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論文中文名稱:The Meteorological Impact to the Summer Time Air and Land Surface Temperature on a Subtropical City [以論文名稱查詢館藏系統]
論文英文名稱:The Meteorological Impact to the Summer Time Air and Land Surface Temperature on a Subtropical City [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:設計學院
系所名稱:設計學院創意與永續建築研究外國學生專班
畢業學年度:102
出版年度:103
中文姓名:林龍健
英文姓名:John Cua Aganda
研究生學號:100a68005
學位類別:碩士
語文別:英文
口試日期:2014-01-20
論文頁數:50
指導教授中文名:黃志弘
口試委員中文名:吳可久;孫振義
中文關鍵詞:Urban heat islandCloud coverAir temperatureMeteorological studyHeat characteristics
英文關鍵詞:Urban heat islandCloud coverAir temperatureMeteorological studyHeat characteristics
論文中文摘要:This study will center on the meteorological impact of clouds and its influence to the urban air temperature. Quantitative assessment over the behavior and temperature pattern was done using a five-year data of meteorological parameters obtain from the local weather and climate bureau. Urban heat island (UHI) is defined as the increased air temperature of the city over its surrounding sub-urban and rural areas and in this case of a five-year summer period of Taipei, Taiwan were heat temperatures are higher and can go beyond 39°C, acting dominant meteorological cloud cover factor is observe for its effect in temperature pattern. Analysis of local heat characteristics suggests the possibility of the believed theory Urban-scaled greenhouse effect that maybe affecting the patterns of the urban air temperature. An urban-scaled greenhouse effect is a theory that implies; when dense cloud covers the city, most of the supposed released long wave radiation or heat energy is trapped and reflected back by the dense clouds, creating a body of conserved heat that is prolonged in the area. The duration of conserved heat (DCH) is measured by the difference of the diurnal maximum and minimum temperature. To assess the value of the theory the daily cloud amount (CA) and its relationship with the DCH was tested with regression analysis. Calm days with the complete cycle of maximum and minimum temperature accordingly were selected and tested.
The five-year average (2008 – 2012) resulted in a regression value of R2 = 0.072. Although the years 2011 & 2012 showed a higher regression value of R2 = 0.265 and R2 = 0.104 respectively, certainly enough the data of years 2011 and 2012 revealed a higher ratio of days with less combination of high wind speed and rainfall which created less fluctuations. Trend pattern for the five summers showed similarities. Some days showed fluctuation but no negative trend of correlation was detected. The heat intensity (HI) is another type of temperature pattern that was observed against CA and DCH, it is characterized by the difference of maximum and minimum diurnal temperature. Suggestive with our analysis, all five-year summertime data of HI showed negative correlation with the CA and DCH, attesting a faster release of long wave radiation when clouds are less.
A general over view on urban texture and urban building patterns and its consequence to the thermal comfort are also assessed for this study. A 24-hour observation between concrete and soil showed some surprising data and revealed positive and negative characteristics of both. Soil reached a higher surface temperature than the concrete during the day, however, internal temperature stayed low. Concrete reached a lower surface temperature, however, internal temperature quickly builds up and being an impervious material the retention capability of heat was greater thus a longer release time of heat.
論文英文摘要:This study will center on the meteorological impact of clouds and its influence to the urban air temperature. Quantitative assessment over the behavior and temperature pattern was done using a five-year data of meteorological parameters obtain from the local weather and climate bureau. Urban heat island (UHI) is defined as the increased air temperature of the city over its surrounding sub-urban and rural areas and in this case of a five-year summer period of Taipei, Taiwan were heat temperatures are higher and can go beyond 39°C, acting dominant meteorological cloud cover factor is observe for its effect in temperature pattern. Analysis of local heat characteristics suggests the possibility of the believed theory Urban-scaled greenhouse effect that maybe affecting the patterns of the urban air temperature. An urban-scaled greenhouse effect is a theory that implies; when dense cloud covers the city, most of the supposed released long wave radiation or heat energy is trapped and reflected back by the dense clouds, creating a body of conserved heat that is prolonged in the area. The duration of conserved heat (DCH) is measured by the difference of the diurnal maximum and minimum temperature. To assess the value of the theory the daily cloud amount (CA) and its relationship with the DCH was tested with regression analysis. Calm days with the complete cycle of maximum and minimum temperature accordingly were selected and tested.
The five-year average (2008 – 2012) resulted in a regression value of R2 = 0.072. Although the years 2011 & 2012 showed a higher regression value of R2 = 0.265 and R2 = 0.104 respectively, certainly enough the data of years 2011 and 2012 revealed a higher ratio of days with less combination of high wind speed and rainfall which created less fluctuations. Trend pattern for the five summers showed similarities. Some days showed fluctuation but no negative trend of correlation was detected. The heat intensity (HI) is another type of temperature pattern that was observed against CA and DCH, it is characterized by the difference of maximum and minimum diurnal temperature. Suggestive with our analysis, all five-year summertime data of HI showed negative correlation with the CA and DCH, attesting a faster release of long wave radiation when clouds are less.
A general over view on urban texture and urban building patterns and its consequence to the thermal comfort are also assessed for this study. A 24-hour observation between concrete and soil showed some surprising data and revealed positive and negative characteristics of both. Soil reached a higher surface temperature than the concrete during the day, however, internal temperature stayed low. Concrete reached a lower surface temperature, however, internal temperature quickly builds up and being an impervious material the retention capability of heat was greater thus a longer release time of heat.
論文目次:ABSTRACT………………………………………………………………………….......I
ACKNOWLEDGEMENT…………………...…………………………………………III
TABLE OF CONTENTS………………………………………………………………IV
LIST OF FIGURES…………………………………………………………………….VI
LIST OF TABLES…………………………………………………………………….VII
Chapter I: Introduction..................................................................................................1
1.1 Introduction………………………………………….………………………………1
1.2 Aim of study…………………………...………………...…………………………..3
1.3 Content and scope…………………………………..………………………………..4
1.3.1 Study area…………………………………………………….………………4
1.3.2 Climate condition…………………………………….………………………5
1.4 Framework ok research……………………………………….……………………..7
1.5 Study limitation……………………………………………….……………………..8
Chapter II: Literature Review……………………………………….………………10
2.1 Urban morphology…………………………………………………….……….…...10
2.2 Characteristic of a tropical UHI……………………………………….……….…...10
2.3 Urban-scaled greenhouse effect………………….………………………….……...11
2.4 Land use/land cover (Urban texture)……………………………….……….……...13
2.5 Evapotranspiration…………………………………………………….…….……...13
Chapter III: Methodology………………………………………………….…………15
3.1 Assessment of acting meteorological parameters…………………….….…………15
3.1.1 Derivation of DCH………………………………………………….………19
3.1.2 Derivation of HI……………………………………………………..………20
3.2Thermo-physical character assessment of urban texture……………..……………..20
Chapter IV: Results and Discussion…………………………………………………23
4.1 Results of regression analysis………………………………………………..……..23
4.2 Results of correlation analysis of HI with CA and DCH…………………….…….29
4.3 Urban texture actual material testing…………………………………..…………...35
4.3.1 Concrete block and diurnal infrared experiment…………………..………..36
4.3.2 Soil block and diurnal infrared experiment…………………………..……..37
Chapter V: Conclusions and Recommendations………………….………………...38
5.1 Conclusion on regression analysis between CA and DCH………………..….…….38
5.2 Conclusions on association of HI with CA and DCH…………………….………..39
5.3 Manipulating DCH…………………………………………………….…………...41
5.3.1 Wind control design for future urban building pattern…………..………….41
5.4 Urban texture (concrete vs. soil)………………………………….….…………….44
5.5 Conclusion on urban-scaled greenhouse effect…………………………………….45
5.6 Recommendations for future studies……………………………………………….45
REFERENCE…………………………………………………………….…………….46
BIBLIOGRAPHY…………………………………………………………….………..48
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論文全文使用權限:同意授權於2014-02-10起公開