GREENHOUSE GAS REDUCTION PATHWAYS IN THE UNFCCC

1,46
MB PROCESS UP TO 2025 − TECHNICAL REPORT

104
stron

5003
ID Directorate-General for the Environment, European Commission

2003
rok

Greenhouse gas Reduction Pathways: Executive summary.ii

Introduction1

1. Global emission constraints and baseline emission scenario assumptions.3

1.1. Baseline scenario for the 1995 - 2100 period.3

1.2. Emission profiles for the stabilisation of greenhouse gas concentration at 550 and 650 ppmv.6



1.3. Impacts on temperature.9

1.4. Implications for emission reductions.10

1.5. Conclusions11

2. A review and selection of the approaches to international commitment schemes13

2.1. The dimensions of international commitment schemes.13

2.2. The selected endowment rules for the first phase of the Greenhouse gas Reduction Pathways

study15

2.3. Characterisation of the six selected approaches16

2.4. Outcomes of the different approaches assessed in the first phase of the study.17

2.4.1. The commitment schemes and resulting endowments.18

2.4.2. Key conclusions19

3. The long-term endowment schemes: design, key parameters and resulting endowments21

3.1. Key assumptions for the Per Capita Convergence and Multi-Stage cases 21

3.1.1. Two Per Capita Convergence cases: convergence in 2050 and in 2100.21

3.1.2. Three simplified Multi-Stage schemes to emission commitments21

3.1.3. Hypotheses for the Multi-Stage cases in the S550e constraint23

3.1.4. Assumptions for the Multi-Stage cases under the S650e constraint24

3.2. Regional endowments under the S550e constraint25

3.2.1. S550e, reductions from Reference case to 2025 and 2050.25

3.2.2. Robustness of results for the S550e profile27

3.3. Regional endowments under the S650e constraint29

3.3.1. S650e, reductions from Reference case to 2025 and 2050.29 - i -

3.3.2. Robustness of results for the S650e profile30

3.4. Conclusions31

4. Abatement costs and impacts on the energy systems and on the economies35

4.1. Impacts on the energy sector from the POLES model35

4.1.1. World carbon price35

4.1.2. The S550e profile.36

4.1.3. The S650e profile.38

4.1.4. The pattern of international emission trading40

4.1.5. Synthesis on effort rates in S550e and S650e for 13 regions43

4.1.6. Impacts on the World Energy Balances44

4.2. Economic assessment of endowment schemes with the GEM-E3 model 47

4.2.1. Introduction.47

4.2.2. Methodology and design of model applications48

4.2.3. Results48

4.2.4. Model based quota endowment scheme55

4.2.5. Conclusions58

4.3. Long term abatement costs and emission trading with the FAIR model 59

4.3.1. World prices and global effort.59

4.3.2. Regional abatement and trading under the S550e and S650 profiles60

4.3.3. Financial flows62

4.3.4. Effort rates..64

4.3.5. Abatement action within the long-term energy system.66

4.3.6. Conclusions71

5. Co-benefits of mitigation actions.73

5.1. Co-benefits from the FAIR-TIMER-RAINS modeling.73

5.1.1. Co-benefits of climate policies for regional air pollution control73

5.1.2. Potential co-benefits of the S550e and S650e mitigation scenarios.75

5.1.3. Looking into more detail to changes in Asia.81

5.1.4. Conclusions83

5.2. Evaluation of co-benefits from GEM-E3 and ExternE.83

5.2.1. Methodology for evaluating co-benefits in GEM-E3 World.83

5.2.2. Co-benefits in the Multi-Stage 3 scenarios.85

References89