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                           Scenario 9: 2°C: Worst plausible outcome—emissions peak in 2040 and stabilize at 10Gt(C)/yr by 2056, GGR starts in 2030 and reaches 14.7Gt
                                                       Cumulative emissions (Gt(C))
                                        1000
                                    1200
                                                              Net emissions (Gt(C) year –1 )
                                            800
                                                       200
                                                   400
                                               600
                                                            2100
                                 Annual and cumulative emissions
                                                            2090
                                    projections 2014–2100
                                                            2080
                                                            2070
                                                                Cumulative emissions (Gt(C))
                                                            2060
                                                              GGR (Gt(C) year –1 )
                                                            2050
                                                            2040
                                                            2030
                                                            2020
                                                              Emissions (Gt(C) year –1 )
                                                            2010
                                                                Target cum emissions
                                       15
                                          10
                                    20
                                             5
                                                     –10
                                               0
                                                  –5
                                                       –15
                                  14.7 Gt(C) year –1  in 2089
                                       –1
                                 Peak GGR
                                            TFC
                                                            2100 Annual emissions/GGR (Gt(C) year )  0  –20  Managing Global Warming
                                                            2090  2080  TFC/year   (EJ)
                                Annual energy projections  2014–2100  2070  2060  2050  ZEE/year   (EJ)
                                                            2030  2040  FF/year   (EJ)
                                                            2020 0  2010
                      —cont’d  2089.  1800  1600  1400  1200  1000  800  600  400  Total final consumption (EJ)  200
                      2.2    by      +2°C                    ZEE index  12
                      Box    (C)/yr
   41   42   43   44   45   46   47   48   49   50   51