Urban Heat Island Effect: Difference between revisions

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==Investigation==
Powerpoint
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Urban_Heat_Island_Effect_Eng_v5.ppt Urban Heat Island Effect] (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Urban_Heat_Island_Effect_Eng_v5.ppt Urban Heat Island Effect] (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Weather_and_Our_Environment_Eng_v2.ppt Weather and Our Environment] (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Weather_and_Our_Environment_Eng_v2.ppt Weather and Our Environment] (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Urban_Heat_Island_Effect_Worksheet_Eng_v4.doc Urban Heat Island Effect Worksheet] (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/F1_climatic_change_project_handbook_09_10_teachers_edition.doc F.1 climatic change project handbook 09-10 teachers edition] (contributed by Mr Vincent Lee of Tak Sun Secondary School)
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/Investigation_on_Heat_Island_Effect.doc Investigation on Heat Island Effect] (Chinese only) (Contributed by Mr. Lam Yiu Kei of POH Chan Kai Memorial College)


Worksheet
*[[Media:Micro_Urban_Heat_Island_Effect_Worksheet_Eng_v6(CC).doc|Micro Urban Heat Island Effect]] (Worksheet) [[File:Cclogo.jpg]](Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)[[Image:NEW.gif]]


*[[Media:Micro_Urban_Heat_Island_Effect_Worksheet_Chi_v6(CC).doc|城市微熱島效應]] (Worksheet) [[File:Cclogo.jpg]] (撰稿人:香港理工大學應用物理學系黃文翰)[[Image:NEW.gif]]


== 熱夜<br/> ==
*[https://weather.ap.polyu.edu.hk/secure/education/urban_heat_island_effect/F1_climatic_change_project_handbook_09_10_teachers_edition.doc F.1 climatic change project handbook 09-10 teachers edition] (contributed by Mr Vincent Lee of Tak Sun Secondary School)
*[[Media:Investigation_on_Heat_Island_Effect_Chi(CC)v3.doc‎|熱島效應研究]] (Worksheet)[[File:Cclogo.jpg]] (撰稿人:博愛醫院陳楷紀念中學林耀基)[[Image:NEW.gif]]
*[[Media:Investigation_on_Heat_Island_Effect_Eng_CC_v3.doc‎|Investigation on Micro Urban Heat Island Effect]] (Worksheet)[[File:Cclogo.jpg]] (Contributed by Mr. Lam Yiu Kei of POH Chan Kai Memorial College)[[Image:NEW.gif]]


==熱夜==
(From [http://www.hko.gov.hk/blog/b5/index.htm HKO Director's Blog] --- 星期五, 2010年 11月 26日)
(From [http://www.hko.gov.hk/blog/b5/index.htm HKO Director's Blog] --- 星期五, 2010年 11月 26日)


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在愈趨炎熱的天氣下,如果我們不改變生活的模式,社會便會消耗更多的化石能源。更多二氧化碳會排放到大氣,從而令地球進一步增溫,惡性循環愈演愈烈。
在愈趨炎熱的天氣下,如果我們不改變生活的模式,社會便會消耗更多的化石能源。更多二氧化碳會排放到大氣,從而令地球進一步增溫,惡性循環愈演愈烈。


== Questions<br/> ==
==Questions==
 
Explore what materials inside the city absorb heat most. catergorise them and tell the principle behind.  
Explore what materials inside the city absorb heat most. catergorise them and tell the principle behind.  


== References<br/> ==
==References==
 
#Mapping Manchester's urban heat island&nbsp;&nbsp; Sylvia Knight1,*, Claire Smith2, Michael Roberts3&nbsp; Weather&nbsp; Volume 65, Issue 7, pages 188–193, July 2010[http://onlinelibrary.wiley.com/doi/10.1002/wea.542/abstract http://onlinelibrary.wiley.com/doi/10.1002/wea.542/abstract]
#Mapping Manchester's urban heat island&nbsp;&nbsp; Sylvia Knight1,*, Claire Smith2, Michael Roberts3&nbsp; Weather&nbsp; Volume 65, Issue 7, pages 188–193, July 2010[http://onlinelibrary.wiley.com/doi/10.1002/wea.542/abstract http://onlinelibrary.wiley.com/doi/10.1002/wea.542/abstract]
#Pupils in UK Join Climate Survey (From BBC News) [http://news.bbc.co.uk/2/hi/uk_news/england/7929584.stm http://news.bbc.co.uk/2/hi/uk_news/england/7929584.stm]
#Pupils in UK Join Climate Survey (From BBC News) [http://news.bbc.co.uk/2/hi/uk_news/england/7929584.stm http://news.bbc.co.uk/2/hi/uk_news/england/7929584.stm]

Latest revision as of 07:44, 7 February 2014

Investigation

Powerpoint

  • Urban Heat Island Effect (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)
  • Weather and Our Environment (Contributed by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University)

Worksheet

熱夜

(From HKO Director's Blog --- 星期五, 2010年 11月 26日)

許多市民問香港天氣是否越來越熱。答案當然是‘正確’,但實際情況跟我們一般理解有所不同。

由於香港高度城市化,一些熱能特別是來自太陽的熱力會被大廈、馬路及其他建築物吸收,令市區的日間溫度通常較新界地區為低。相信大家都知道由於位於九龍市中心,天文台的日間溫度通常都是較新界地區(例如打鼓嶺)低一兩度(圖一)。

晚間時分,情況剛好逆轉。建築物及基建將日間儲存的熱能釋放,令晚間城市溫度高於郊區。

早前本港舉行了全城無冷氣日。我找同事幫忙,計算了戰後到現在六十年間天文台錄得「熱夜」的變化。熱夜是指當天低溫達到 28 度或以上的晚上。結果參考圖二。

圖二清楚指出,五十年代平均的熱夜數目基本上寥寥可數,但到本世紀第一個十年已升至每年超過 20 天。

談到熱夜,打鼓嶺的情況完全不同。該處至今仍可算是郊區。除 2004 年僅得一天外,過去十年沒有出現熱夜,風扇足可令人感到涼快。這角度看,是一個氣候宜人的地方。

那麼,未來十年城市的情況會變得怎樣? 我們將未來可能發生的排放情況(由現有生活模式完全不變至到全力減排)引致的溫度轉變匯集後,得出的平均數字是 : 到 2020 年,熱夜數目會超過兩倍,達到每年 55 天。而日間溫度達到 33 度以上的日子,也會由每年 13 天倍增至 27 天。

在愈趨炎熱的天氣下,如果我們不改變生活的模式,社會便會消耗更多的化石能源。更多二氧化碳會排放到大氣,從而令地球進一步增溫,惡性循環愈演愈烈。

Questions

Explore what materials inside the city absorb heat most. catergorise them and tell the principle behind.

References

  1. Mapping Manchester's urban heat island   Sylvia Knight1,*, Claire Smith2, Michael Roberts3  Weather  Volume 65, Issue 7, pages 188–193, July 2010http://onlinelibrary.wiley.com/doi/10.1002/wea.542/abstract
  2. Pupils in UK Join Climate Survey (From BBC News) http://news.bbc.co.uk/2/hi/uk_news/england/7929584.stm
  3. Adapting our cities for future climates: 17 February 2010 (Royal Met Soc UK) http://onlinelibrary.wiley.com/doi/10.1002/wea.602/full