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Chapter 33.53.5.4

3.5.4.5Southern Europe and the Mediterranean

The Mediterranean is regarded as a climate change hotspot, both in terms of projected stronger warming of the regional land-based hot extremes compared to the mean global temperature …

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Chapter 33.53.5.4

3.5.4.3Alpine regions

Alpine regions are generally regarded as climate change hotspots given that rich biodiversity has evolved in their cold and harsh climate, but with many species consequently being vulnerable …

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Chapter 33.5

3.5.4 Reducing Hotspots of Change for 1.5°C and 2°C of Global Warming

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Chapter 33.5

3.5.3 Regional Economic Benefit Analysis for the 1.5°C versus 2°C Global Goals

… a key factor. That is, although restraining the global temperature increase to 2°C is projected to reduce crop losses under climate change relative to higher levels of warming, the associated mitigation costs may increase the risk of hunger in low-income countries (low …

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Chapter 33.53.5.2

3.5.2.5RFC 5 – Large-scale singular events

… are components of the global Earth system that are thought to hold the risk of reaching critical tipping points under climate change , and that can result in or be associated with major shifts in the climate system. These components include: • the …

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Chapter 33.53.5.2

3.5.2.4RFC 4 – Global aggregate impacts

… species at the global level, in addition to economic metrics in global aggregate impacts. The degradation of ecosystem services by climate change and ocean acidification have generally been excluded from previous global aggregate economic analyses. Global economic impacts: WGII AR5 found that overall …

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Chapter 33.53.5.2

3.5.2.3RFC 3 – Distribution of impacts

… with the world’s poorest people disproportionately impacted at 2°C of warming (Byers et al., 2018). The hydrological impacts of climate change in Europe are projected to increase in spatial extent and intensity across increasing global warming levels of 1.5°C, 2°C and …

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Chapter 33.53.5.2

3.5.2.2RFC 2 – Extreme weather events

… of risk from extreme weather events at recent temperatures (1986–2005) owing to the attribution of heat and precipitation extremes to climate change , and a transition to high risk beginning below 1.6°C of global warming based on the magnitude, likelihood and timing …

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Chapter 33.53.5.2

3.5.2.1RFC 1 – Unique and threatened systems

WGII AR5 Chapter 19 found that some unique and threatened systems are at risk from climate change at current temperatures, with increasing numbers of systems at potential risk of severe consequences at global warming of 1.6°C above …

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Chapter 33.5

3.5.1Introduction

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