1:45 PM - 3:15 PM
[O05-P10] Urban Heat Island phenomenon in the central of Tsukuba city
Keywords:Urban Heat Island phenomenon, Field-portable Forced Ventilation Tube, Mobile measurement, Land use, Stationary measurement
Background and purpose of the study
Focuses on Tsukuba city, I investigated the relationship between land use and air temperature distribution in stationary observation. We found that the heat island phenomenon is occurring in Tsukuba city. However, the characteristics analysed. From previous my research, stationary and mobile measurement know it is good to see the relationship between land use and air temperature. Also, according to previous studies, mobile measurement using a "Field-portable Forced Ventilation Tube", make accurate observations.
Therefore, I aimed at investigating how land use affects temperature by doing stationary measurement and mobile measurement using a "Field-portable Forced Ventilation Tube".
Definition of the urban heat island
It is the phenomenon that the temperature of the urban area becomes higher than that of the suburb area. when we drew a distribution map of the temperature, a high temperature level was distributed over the shape such as the island around a city.
Method of the study
・Stationary measurement
I established data logger for measuring air temperature and collect the data of temperature at stevenson screen in 9 elementary schools of Tsukuba city. Then, I investigated the relationship between temperature and proportion of land use within radius of 200, 500, 1000 and 2000 m.
・Mobile measurement
I installed the thrmometer with "Field-portable Forced Ventilation Tube" on the bicycle. Then, I measured the temperature and location at 10-second intervals. Lastly, put the data on the map and shows the temperature distribution.
Result and Consideration of the study
・Stationary measurement
Forest, especially 500m buffer, found that strong negative correlation. It is perceived impact on lowering the temperature.
Building site, particularly a 500m buffer, found that strong positive correlation. It is perceived impact on highering the temperature.
・Mobile measurement
Able to do high-precision observation by using "Field-portable Forced Ventilation Tube". Also, we could see forests and agricultural land in the low temperature area. Forests are considered effective in lowering the temperature.
On the other hand, we could see building site in the high temperature area. Building site is considered the effect of rasing temperature.
Conclusion
In considering the effect of buffer from a stationary measurement, that, especially 500m buffer forests and building sites for temperature effect tends to be found.
From the result of mobile measurement, able to do high-precision observation by using "Field-portable Forced Ventilation Tube", so it is good to use for mobile measurement.
Also, considered at the city scale, 500m buffer of building sites and forests for tempereature sensitive affecting cause, changes in temperature. At the block scale, there is no big difference of temperature. However, it is thought to have contributed to lowering the temperature can have a street trees , just that.
Ackowledgments
This study was adopted to University of Tsukuba GFEST program. Associate Prof. Wakazuki and graduate student Kosuke Igari advised me a lot of information.
Focuses on Tsukuba city, I investigated the relationship between land use and air temperature distribution in stationary observation. We found that the heat island phenomenon is occurring in Tsukuba city. However, the characteristics analysed. From previous my research, stationary and mobile measurement know it is good to see the relationship between land use and air temperature. Also, according to previous studies, mobile measurement using a "Field-portable Forced Ventilation Tube", make accurate observations.
Therefore, I aimed at investigating how land use affects temperature by doing stationary measurement and mobile measurement using a "Field-portable Forced Ventilation Tube".
Definition of the urban heat island
It is the phenomenon that the temperature of the urban area becomes higher than that of the suburb area. when we drew a distribution map of the temperature, a high temperature level was distributed over the shape such as the island around a city.
Method of the study
・Stationary measurement
I established data logger for measuring air temperature and collect the data of temperature at stevenson screen in 9 elementary schools of Tsukuba city. Then, I investigated the relationship between temperature and proportion of land use within radius of 200, 500, 1000 and 2000 m.
・Mobile measurement
I installed the thrmometer with "Field-portable Forced Ventilation Tube" on the bicycle. Then, I measured the temperature and location at 10-second intervals. Lastly, put the data on the map and shows the temperature distribution.
Result and Consideration of the study
・Stationary measurement
Forest, especially 500m buffer, found that strong negative correlation. It is perceived impact on lowering the temperature.
Building site, particularly a 500m buffer, found that strong positive correlation. It is perceived impact on highering the temperature.
・Mobile measurement
Able to do high-precision observation by using "Field-portable Forced Ventilation Tube". Also, we could see forests and agricultural land in the low temperature area. Forests are considered effective in lowering the temperature.
On the other hand, we could see building site in the high temperature area. Building site is considered the effect of rasing temperature.
Conclusion
In considering the effect of buffer from a stationary measurement, that, especially 500m buffer forests and building sites for temperature effect tends to be found.
From the result of mobile measurement, able to do high-precision observation by using "Field-portable Forced Ventilation Tube", so it is good to use for mobile measurement.
Also, considered at the city scale, 500m buffer of building sites and forests for tempereature sensitive affecting cause, changes in temperature. At the block scale, there is no big difference of temperature. However, it is thought to have contributed to lowering the temperature can have a street trees , just that.
Ackowledgments
This study was adopted to University of Tsukuba GFEST program. Associate Prof. Wakazuki and graduate student Kosuke Igari advised me a lot of information.