Podcast
Questions and Answers
Which year was recorded as the warmest year ever since human civilization began?
Which year was recorded as the warmest year ever since human civilization began?
What is the average rate of sea level rise in the 20th century?
What is the average rate of sea level rise in the 20th century?
By the end of the century, the sea level rise rate is expected to accelerate to which of the following rates?
By the end of the century, the sea level rise rate is expected to accelerate to which of the following rates?
Which of the following statements accurately describes the low elevation coastal zone (LECZ)?
Which of the following statements accurately describes the low elevation coastal zone (LECZ)?
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How does climate change primarily affect sea level rise?
How does climate change primarily affect sea level rise?
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How many coastal mega-cities were recorded in 1990?
How many coastal mega-cities were recorded in 1990?
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What has primarily contributed to climate change since the Industrial Revolution?
What has primarily contributed to climate change since the Industrial Revolution?
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What is the long-term average weather in an area typically defined as?
What is the long-term average weather in an area typically defined as?
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What is the atmospheric CO2 concentration recorded in May 2022?
What is the atmospheric CO2 concentration recorded in May 2022?
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Which of the following best describes climate variability?
Which of the following best describes climate variability?
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What is a significant effect of anthropogenic greenhouse gases since the Industrial Revolution?
What is a significant effect of anthropogenic greenhouse gases since the Industrial Revolution?
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What does the term climate change specifically refer to?
What does the term climate change specifically refer to?
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How many mega-cities existed in 1950?
How many mega-cities existed in 1950?
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Study Notes
Coastal Megacities
- World population is increasing and becoming more urban
- The number of coastal megacities (population >8 million) continues to grow:
- 2 in 1950
- 13 in 1990
- 20 in 2010
- Growth in the number of coastal cities has slowed, however, the population size of those cities continues to increase exponentially
Climate Change
- Weather refers to short-term conditions (days)
- Climate refers to average weather over 30 years
- Climate variability refers to variation from the average climate over months to years
- Climate change refers to a change in the average weather over many years
Greenhouse Gases
- The greenhouse effect is a natural phenomenon that keeps Earth warm
- Humans are increasing the effects of the green house effect
- Fossil fuels are the primary cause of the increased greenhouse gas levels in the atmosphere
Global Warming
- The six warmest years on record have occurred since 2010
- 2016 was the warmest year ever recorded, followed by 2020
- In 2021 the earth was 1.1 C warmer than the long-term average
Sea Level Rise
- Sea levels are rising due to climate change
- The main causes are:
- Thermal expansion of oceans
- Melting of land-based ice
- The rate of sea level rise has accelerated in recent years:
- 1.8 mm/yr in the 20th century
- 3.1 mm/yr since the early 1990s
- The expected sea level rise continues to increase:
- 4 mm/yr by the end of the century
- Low elevation coastal zones (LECZ) are at greatest risk as they:
- Represent only 2% of the global land mass
- Contain 10% of the world population and 13% of its urban population
- Contain 21% of the population in developing countries compared to 11% in developed countries
Global Warming & Sea Level Rise
- The continued increase in human-caused greenhouse gas emissions in the atmosphere has contributed to rising global temperatures
- Rising temperatures are having a direct impact on:
- The rate of sea level rise
- The frequency and intensity of extreme weather events
- The combination of rising sea levels and extreme weather events poses significant risks for:
- Coastal communities
- Infrastructure
- Economic activity
- The most vulnerable populations are those living in low elevation coastal zones.
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Description
Explore the impact of climate change on coastal megacities and the rising global temperature trends. This quiz delves into the dynamics of urban growth, greenhouse gases, and the implications of global warming on coastal populations. Test your knowledge on this critical issue affecting our future.
