[D1] 地域分析１

10:00 AM - 10:20 AM JST(1:00 AM - 1:20 AM UTC)

[D1-03] Summer Landsat Land Surface Temperature Analysis for Urban Heat Island Trend Assessment in Nagoya, Japan

Aye Thandar Wai¹, *Kenta Taniguchi¹, Yuto Takada¹, Mei Matsubara¹, Seitaro Okada¹, Chikara Uchida¹ (1. Nippon Koei Urban Space Co., Ltd.)

Keywords:

Landsat,Urban Heat Island,Surface Temperature,Transit-Oriented Development,TOD,Nagoya City

This study analyzed summer seasonal Landsat-derived land surface temperature (LST) trends over a 40-year period (1986-2025) at subway stations in Nagoya City, Aichi Prefecture, Japan, to evaluate long-term patterns of the surface urban heat island (SUHI) effect. The analysis utilized the Collection 2 Level-2 Science Product (L2SP), in which LST images are atmospherically corrected and resampled to a 30 m resolution. Numerical experiments were conducted to investigate the spatiotemporal behavior of summer LST anomaly percentiles within 1 km buffer zones around selected subway stations. The results revealed shifts in the inter-station relationships of summer LST anomalies. These findings suggest that geospatial processing of L2SP data provides reliable metrics for assessing local SUHI intensification at the neighborhood scale (approximately 1 km) under mid-morning conditions.