Continued high GHG emissions would lead to mostly negative impacts for biodiversity, ecosystem services and economic development and amplify risks for livelihoods and for food and human security...
Continued high GHG emissions would lead to mostly negative impacts for biodiversity, ecosystem services and economic development and amplify risks for livelihoods, and food and human security.
- Anthropogenic greenhouse gas emissions are continuously increasing, largely driven by economic and population growth. Historical emissions have driven atmospheric concentrations of CO2 to unprecedented levels over the last 800,000 years.
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- Earth Overshoot Day is advancing each year; in 2019, it falls on July 29. Humanity is now using nature 1.75 times as fast as the planet’s ecosystems can regenerate; CO2 emissions are responsible for an estimated 60% of humanity’s demand on nature.
- NOAA reported that on May 12, 2019 CO2 concentrations reached a record 415.27 parts per million (ppm), higher than at any point on record.
- 2018 was the sixth consecutive year of steep global increases in GHG concentrations. In April and May 2018, CO2 levels averaged more than 410 ppm at NOAA’s Mauna Loa Observatory, passing another climate milestone. (In 2015, CO2 concentrations breached the symbolic benchmark 400 part per million (ppm) in northern hemisphere). | Related Megatrends: Consumerism; Security
- After a relative slowdown trend since 2012 and three years of remaining flat, global energy-related CO2 emissions grew by 1.4% in 2017, and another 1.7% in 2018, reaching a historic high of 33.1 Gt CO2. | Related Megatrends: Natural resources; Consumerism; Security
- The UNEP assessment reveals a large gap between emission levels and those consistent with pathways to the 2°C and 1.5°C goals respectively, making it increasingly difficult to be on track to meet the 2030 emission goals. | Related Megatrends: Natural resources; Consumerism; Technology
- The current Intended Nationally Determined Contributions (INFCs) submitted by countries could lead to around 2.7 degree Celsius by 2100, not meeting the Paris Agreement goals.
- the Rulebook adopted to help impelemnt the Paris Agreement sets a set of rules that makes the Paris Agreement operative. It also establishes the Global Stocktake (GST) mechanism for a coherent measurement system to allow comparability among countries and assess progress. The GST is to take place every five years, as of 2023.
- Since cities consume close to 66% of the world’s energy and account for more than 70% of global GHG emissions, they play an important role in tackling emissions and addressing climate change.
- Buildings are the largest single source of CO2 emissions--representing almost 40% of energy‐related CO2 emissions in 2017. Since 2010, buildings-related CO2 emissions have continued to rise by around 1% per year.
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- By 2050, the EU should cut greenhouse gas emissions to 80% below 1990 levels. Milestones to achieve this are 40% emissions cuts by 2030 and 60% by 2040. In order to meet its Paris Agreement pledges, the EU should aim to reduce its GHG emissions by 65% by 2030.
- Around 20% of the EU's total greenhouse gas emissions is from road transport. New rules adopted in 2019 require that CO2 emissions for new cars and vans be cut by an average of 37.5% and 31% respectively compared to 2021 levels. For the period 2025-2029, emissions have to be 15% less for the entire fleet. New binding reduction targets might be adopted for 2035 and 2040 onwards.
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