Podcast
Questions and Answers
Which area has the highest annual mean temperature?
Which area has the highest annual mean temperature?
The annual mean temperature in Ta Kwu Ling is higher than in Stanley.
The annual mean temperature in Ta Kwu Ling is higher than in Stanley.
True
What has caused the increase in temperature in urban areas of Hong Kong since 1885?
What has caused the increase in temperature in urban areas of Hong Kong since 1885?
rapid urban development
The __________ area is associated with higher temperatures.
The __________ area is associated with higher temperatures.
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What effect refers to the higher temperature in urban areas than in the surrounding rural areas?
What effect refers to the higher temperature in urban areas than in the surrounding rural areas?
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Match the areas with their annual mean temperatures:
Match the areas with their annual mean temperatures:
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Since 1885, the annual mean temperature increase in Hong Kong has been lower than the world average.
Since 1885, the annual mean temperature increase in Hong Kong has been lower than the world average.
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As the population of Hong Kong increases, more rural areas are converted into __________ areas.
As the population of Hong Kong increases, more rural areas are converted into __________ areas.
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What defines a hot night in Hong Kong?
What defines a hot night in Hong Kong?
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The number of very hot days has decreased from the period 1885-1914 to 1991-2020.
The number of very hot days has decreased from the period 1885-1914 to 1991-2020.
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By how much is the annual mean temperature of Hong Kong predicted to rise by 2100?
By how much is the annual mean temperature of Hong Kong predicted to rise by 2100?
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In Hong Kong, a very hot day is defined as a day with a maximum temperature of _____ or above.
In Hong Kong, a very hot day is defined as a day with a maximum temperature of _____ or above.
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What phenomenon is responsible for urban areas having a higher temperature than surrounding rural areas?
What phenomenon is responsible for urban areas having a higher temperature than surrounding rural areas?
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Match the following temperature-related categories with their definitions:
Match the following temperature-related categories with their definitions:
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Visibility in Hong Kong has consistently decreased from 1970 to the present day.
Visibility in Hong Kong has consistently decreased from 1970 to the present day.
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What has happened to the annual number of cold days in Hong Kong from 1885-1914 to 1991-2020?
What has happened to the annual number of cold days in Hong Kong from 1885-1914 to 1991-2020?
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What is the main effect of higher temperatures in urban areas on precipitation?
What is the main effect of higher temperatures in urban areas on precipitation?
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Urban areas experience more frequent heavy rain and thunderstorms due to ______ temperatures.
Urban areas experience more frequent heavy rain and thunderstorms due to ______ temperatures.
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What percentage change was observed in the number of hot nights from 1885-1914 to 1991-2020?
What percentage change was observed in the number of hot nights from 1885-1914 to 1991-2020?
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The number of days with rainfall in Hong Kong has remained consistent over the observed period.
The number of days with rainfall in Hong Kong has remained consistent over the observed period.
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Match the following weather conditions to their effect on visibility:
Match the following weather conditions to their effect on visibility:
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What primary factor contributes to an increase in annual mean temperature in urban areas like Hong Kong?
What primary factor contributes to an increase in annual mean temperature in urban areas like Hong Kong?
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Urban development can lead to a decrease in the number of heavy rainfall days.
Urban development can lead to a decrease in the number of heavy rainfall days.
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What is one consequence of cutting down trees in urban areas?
What is one consequence of cutting down trees in urban areas?
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Tall and dense buildings in urban areas block ______ flow.
Tall and dense buildings in urban areas block ______ flow.
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Match the urban development activities with their descriptions:
Match the urban development activities with their descriptions:
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Which of the following effects is likely NOT a consequence of urban development?
Which of the following effects is likely NOT a consequence of urban development?
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Increased urban activities contribute to lower temperatures in cities.
Increased urban activities contribute to lower temperatures in cities.
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What is the heat island effect?
What is the heat island effect?
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What has contributed to the improvement of visibility in Hong Kong?
What has contributed to the improvement of visibility in Hong Kong?
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Highly polluting factories in Hong Kong are now more prevalent than in the past.
Highly polluting factories in Hong Kong are now more prevalent than in the past.
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What geographic region is referenced for the movement of factories due to pollution control measures?
What geographic region is referenced for the movement of factories due to pollution control measures?
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The north and north-west monsoons carried air pollutants to _____, leading to low visibility in the past.
The north and north-west monsoons carried air pollutants to _____, leading to low visibility in the past.
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Match the cities with their respective characteristics regarding pollution control:
Match the cities with their respective characteristics regarding pollution control:
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Which year marked the beginning of significant visibility improvements according to the data presented?
Which year marked the beginning of significant visibility improvements according to the data presented?
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Air pollutants have increased steadily in Hong Kong over the years.
Air pollutants have increased steadily in Hong Kong over the years.
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What has the total number of hours with reduced visibility in Hong Kong done since 1970?
What has the total number of hours with reduced visibility in Hong Kong done since 1970?
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By how much is the mean sea level in Hong Kong expected to rise by 2100?
By how much is the mean sea level in Hong Kong expected to rise by 2100?
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Higher sea levels and stronger typhoons can increase the risk of flooding in coastal areas.
Higher sea levels and stronger typhoons can increase the risk of flooding in coastal areas.
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What health issue may increase due to higher temperatures in Hong Kong?
What health issue may increase due to higher temperatures in Hong Kong?
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A reduction in food production in other parts of the world may lead to higher prices of imported _____ in Hong Kong.
A reduction in food production in other parts of the world may lead to higher prices of imported _____ in Hong Kong.
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Match the following effects of climate change with their examples:
Match the following effects of climate change with their examples:
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Which of the following is a natural hazard that may be increased due to climate change in Hong Kong?
Which of the following is a natural hazard that may be increased due to climate change in Hong Kong?
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Warmer seawater can lead to coral bleaching in Sai Kung.
Warmer seawater can lead to coral bleaching in Sai Kung.
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What might happen to the Mai Po Nature Reserve due to rising sea levels?
What might happen to the Mai Po Nature Reserve due to rising sea levels?
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Study Notes
Hong Kong's Changing Climate
- Hong Kong's annual mean temperature has increased by about 1.7°C since 1885, higher than the world average of 1°C. This is primarily due to rapid urban development.
- The rate of temperature increase has accelerated in recent decades.
- As Hong Kong becomes warmer, the number of hot nights and very hot days increases, while the number of cold days decreases.
- Annual rainfall has slightly increased, but the number of days with rainfall has decreased, meaning rainfall intensity has increased
- Days with heavy rainfall (over 30mm/hour) and extreme rainfall events (over 100mm/hour) have become more frequent.
- Cloud cover and the number of days with thunderstorms have increased.
- Wind speed in urban areas has decreased, while it has remained relatively stable in rural areas.
- Visibility in Hong Kong has improved in recent decades, likely due to stricter pollution control measures in neighboring regions.
Causes of Climate Change in Hong Kong
- Global climate change: Global warming and changing precipitation patterns are impacting Hong Kong's climate.
- Urban development: Increased urban areas, reduced vegetation, and increased building density lead to the heat island effect, raising temperatures compared to surrounding rural areas.
Impacts of Climate Change in Hong Kong
- Natural Hazards: Stronger typhoons and extreme rainfall increase the risk of landslides and flooding. Sea levels are predicted to rise by about 1 metre by 2100.
- Society and Health: Higher food prices, more heat strokes and spread of diseases like dengue fever.
- Environment: Flooding of coastal areas like the Mai Po Nature Reserve, threatening wildlife habitats, and coral bleaching.
- Reduced visibility: Increased total hours of reduced visibility from 1970 to the early 2000's, but improved in recent decades.
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Description
Explore the significant shifts in Hong Kong's climate, highlighting rising temperatures, changing rainfall patterns, and the frequency of extreme weather events. Understand the local impacts of urban development and pollution control on weather phenomena over the years.
