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general:recalculations:start [2025/04/01 11:01] – [Reasons overview] kotzullageneral:recalculations:start [2025/04/04 14:03] (current) – [Possible reasons for Recalculations] zheng
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 Generally, improvement of the emission inventory is an ongoing task and triggers recalculations for all source categories and pollutants frequently. Generally, improvement of the emission inventory is an ongoing task and triggers recalculations for all source categories and pollutants frequently.
  
-<WRAP left round info 60%> +<WRAP center round info 60%> 
-Further information regarding recalculations (especially due to changes in methods or activity data) can be found in the corresponding chapter of the **National Inventory Report**.+Further information regarding recalculations (especially due to changes in methods or activity data) can be found in the corresponding chapters of the **National Inventory Document 2025** (NID 2025) [(UBA2025)].
 </WRAP> </WRAP>
  
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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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 | [[General:Recalculations:ammonia| Ammonia  ]] - NH<sub>3</sub>                                     |  [kt]  |  734.36                 |  834.48       |  100    |  13.6%   |   |  512.22       |  576.62       |  64.40   |  12.6%   | | [[General:Recalculations:ammonia| Ammonia  ]] - NH<sub>3</sub>                                     |  [kt]  |  734.36                 |  834.48       |  100    |  13.6%   |   |  512.22       |  576.62       |  64.40   |  12.6%   |
 ^ Particulate Matter                                                                                                                                                                                                         ||||||||||| ^ Particulate Matter                                                                                                                                                                                                         |||||||||||
-| [[General:Recalculations:pm2.5| Particles <2.5µm ]] - PM<sub>2.5</sub>                             |  [kt]  |                         |               |         |          |   |  84.29        |  82.31        |  -1.98   |  -2.35%  | +| [[General:Recalculations:pm2.5| Particles <2.5µm ]] - PM<sub>2.5</sub>                             |  [kt]  |  199.77                 |  197.47       |  -2.30  |  -1.15%  |   |  84.29        |  82.31        |  -1.98   |  -2.35%  | 
-| [[General:Recalculations:pm10| Particles <10µm ]] - PM<sub>10</sub>                                |  [kt]  |                         |               |         |          |   |  184.56       |  181.99       |  -2.57   |  -1.39%  |+| [[General:Recalculations:pm10| Particles <10µm ]] - PM<sub>10</sub>                                |  [kt]  |  337.92                 |  334.41       |  -3.51  |  -1.04%  |   |  184.56       |  181.99       |  -2.57   |  -1.39%  |
 | [[General:Recalculations:TSP| Total Suspended Particles ]] - TSP                                   |  [kt]  |  2,019.60               |  2,015.59     |  -4.01  |  -0.20%  |   |  330.46       |  327.93       |  -2.53   |  -0.77%  | | [[General:Recalculations:TSP| Total Suspended Particles ]] - TSP                                   |  [kt]  |  2,019.60               |  2,015.59     |  -4.01  |  -0.20%  |   |  330.46       |  327.93       |  -2.53   |  -0.77%  |
-| [[General:Recalculations:BC| Black Carbon ]] - BC                                                  |  [kt]  |                         |               |         |          |   |  9.98         |  10.09        |  0.11    |  1.12%   |+| [[General:Recalculations:BC| Black Carbon ]] - BC                                                  |  [kt]  |  39.20                  |  39.20        |  0.00   |  0.00%   |   |  9.98         |  10.09        |  0.11    |  1.12%   |
 ^ //**Other**//                                                                                                                                                                                                              ||||||||||| ^ //**Other**//                                                                                                                                                                                                              |||||||||||
 | [[General:Recalculations:carbon_monoxide| Carbon Monoxide ]] - CO                                  |  [kt]  |  13,320.20              |  13,320.53    |  0.33   |  0.002%  |   |  2,539.17     |  2,568.11     |  28.94   |  1.14%   | | [[General:Recalculations:carbon_monoxide| Carbon Monoxide ]] - CO                                  |  [kt]  |  13,320.20              |  13,320.53    |  0.33   |  0.002%  |   |  2,539.17     |  2,568.11     |  28.94   |  1.14%   |
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 | [[General:Recalculations:HCB| Hexachlorobenzene ]] - HCB                                           |  [kg]  |  2,900.52               |  2,900.52     |  0.00   |  0.00%   |   |  4.63         |  4.68         |  0.04    |  0.94%   | | [[General:Recalculations:HCB| Hexachlorobenzene ]] - HCB                                           |  [kg]  |  2,900.52               |  2,900.52     |  0.00   |  0.00%   |   |  4.63         |  4.68         |  0.04    |  0.94%   |
 | [[General:Recalculations:PCB| Polychlorinated Biphenyls ]] - PCBs                                  |  [kg]  |  1,735.78               |  1,735.78     |  0.00   |  0.00%   |   |  213.40       |  209.46       |  -3.94   |  -1.85%  | | [[General:Recalculations:PCB| Polychlorinated Biphenyls ]] - PCBs                                  |  [kg]  |  1,735.78               |  1,735.78     |  0.00   |  0.00%   |   |  213.40       |  209.46       |  -3.94   |  -1.85%  |
-<sup>1</sup>: Base Year of reporting: 1990; excumptions: PM<sub>2.5</sub> and PM<sub>10</sub>: 1995 and BC: 2000 +| <sup>1</sup>: Base Year of reporting: 1990; excumptions: PM<sub>2.5</sub> and PM<sub>10</sub>: 1995 and BC: 2000                                                                                                                                             ||||||||||| 
 +
  
  
-===== Reasons overview =====+===== 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**
-  * 2.A.2 and 2.A.3: small updates of most recently years 
   * 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
 +  * 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: NH3 emission factors for mineral fertilizers in EMEP (2023) were used for the first time in the present submission.  
 +  * 3.D.a.4: NH3 emissions from crop residues are calculated for the first time according to the tier 2 method from EMEP (2023).  Cover crops are also a newly reported source of PM emissions from soils.  
 +  
  
 **4. revision of emission factors** **4. revision of emission factors**
   * mobile combustion over-all: revision of (implied) country-specific emission factors as part of model revision   * mobile combustion over-all: revision of (implied) country-specific emission factors as part of model revision
   * 1.A.3.b i, ii, iv, vi, vii, and 1.A.3.d.i (i): correction of rounding errors in emission factors for B[a]P, B[b]F, B[k]F, I[x]P, and PAH1-4   * 1.A.3.b i, ii, iv, vi, vii, and 1.A.3.d.i (i): correction of rounding errors in emission factors for B[a]P, B[b]F, B[k]F, I[x]P, and PAH1-4
-  * 1.A.3.c - abrasive pm: 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+  * 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: 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. 
  
 **5. re-allocation of activity data and/or emissions** **5. re-allocation of activity data and/or emissions**
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 [(DEICHNIK2024> Deichnik (2024): Aktualisierung und Revision des Modells zur Berechnung der spezifischen Verbräuche und Emissionen des von Deutschland ausgehenden Seeverkehrs.  [(DEICHNIK2024> Deichnik (2024): Aktualisierung und Revision des Modells zur Berechnung der spezifischen Verbräuche und Emissionen des von Deutschland ausgehenden Seeverkehrs. 
 from Bundesamts für Seeschifffahrt und Hydrographie (BSH - Federal Maritime and Hydrographic Agency); Hamburg, 2024.)] from Bundesamts für Seeschifffahrt und Hydrographie (BSH - Federal Maritime and Hydrographic Agency); Hamburg, 2024.)]
 +[(DZSF2025> DZSF (Deutsches Zentrum für Schienenverkehrsforschung / German Centre for Rail Traffic Research) research project on "Size-specific and spatial distribution of traffic-related abrasion and particulate emissions" (Größenspezifische und räumliche Verteilung von verkehrsbedingten Abrieben und partikulären Emissionen) https://www.dzsf.bund.de/SharedDocs/Standardartikel/DZSF/Projekte/Projekt_44_Abriebe_Emissionen.html )]
 +[(UBA2025> UBA, 2025: National Inventory Document for the German Greenhouse Gas Inventory 1990-2023 (NID 2025), https://www.umweltbundesamt.de/themen/klima-energie/treibhausgas-emissionen?listpart=1#articlelist, Dessau, April 2025)]