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general:recalculations:start [2022/02/22 08:43] – [Reasons overview] kludtgeneral:recalculations:start [2022/07/07 07:48] (current) kotzulla
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 __**Possible reasons for recalculations are**__ __**Possible reasons for recalculations are**__
  
-  * **new** (sub-)**categories** to be included in the inventory or dislocation of subcategories 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)
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   * etc.   * etc.
  
-**All these changes can effect //specific years// of the inventory as well the //entire time series//, leading to more or less significant changes within the emission trends.**+**All these changes can effect //specific years// of the inventory as well as the //entire time series//, leading to more or less significant changes within the emission trends.**
  
 ===== Declaration of Recalculations ===== ===== Declaration of Recalculations =====
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   * NFRs 1.A.3.a i and 1.A.3.a ii (aviation gasoline)   * NFRs 1.A.3.a i and 1.A.3.a ii (aviation gasoline)
   * NFRs 1.A.3.c (solid-fuels), 1.A.3.d   * NFRs 1.A.3.c (solid-fuels), 1.A.3.d
- 
-  * several NFR categories: revision of __population data__: The population in Germany has been subject to several evaluations in recent years.  In the meantime, the methodology for the so-called "Census 2011" has been confirmed by the Federal Constitutional Court in the final instance with a representative survey and extrapolation by the Federal Statistical Office.  On this basis, the Federal Statistical Office examined correction options for previous years and published a so-called "recalculated and extrapolated population on the basis of the 2011 census" This recalculation up to and including 1991 eliminates the gap between the 2010 population updates and the 2011 census results. The inventory team of the Single National Entity has decided to use this corrected population time series for all relevant calculations.  As a result, various time series have been recalculated from 1991 up to and including 2016.  
- 
   * NFR 3.B, 3.D, 3.D.f & 3.I: updated information and statistical data of the 2020 official agricultural census (e.g. animal numbers, weight data, milk yield: see main agricultural page under „Recalculations and reasons“, [[sector:agriculture:start|Chapter 5 - NFR 3 - Agriculture (OVERVIEW)]].   * NFR 3.B, 3.D, 3.D.f & 3.I: updated information and statistical data of the 2020 official agricultural census (e.g. animal numbers, weight data, milk yield: see main agricultural page under „Recalculations and reasons“, [[sector:agriculture:start|Chapter 5 - NFR 3 - Agriculture (OVERVIEW)]].
 +  * NFRs 5.A, 5.B.1, 5.B.2 
  
 **2. update or revision of entire model** **2. update or revision of entire model**
   * NFR 1.A.3.a: revision of TREMOD AV    * NFR 1.A.3.a: revision of TREMOD AV 
   * NFR 1.A.3.b: revision of TREMOD    * NFR 1.A.3.b: revision of TREMOD 
-  * NFRs 1.A.3.d, 1.A.4.c iii and 1.A.5.b iii: revision and correction E.M.M.A. model regarding ship-movement data for maritime navigations+  * NFRs 1.A.3.d, 1.A.4.c iii and 1.A.5.b iii: revision and correction E.M.M.A. model regarding ship-movement data for maritime navigation activities
   * NFR 2.A.5.a: revision of several model parameters   * NFR 2.A.5.a: revision of several model parameters
  
 **3. newly implemented emission factors** **3. newly implemented emission factors**
 +  * NFR 2.A.2 + 2.A.3: first use of EF for Carbonmonoxid instead of fuel related estimation
   * For urea fertilizer the German fertilizer ordinance prescribes the use of urease inhibitors or the direct incorporation into the soil from 2020 onwards. The NH3 emission factor for urea fertilizers is therefore reduced by 70% from 2020 onwards, see description [[sector:agriculture:start|Chapter 5 - NFR 3 - Agriculture (OVERVIEW)]].   * For urea fertilizer the German fertilizer ordinance prescribes the use of urease inhibitors or the direct incorporation into the soil from 2020 onwards. The NH3 emission factor for urea fertilizers is therefore reduced by 70% from 2020 onwards, see description [[sector:agriculture:start|Chapter 5 - NFR 3 - Agriculture (OVERVIEW)]].
  
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 **5. re-allocation of activity data and emissions** **5. re-allocation of activity data and emissions**
-  * ???+  * from NFR 1.B.2.a to NFR 2.B.10: emissions from storage of chemical products 
  
 **6. as an outcome of the ongoing review activities under both UNFCCC and UNECE** **6. as an outcome of the ongoing review activities under both UNFCCC and UNECE**
 +  * NFR 1.A.2.f: reporting of CO emissions under NFR 2.A (new estimation)
   * NFR 2.C.1: reporting of HCB emissions using standard emission factor for the entire time period   * NFR 2.C.1: reporting of HCB emissions using standard emission factor for the entire time period