Take the Jump

The City of Melbourne is part of a grouping of 100 cities from around the world (C40 Cities Climate Leadership Group) have committed to reducing GHG emissions consistent with a 1.5degC World (67% confidence) [1].
Emission targets have been informed by a report titled The Future of Urban Consumption in a 1.5°C World [2]

C40 Cities and Climate Change Pledges

C40 Cities (which include Melbourne and Sydney) have set the following targets
- 50% reduction in emissions by 2030 (based on 2010 emission levels)
- net-zero emissions by 2050

These targets are based on good science [3].
- A 50-55% reduction on CO2 emissions by 2030 based on 2010 levels
- Staying within a 570 GtCO2 cumulative carbon budget. Budget of 570 GtCO2 emissions from 2018 onward offers a 66% chance of limiting global warming to 1.5°C, when assessing historical temperature increases from a blend of air and sea-surface temperatures.

There limitations associated with these targets.
- During the period of steep mitigation of non-CO2 greenhouse gases are not addressed (such as CH4 and N2O)
- The achievement of net zero emissions to 2050 relies on reforestation and carbon-removal technologies such as bioenergy with carbon capture and storage (BECCS) and direct air carbon capture and storage (DACCS) - so-called Negative emissions. Some of these technologies are in their infancy and unproven at the scale required in the model.