sup>th</sup> BImSchV), 25 per cent of the agricultural IED operations reduce 40 per cent of emissions through further system-integrated measures in housing.\\ Air scrubber systems for pigs reduce the NH<sub>3</sub> emissions in the stable by 80 per cent on average; this percentage is retained. A reduction rate of 70 per cent is assumed for air scrubber systems for poultry. It should be noted that the reductions were not calculated for turkeys, as these are excluded from the requirement in the Technical Instructions on Air Quality Control (TA-Luft).\\ \\ __Assumptions to model the mitigation potential in 2030:__ For pigs and poultry, the mean reduction performance from air scrubber systems and “further system-integrated measures” was calculated (pigs: 0.75 * 80 % + 0.25 * 40 % = 70 %; poultry: 0.75 * 70 % + 0.25 * 40% = 62.5 %) and with this the emissions of the animals in agricultural IED operations are calculated as if they were air scrubber systems with a correspondingly lower efficiency.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 13.61\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 16.77
  
  
Line 124: Line 124:
  
  
-   * Organic farming on 20 per cent of the area (Measure 3.4.5.3 of the Climate Protection Programme 2030)\\ Underlying changes were taken from parallel projections for the 2021 Projection Report. With an increased expansion of organic farming to 20 per cent of the agricultural area by the year 2030 (at the same time the goal of the German Sustainability Strategy), in comparison to a more moderate expansion to 14 per cent, there is in particular a reduction in the mineral fertilizer applied. In addition, projected increase of animal performance is slightly reduced compared to the baseline. There are further changes for the cultivated areas and yields. However, the latter have no additional impact on the level of NH<sub>3</sub> emissions.\\ \\ __Assumptions to model the mitigation potential in 2030:__ A new input data set concerning mineral fertilizers, animal performance, cultivated areas and yields was taken from the GHG projections. Otherwise it was calculated as in measure 3.9.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 0.30 (through animal performance), 2.29 (through less mineral fertilizers)\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 60.28+   * Organic farming on 20 per cent of the area (Measure 3.4.5.3 of the Climate Protection Programme 2030)\\ Underlying changes were taken from parallel projections for the 2021 Projection Report. With an increased expansion of organic farming to 20 per cent of the agricultural area by the year 2030 (at the same time the goal of the German Sustainability Strategy), in comparison to a more moderate expansion to 14 per cent, there is in particular a reduction in the mineral fertilizer applied. In addition, projected increase of animal performance is slightly reduced compared to the baseline. There are further changes for the cultivated areas and yields. However, the latter have no additional impact on the level of NH<sub>3</sub> emissions.\\ \\ __Assumptions to model the mitigation potential in 2030:__ A new input data set concerning mineral fertilizers, animal performance, cultivated areas and yields was taken from the GHG projections. Otherwise it was calculated as in the measure above.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 0.30 (through animal performance), 2.29 (through less mineral fertilizers)\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 60.28
   
    * Reduction of the N balance to 70 kg / ha (Measure 3.4.5.1 of the Climate Protection Programme 2030)\\ To achieve the climate protection goal (also a goal of the German Sustainability Strategy) of the overall balance of 70 kg N / ha (three-year average) in 2030, the N input must be further reduced beyond the previous measures (see 2021 Projection Report).\\ \\ __Assumptions to model the mitigation potential in 2030:__ The N supply via mineral fertilizers was reduced by 8 kg / ha.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 3.94\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 64.22    * Reduction of the N balance to 70 kg / ha (Measure 3.4.5.1 of the Climate Protection Programme 2030)\\ To achieve the climate protection goal (also a goal of the German Sustainability Strategy) of the overall balance of 70 kg N / ha (three-year average) in 2030, the N input must be further reduced beyond the previous measures (see 2021 Projection Report).\\ \\ __Assumptions to model the mitigation potential in 2030:__ The N supply via mineral fertilizers was reduced by 8 kg / ha.\\ \\ Calculated additional emission reduction in kt NH<sub>3</sub>: 3.94\\ Calculated cumulative emission reduction in kt NH<sub>3</sub>: 64.22