Publications

O'Malley, C; Kikumoto, H (2022). An investigation into heat storage by adopting local climate zones and nocturnal-diurnal urban heat island differences in the Tokyo Prefecture. SUSTAINABLE CITIES AND SOCIETY, 83, 103959.

Abstract
This study aims to identify urban forms that are prone to heat storage in the Tokyo Prefecture in Japan. First, local climate zones (LCZ) were identified with 100 m pixel resolution using Landsat 8 data. LCZs include urban forms that are predominantly defined by building compactness and height. The spatial distribution of urban heat island intensity was obtained using LCZs and MODIS 100 m resolution land surface temperatures from 2013 to 2021. The difference between diurnal and nocturnal heat island intensity (delta UHI) was evaluated as an indicator of the relative heat storage effect between the LCZs. Lower delta UHIs suggest increased relative heat-storage capacities. Seasonal average delta UHIs for compact and super high-rise, high-rise, mid-rise, and low-rise LCZs were 3.1 ?, 4.1 ?, 5.8 ?, and 8.3 ?, respectively. Additionally, & UDelta;UHIs for open and super high-rise, high-rise, and mid-rise LCZs were 5.8 & DEG;C, 6.4 ?, and 7.8 ?, respectively. Slope data also validated the LCZ height. LCZ and slope analyzes found lower delta UHI magnitudes in all LCZs with high-rise buildings. Also, compact LCZs had lower & UDelta;UHI magnitudes than open LCZs at corresponding heights. Therefore, higher-rise and compact LCZs are suggested to have larger relative heat storage effects than lower-rise and open LCZs.

DOI:
10.1016/j.scs.2022.103959

ISSN:
2210-6715