The table below provides information on the NDCs of big emitters used for this analysis, which were brought forward in 2016 as Parties ratified the Paris Agreement (see methods for more detail). It also gives details on the updated NDCs submitted as of January 2021. In the right-hand column, we estimate the effect of these NDC updates as a percentage reduction in emissions from the previous NDC level. Setting the country sliders to these values gives an indication of their impact on global temperature rise.
All calculations are based on estimates by the Climate Action Tracker (CAT).
Of the big emitters included in our tool, only the EU achieved a moderate increase in its NDC ambition, although it still did not reach the transformational change required to keep warming to 1.5°C. China increased its NDC ambition by only a minimal amount, with the new target being only marginally stronger (2%) than its current policies projection. Russia’s NDC ambition increased very slightly, but the new target is still estimated to be 6-13% higher than projected emissions under Russia’s current policies (Climate Target Update Tracker
). Meanwhile, Brazil’s NDC ambition fell substantially: the increase in Brazil’s emissions target is due to an increase in the baseline emissions in Brazil’s latest inventory (Climate Target Update Tracker).
||2016 NDC description used for this analysis
||Description of updated NDC (as of January 2021)
||How much stronger? Estimated percentage reduction in emissions from previous NDC level (excluding LULUCF)
||Indicative NDC of 43% below 2005 by 2030 (equivalent to emissions being 1.2 GtCO2e/yr in 2030)
||43% below 2005 by 2030
Peak CO2 latest by 2030; Non-fossil share in primary energy: around 20% in 2030; Carbon intensity: -60% to -65% below 2005 by 2030; Increase forest stock volume by 4.5 billion cubic metres in 2030
Peaking CO2 before 2030; Non-fossil share in primary energy: around 25% in 2030; Carbon intensity: over 65% below 2005 by 2030; Increase forest stock volume by around 6 billion cubic metres in 2030; Increase wind and solar power to 1,200 GW by 2030.
||40% below 1990 levels by 2030
||At least 55% below 1990 levels by 2030
||23% - 28%
||33-35% below 2005 emissions intensity of GDP by 2030
|| No update as of February 2021
|| 25-30% below 1990 by 2030
|| At least 30% below 1990 by 2030
|| Current policy projection
|| No update as of February 2021
| South Africa
|| Emissions including LULUCF between 398-614 MtCO2e/yr over 2025-2030.
|| No update as of February 2021
Other NDCs that have been updated
The CAT provides information on the NDC updates of a number of other countries, and while not all of these are available in this tool as individual countries, they do contribute to the ambition levels at the major regions.
Only two of the countries assessed by the CAT have put forward a new target that is significantly more ambitious: the UK and Ukraine. The UK’s emissions under its recently submitted NDC are set to be 42% below its previous target, which the CAT derived from the UK’s fifth carbon budget. Ukraine has not yet submitted its updated NDC, but the announced target is estimated to be a 39-41% improvement on the older NDC.
Chile, Argentina and Norway all increased ambition by a moderate amount, with target emissions 27%, 26% and 24% below their previous targets.
Some countries have submitted updated NDCs, but as their 2016 NDCs were difficult to quantify we cannot evaluate the change in the emissions level. Ethiopia, Kenya, Nepal and United Arab Emirates all fall into this category.
Worryingly, a number of countries have submitted NDCs with no or a very marginal increase in ambition. Aside from Brazil and Russia, this group includes Australia, Japan, Mexico, New Zealand, Singapore, South Korea, Switzerland and Viet Nam.
Background and methods
In signing up to the Paris Agreement, Governments agreed to pursue efforts to limit warming to 1.5°C, and set out their near-term emissions reduction pledges in so-called Nationally Determined Contributions (NDCs). The first set of NDCs put the world on track for around 3°C of warming by 2100, with warming continuing to rise into the next century. This level of warming would be devastating.
To limit warming to 1.5°C, the emissions pathways assessed by the Intergovernmental Panel on Climate Change (IPCC) in its Special Report on Global Warming of 1.5°C show that global emissions in 2030 need to be about 45% lower than they were in 2010.
As governments bring forward updated NDCs, a key question is: how much stronger to they need to be to keep the 1.5°C limit within reach? In 2019 we showed that holding warming to 1.5°C would require emissions in 2030 to be about half of the level implied by current pledges. A truly transformational ramping up of climate action for the period to 2030 and beyond is required.
What does this mean at the country level? This tool allows users to explore the effect that strengthening different governments’ climate pledges for 2030 could have on global warming levels and climate change impacts.
To give a global coverage, we have selected the largest one or two emitters from each of five major global regions. Action by these governments alone will not be sufficient to limit warming to 1.5°C, so users can also change the aggregated strength of the NDCs of other countries within each major region.
Current pledges scenario
Our reference scenario, “current pledges”, reflects our best guess of what global emissions levels and warming consequences are implied by the current Nationally Determined Contributions and current trends, taking into account the fact that some countries are on track to overachieve their current NDC targets. These estimates are based on assessments made by the Climate Action Tracker (CAT) of the NDCs submitted in 2016 (see the NDC Updates tab for more details). Where there is uncertainty in the emissions level associated with a country’s NDC, we take the upper end of this range to provide a conservative estimate.
Our baseline is the ambition level set by countries five years ago on ratification of the Paris Agreement. Some countries have brought forward updated NDCs, although few demonstrate a significant increase in ambition, and the UNFCCC Secretariat recently highlighted the enormous shortfall in ambition that remains. The NDC Updates tab contains information on the updated NDCs that have already been submitted, and provides an estimate of the change in the strength of each, based on the CAT’s Climate Target Update Tracker assessments.
It is worth noting that the starting point of different countries in terms of their 2016 NDCs varies substantially. Some countries are already set to overachieve their pledges through the implementation of existing policies (e.g. India, South Africa, Russia). This anticipated overachievement is indicated on the country sliders with red numbering. NDCs also differ in the extent to which they constitute a “fair share” to mitigation climate change – see the CAT’s assessments for more information.
The 2030 emissions gap
The emissions gap in 2030 is the gap between the global emissions level for a median 1.5°C (low or no overshoot) pathway from the IPCC’s SR1.5 (26 GtCO2e/yr) and the emissions level for the user selected scenario.
Emissions pathways after 2030
After 2030, the emissions projection for the user’s chosen scenario assumes a continued level of mitigation effort that is consistent with the ambition of the NDC. Baseline estimates of emissions from international aviation, marine activities and land-use, land-use change and forestry (LULUCF) are also included, following the Climate Action Tracker’s methodology (for more information, see our 2019 report, here).
When a country or region’s slider is moved to x%, the emissions of that country / region in 2030 decline are reduced to x% below the reference scenario value. We assume that a consistent level of climate action continues beyond 2030.
Our analysis is based on model scenarios produced by Integrated Assessment Models, which are taken from the IPCC’s Fifth Assessment Report (AR5) database. Scenarios that limit warming to 1.5°C by the end of the century show rapid emissions reductions to reach net zero around or shortly after mid-century, and go net negative after that. A mitigation target in 2030 alone is therefore not sufficient to ensure that emissions follow a trajectory that is compatible with the Paris Agreement’s long-term temperature goal, and our analysis assumes that a given level of climate action by 2030 will be followed by equivalent mitigation efforts over the rest of the century. To do so, a scenario is constructed from the available AR5 scenarios to best represent the user’s selected NDC targets on the regional level. This scenario is used as an approximation of the same ambition level performed throughout the century.
For 1.5°C compatible pathways, this means that some level of carbon dioxide removal is deployed. For information on the challenges associated with governing large-scale carbon dioxide removal, see our publication on the topic.
The pathways constructed by the tool are limited by the set of modelled pathways available in the IPCC’s AR5 database. This means that at very high levels of ambition, some regions may hit an artificial ceiling in the level of ambition that the tool can process. For example, if sliders for both the EU and the USA are moved to 80% (i.e. their emissions are 80% below the NDC baseline level), a change in the strength of other OECD countries’ NDCs does not make a difference to the warming level in the tool because the most ambitious OECD pathway available has already been selected. This does not mean that a chosen combination is infeasible, but instead reflects a limitation in the pathway dataset used for this tool.
Estimating warming levels for each scenario
We calculate the levels of global warming associated with different levels of climate action for each scenario using the linear relationship between the cumulative emissions released over the century and the warming level reached in 2100. The upper end of the warming ranges shown is the “likely” level of warming that would be reached under a given scenario – in other words, there is a 66% chance that warming will be kept at or below this level. The median and lower end of the range show warming levels that we have a 50% and 33% chance of staying at or below (or a 50% and 66% chance of exceeding).
Some scenarios (overshoot) reach their peak warming level before the end of the century, with temperatures declining gradually afterwards so that the warming level in 2100 is lower than the peak level. Peak temperature level estimates are especially important with regards to tipping points and are required for a assessing for example climate impacts. We therefore also estimate the peak warming level, which is derived using the (non-linear) relationship between cumulative emissions from 2011 over the century and the level of peak warming. The relationship is calibrated using MAGGIC6 runs for many variations.
In this analysis, GMT values are estimated based on the simplified climate model MAGICC6 (Meinshausen et al., 2011). The simplified version allows only to project global temperature levels that are sufficiently accurate for this analysis. For this tool to work in real-time and for a wide range of user-options, we interpolate certain temperature responses. Thus, determined GMT levels do not exactly match e.g. data provided by the Climate Action Tracker.
Connecting a level of climate action in 2030 with the level of warming achieved in the longer term requires a number of assumptions to be made regarding climate action beyond 2030. As described above, we use pathways assessed by the IPCC to project emissions out to 2100. An important caveat to our warming estimates is the role of negative emissions in many high ambition scenarios. The IPCC’s SR1.5 found that all scenarios that limit end-century warming to 1.5°C, and most that limit warming to 2°C, require some level of carbon dioxide removal, or negative emissions. In some cases, carbon dioxide removal is used to reduce warming levels after a peak.
For the level of warming that corresponds to a user’s selection, the Overview tab shows the corresponding severity of risks at the global level for five ‘reasons for concern’, as assessed by the IPCC in its Special Report on Global Warming of 1.5°C.
Climate change impacts vary from place to place. Sub-regional climate change impacts for the level of warming that corresponds to a user’s selection are shown in the Impacts tab. Users can choose from five different impacts:
- Hottest temperature of the year
- Heat wave severity index (a measure of heat wave duration)
- Heat wave frequency index
The data for these impacts is taken from the latest simulations produced by global climate models (GCMs) under the Coupled Model Inter-comparison Project (CMIP6). These serve as the primary source of information for the upcoming IPCC’s Assessment Report (AR6). For each impact, the change against the reference period 1990-2010 is shown. During this period, global temperatures had risen by 0.85°C above pre-industrial levels
In this tool we show an area average for each sub-region, but it is important to remember that climate impacts can vary substantially within countries and sub-regions.
Pathway extension method - further detail
Connecting near-term climate action with global temperature rise requires an emissions pathway consistent with climate pledges in 2030 to be extended to the end of the century. We use the constant quantile extension method (Gütschow et al. (2018)), which is based on the assumption that the relative ambition level of climate policy is kept constant over the century. The extension is done using a database of emission scenarios from integrated assessment models (IAMs) included in the IPCC’s Fifth Assessment Report (AR5) (Clarke et al., 2014). For each region, the emissions level in 2030 that we estimate as being consistent with the NDCs in that region defines the selection of IAM scenarios used to extend the pathway until the end of the 21st century. This ensures that that the long-term projection of a region is as consistent as possible with near-term pledges. See Geiges et al. (2020) for more detailed information.
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Geiges, A., Nauels, A., Parra, P. Y., Andrijevic, M., Hare, W., Pfleiderer, P., Schaeffer, M., and Schleussner, C.-F.: Incremental improvements of 2030 targets insufficient to achieve the Paris Agreement goals, Earth Syst. Dynam., 11, 697–708, https://doi.org/10.5194/esd-11-697-2020, 2020.
Gütschow, J., Jeffery, M. L., Schaeffer, M., and Hare, B.: Extending Near-Term Emissions Scenarios to Assess Warming Implications of Paris Agreement NDCs, Earth's Future, 6, 1242–1259, https://doi.org/10.1002/2017EF000781, 2018.
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