11.1 Recalculations

Last updated on 04 Dec 2014 08:38 (cf. Authors)

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The following pages provide an detailed overview of the recalculations carried out against the previous submission, focussing on changes in emission estimates reported for 1990 (1995 for emissions of PM2.5 an PM10) and the last year reported within the previous submission (here: 2011).

Generally, improvement of the emission inventory is an ongoing task and triggers recalculations for all source categories and pollutants frequently.

Further informations regarding recalculations (especially due to changes in methods or activity data) can be found in the corresponding chapter of the National Inventory Report.

Reasons for Recalculations

Due to the ever ongoing efforts to improve the inventory, more or less broad recalculations become necessary with each new submission.

Possible reasons for recalculations are:

  1. new (sub-)categories to be included in the inventory or dislocation of subcatagories within the inventory
  2. data (activity data & emission factors) for certain (sub-)categories available for the first time
  3. change of data sources (for activity data)
  4. use of new emission factors (due to: inquest, research projects, expert judgement etc.)
  5. improvement of methods used for calculating emissions
  6. outcome of ongoing review activities under both UNFCCC and UNECE

etc.

All these changes can effect both several years of the inventory or the whole time series back to 1990 (PM: 1995), leading to more or less significant changes within the emission trends.

Declaration of Recalculations

Under UN FCCC reporting, parties have to comment any recalculations in any year leading to differences between latest and current submission for a given year or the time period. Thereby, highest attention is given to recalculations within base year and the most current year of the latest submission:

Recalculations in base year data:

  • mostly rather small but of highest importance
  • mostly due to changed methods or emission factors used for entire time series
  • impact on basis of any evaluation

Recalculations in data of current year of the latest submission:

  • mostly because of corrected activity data (especially in Energy Production) from actualized Energy Balances
  • also due to changed methods, emission factors, or data sources used
  • impact on the amount of emission reduction reported in latest submission

Recalculations under UN ECE

Within this IIR, Germany will focus on recalculations within 1990 (PM: 1995) and the most current year of the latest submission, giving a) the quantity (in absolute numbers and in %) of change for any recalculated emission and b) the reasons for the recalculations done.

Recalculations in current submission

Reasons overview

1. revision of activity data

  • NFR 1.A: updated NEB 2011
  • NFR 1.A: revised natural gas statistics 2003-2010
  • NFR 1.A.3: revision of fuel allocation onto different modes of transport 2005-2009
  • NFR 1.A.3.b: mileage
  • NFR 1.A.2.f ii, 1.A.4.bii & c ii: revision of over-all fuel consumption due to consideration of biofuels

2. revision of entire model

  • TREMOD, regarding CNG and LPG use in 1.A.3.b

3. newly inplemented EF

  • EF for heavy-metal emissions from off-road mobile sources

4. revision of emission factors

  • EF for heavy-metal emissions from national navigation

5. re-allocation of activity data and emissions

6. as an outcome of the ongoing review activities under both UNFCCC and UNECE

Overview of impact of recalculations on the level of National Totals

(For more detailed information on category-specific recalculations for each pollutant please mouseclick the pollutant.)

1990 (19951) National Totals 2011 National Totals
Submission Change Submission Change
Pollutant Unit 2013 2014 absolute relative 2013 2014 absolute relative
Main pollutants
NEC
Nitrogen Oxides - NOx (as NO2) [kt] 2,874.98 2,874.96 -0.02 0.00% 1,292.90 1,293.64 0.73 0.06%
Non-Methane VOC - NMVOC [kt] 3,131.63 3,066.92 -64.71 -2.07% 1,008.06 981.27 -26.79 -2.66%
Sulfur Oxides - SOx (as SO2) [kt] 5,292.04 5,282.43 -9.61 -0.18% 444.66 423.90 -20.76 -4.67%
Ammonia - NH3 [kt] 706.32 697.18 -9.14 -1.29% 563.39 560.19 -3.20 -0.57%
Other
Carbon Monoxide - CO [kt] 12,405.43 12,431.69 26.25 0.21% 3,313.91 3,297.73 -16.18 -0.49%
Particulate Matter
Particles <2.5µm PM2.5 [kt] 179.08 179.23 0.15 0.08% 111.01 113.19 2.18 1.96%
Particles <10µm - PM10 [kt] 298.12 298.39 0.27 0.09% 208.57 219.42 10.85 5.20%
Total Suspended Particles - TSP [kt] 1,883.84 1,884.15 0.31 0.02% 299.91 320.68 20.78 6.93%
Heavy Metals
Priority HM
Lead - Pb [Mg] 2,074.59 2,056.83 -17.76 -0.86% 189.86 182.60 -7.26 -3.82%
Cadmium - Cd [Mg] 17.26 17.19 -0.07 -0.38% 5.29 5.49 0.20 3.86%
Mercury - Hg [Mg] 29.20 32.18 2.98 10.22% 9.49 10.15 0.66 6.91%
Other HM
Arsenic - As [Mg] 81.94 80.16 -1.77 -2.16% 5.98 5.06 -0.92 -15.45%
Chromium - Cr [Mg] 188.21 189.39 1.19 0.63% 55.83 57.21 1.38 2.47%
Copper - Cu [Mg] 1,693.56 1,701.94 8.38 0.50% 2,123.81 2,132.34 8.53 0.40%
Nickel - Ni [Mg] 272.51 267.99 -4.52 -1.66% 101.17 91.84 -9.33 -9.22%
Selenium - Se [Mg] 3.42 3.41 -0.01 -0.40% 3.61 3.57 -0.04 -1.01%
Zinc - Zn [Mg] 1,598.90 1,598.90 0.00 0.00% 1,885.35 1,981.30 95.96 5.09%
Persistent Organic Pollutants - POPs
Dioxines & Furanes - PCDD/F [g I-Teq] 747.27 747.39 0.12 0.02% 63.29 64.17 0.88 1.38%
Polycyclic Organic Hydrocarbons - PAHs
Benzo(a)pyrene - B[a]P [Mg] 138.24 138.33 0.09 0.06% 29.20 29.38 0.18 0.61%
Benzo[b]Fluoranthene - B[b]F [Mg] 2.0044 2.0044 0.00 0.00% 0.085 0.085 0.00 -0.09%
Benzo[k]Fluoranthene - B[k]F [Mg] NA / NE / NO / IE NA / NE / NO / IE
Indeno[1,2,3-c,d]Pyrene - I[123cd]P [Mg] 0.71 0.71 0.00 0.00% 0.03 0.03 0.00 -0.10%
Polycyclic Aromatic Hydrocarbons - ∑ PAH [Mg] 374.03 374.15 0.12 0.03% 177.24 177.56 0.32 0.18%
Other POPs
Hexachlorobenzene - HCB [kg] 5.30 5.32 0.03 0.48% 3.39 3.46 0.07 1.97%
Hexachlorcyclohexane - HCH [kg] 60,200.00 60,200.00 0.00 0.00% NA
Polychlorinated Biphenyls - PCBs [kg] 1,672.04 1,672.11 0.07 0.00% 224.65 233.65 9.00 4.00%
Unit 2013 2014 absolute relative 2013 2014 absolute relative
Submission Change Submission Change
1990 (19951) National Totals 2011 National Totals

1 for PM2.5 an PM10 emissions

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