Chapter 18: Problem 11

What are the major IPCC projections for climate changes in the 21 st century?

Short Answer

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The IPCC projects significant climate changes in the 21st century: a continued increase in global mean surface temperature, changes to precipitation affecting various resources, a faster rate of sea-level rise than the past 40 years, and an increase in extreme weather events such as heat waves and heavy precipitation. It is however important to note that these changes can hugely vary depending on the rate of greenhouse gas emissions.

Step by step solution

Understand the role of IPCC

The IPCC gathers and assesses scientific information relevant to climate change to provide decision-makers with regular assessments of the scientific basis of climate change, its impacts, and potential future risks. It also puts forward adaptation and mitigation options.

Gather information on IPCC's projections

IPCC’s Fifth Assessment Report (AR5), provides a range of key future climate projections. The main points to take note of include: an increase in global temperature, changes in precipitation, sea-level rise, and increased frequency and intensity of extreme weather events

Summarize the key points

The IPCC projects that the global mean surface temperature will continue to rise - over the 21st century, very likely is expected to exceed 1.5°C with projections ranging from 0.3°C to 4.8°C depending on the rate of greenhouse gas emissions. Sea levels will continue to rise this century at a faster rate than we have experienced over the past 40 years. Changes to precipitation patterns are expected, affecting water resources, food production and risk of flooding. The number of extremely hot days are expected to increase, leading to a higher risk of heat-related health issues and bushfires. The occurrence of heavy precipitation leading to flooding is also expected to increase in many regions.

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What are the major IPCC projections for climate changes in the 21 st century?

Short Answer

Step by step solution

Understand the role of IPCC

Gather information on IPCC's projections

Summarize the key points

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