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general:recalculations:start [2025/04/02 15:36] – [Overview of reasons for recalculations against Submission 2024] niebuhrgeneral:recalculations:start [2025/04/24 14:09] (current) – kotzulla
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-====== Chapter 8.1 - Recalculations ======+====== CHAPTER 9.1 - Recalculations ======
  
 {{ :general:recalculations:rueckrechnungen4.png?nolink&200|}} {{ :general:recalculations:rueckrechnungen4.png?nolink&200|}}
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   * **new** (sub-)**categories** to be included in the inventory or re-allocation of existing sub-categories within the inventory   * **new** (sub-)**categories** to be included in the inventory or re-allocation of existing sub-categories within the inventory
   * **data** (activity data & emission factors) for certain (sub-)categories **available for the first time**   * **data** (activity data & emission factors) for certain (sub-)categories **available for the first time**
-  * **change of data sources** (for activity data)+  * **change of data sources** (for activity data and emissions)
   * use of **new emission factors** (due to: inquest, research projects, expert judgement etc.)    * use of **new emission factors** (due to: inquest, research projects, expert judgement etc.) 
   *  **improvement of methods** used for calculating emissions   *  **improvement of methods** used for calculating emissions
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 __**Recalculations in data of current year of the latest submission**__ __**Recalculations in data of current year of the latest submission**__
  
-  * mostly because of **corrected activity data** (especially in Energy Production) from actualized Energy Balances +  * mostly because of **corrected activity data** (especially in Energy Production) from finalized Energy Balances 
   * also due to changed methods, emission factors, or data sources used   * also due to changed methods, emission factors, or data sources used
   * impact on the amount of emission reduction reported in latest submission   * impact on the amount of emission reduction reported in latest submission
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 ===== Overview of reasons for recalculations against Submission 2024 ===== ===== Overview of reasons for recalculations against Submission 2024 =====
 +(main changes only, without claim to completeness)
  
 **1. revision of (primary) activity data** **1. revision of (primary) activity data**
   * 1.A together with 2.C.1: __finalisation of National Energy Balance__ 2022 [(AGEB2024)]   * 1.A together with 2.C.1: __finalisation of National Energy Balance__ 2022 [(AGEB2024)]
   * 2.A.2 and 2.A.3: small updates of statistical data for most recent years   * 2.A.2 and 2.A.3: small updates of statistical data for most recent years
 +  * 3.B.4.e: Horse numbers were corrected in all years and all districts by a factor of 2.75 to include horses which are kept outside of agricultural holdings and not counted by agricultural census
  
  
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 **3. newly implemented acitivity and/or emission factors** **3. newly implemented acitivity and/or emission factors**
-  * +  * 3.D.a.1: application of NH<sub>3</sub> emission factors for mineral fertilizers in EMEP (2023) 
 +  * 3.D.a.4: calculation of NH<sub>3</sub> from crop residues according to tier2 method from EMEP (2023).  Cover crops are another newly reported source of PM emissions from soils.  
 +  
  
 **4. revision of emission factors** **4. revision of emission factors**
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   * 1.A.3.c - abrasive particulate matter: consideration of new (and far lower) emission factors for PM<sub>10</sub> from the abrasion of wheel on rail from a corresponding measurement campaign as part of a research project [(DZSF2025)]   * 1.A.3.c - abrasive particulate matter: consideration of new (and far lower) emission factors for PM<sub>10</sub> from the abrasion of wheel on rail from a corresponding measurement campaign as part of a research project [(DZSF2025)]
   * 3.B: improved emission factors for cattle and pig housing were introduced based on national research projects   * 3.B: improved emission factors for cattle and pig housing were introduced based on national research projects
-  * 3.B: N2O emission factors were adopted from the IPCC Refinement (2019). The N2O EF for solid manure storage doubles, which then also applies to the corresponding NOx and N2 EFs. +  * 3.B: N<sub>2</sub>O emission factors were adopted from the IPCC Refinement (2019): N<sub>2</sub>O EF for solid manure storage doubles, also affecting the corresponding NO<sub>x</sub> and N<sub>2</sub> EFs. 
-  * 3.D: NH3 emission factors for mineral fertilizers in EMEP (2023) were used for the first time in the present submission.+
  
 **5. re-allocation of activity data and/or emissions** **5. re-allocation of activity data and/or emissions**