Global GHG Emissions Increased 9.1 GtCO2-eq in the Last Decade, Despite Slowing Growth Rate

Why It Matters

Understanding emission trends is crucial for designers and engineers to develop products and systems that minimize their environmental footprint. This data highlights the urgency for sustainable design strategies and the need to consider the full lifecycle impact of design decisions.

Key Finding

Global greenhouse gas emissions have reached their highest levels on record, continuing to rise throughout the last decade, although the pace of this increase has slowed compared to the decade before.

Key Findings

• Global net anthropogenic GHG emissions were higher in the 2010-2019 decade than in any previous period.
• GHG emissions continued to grow from 2010-2019, reaching 59 ± 6.6 GtCO2-eq in 2019.
• The average annual growth rate of GHG emissions in the 2010-2019 decade (1.3%) was lower than in the 2000-2009 decade (2.1%).
• The average annual GHG emissions for the 2010-2019 decade were 56 ± 6.0 GtCO2-eq yr –1, an increase of approximately 9.1 GtCO2-eq yr –1 from the previous decade.

Research Evidence

Aim: To analyze the trends and drivers of global greenhouse gas emissions over the past two decades.

Method: Data analysis and trend assessment

Procedure: The study analyzed global net anthropogenic greenhouse gas emissions data from 2000 to 2019, comparing the average annual emissions and growth rates between the 2000-2009 and 2010-2019 decades.

Context: Global environmental policy and industrial impact

Design Principle

Design for minimal environmental impact by actively reducing greenhouse gas emissions throughout the product lifecycle.

How to Apply

When designing new products or systems, conduct a preliminary assessment of potential greenhouse gas emissions associated with material sourcing, manufacturing, use, and disposal.

Limitations

The study focuses on global aggregated data and does not detail specific sectoral or regional emission drivers, which could offer more granular insights for targeted design interventions.

Student Guide (IB Design Technology)

Simple Explanation: Even though we're adding greenhouse gases to the atmosphere more slowly than before, we're still adding more overall, reaching record high levels.

Why This Matters: This research shows that environmental challenges are growing, making it essential for designers to create solutions that are not only functional and aesthetically pleasing but also environmentally responsible.

Critical Thinking: Given that emissions are still rising, what are the most effective design strategies to reverse this trend, and what are the trade-offs involved?

IA-Ready Paragraph: The global trend of increasing greenhouse gas emissions, as highlighted by research indicating record high levels in the 2010-2019 decade (Dhakal et al., 2023), underscores the critical need for design projects to prioritize environmental sustainability. While the rate of emission growth has slowed, the overall increase necessitates the development of innovative solutions that actively reduce carbon footprints throughout their lifecycle.

Project Tips

• When researching environmental impacts, look for data on emission trends over time.
• Consider how your design choices might contribute to or mitigate these global emission trends.

How to Use in IA

• Use the data on rising emissions to justify the need for sustainable design solutions in your project.
• Reference the slowing growth rate to discuss the potential impact of existing mitigation efforts, while still emphasizing the need for further innovation.

Examiner Tips

• Demonstrate an understanding of the global environmental context and how it influences design decisions.
• Show how your design project addresses the challenge of rising emissions.

Independent Variable: Time (decades)

Dependent Variable: Global net anthropogenic greenhouse gas emissions (GtCO2-eq)

Strengths

• Provides a clear, high-confidence overview of global emission trends over two decades.
• Quantifies the magnitude of emissions and the change in growth rates.

Critical Questions

• What specific sectors or activities are driving the continued growth in emissions?
• How do policy interventions and technological advancements influence these emission trends?

Extended Essay Application

• Investigate the lifecycle emissions of a specific product category and propose design modifications to reduce its carbon footprint.
• Analyze the effectiveness of different sustainable design strategies in mitigating greenhouse gas emissions.

Source

Emissions Trends and Drivers · Cambridge University Press eBooks · 2023 · 10.1017/9781009157926.004