Results and Discussion

2.3.1 Collected Temperature and Factor Data,

and Mesh Data Results

The mean temperatures in Minato-ku in August are shown in Fig. 2.5. Some of the temperature data and factor data used in this study are described as follows. Temperature data were obtained in August 2007 from readings taken by digital weather stations set up at 1.5 m above ground level at 27 sites in Minato-ku, including schools, parks, and other public facilities. The mean daily maximum temperature was calculated for each site, and the values between the observation points were found by surface interpolation (Fig. 2.6).

Results and DiscussionFrom Fig. 2.6 it can be seen that the hottest region of 33 °C or higher occurs primarily around Roppongi in the northern Azabu area, and extends from the

Results and Discussion

Results and Discussion

Fig. 2.5 Mean temperatures in Minato-ku in August

 

Less than 29 5"C

 

Results and Discussion

(Excluded; adjacent to Route 246)

 

* (Excluded® adjacent to Route

 

Digital weather

 

Azabu

 

Shiba

 

station

 

Excluded observation

 

point

 

luded; adjacent to

 

Results and Discussion

Results and Discussion

Подпись: xcluded; adjacent”(Excluded: adjacent to JR Tokaido Sbinkansen)

Fig. 2.6 Temperature distribution on a 50-m mesh

Results and Discussion

Fig. 2.7 Green space distribution

northern Shiba area to Akasaka. The next warmest regions are Shirokane in the Takanawa area and Takanawa in the Shibaura-Konan area.

Figure 2.7 shows the distribution of green space in Minato-ku. Those areas with the largest vegetation cover are the Akasaka Imperial Gardens and Aoyama Cem­etery to the north, the Institute of Nature Study attached to the National Museum of Nature and Science in the west, and Shiba Park and its environs in the center of Minato-ku. Large parks account for the main green spaces. Other areas lack green space and have less than 500 m2 vegetation per 2,500 m2 (less than 20 % green coverage ratio).

Figure 2.8 shows the distribution of anthropogenic heat emissions in Minato-ku. Emissions are highest in the area reaching from Shimbashi and Roppongi to Hamamatsu-cho, which has a high concentration of commercial buildings, and crowded arterial routes such as metropolitan expressways, national highways, and areas adjacent to those routes.

Подпись: hibaura !onan Results and Discussion
Подпись: Akasaka
Подпись: Takanawa

Fig. 2.8 Distribution of anthropogenic heat emissions