Japan Geoscience Union Meeting 2019

Presentation information

[J] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-CG Complex & General

[A-CG43] Adaptation for climate change and social implementation

Sun. May 26, 2019 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Yoichi Ishikawa(JAPAN Agency for Marine-Earth Science and Technology), Shingo Watanabe(Japan Agency for Marine-Earth Science and Technology), KOJI DAIRAKU(National Research Institute for Earth Science and Disaster Resilience)

[ACG43-P01] Impact of urbanization on the surface air temperature across Bulgaria

*Lidia Lazarova Vitanova1, Hiroyuki Kusaka2 (1.Graduate School of Life and Environmental Sciences, the University of Tsukuba, 2.Center for Computational Sciences, the University of Tsukuba)

Keywords:Urbanization, Weather Research and Forecasting model, Bulgarian cities

This study investigated the impact of urbanization on the surface air temperatures across Bulgaria. Our target locations are the major Bulgarian cities – Sofia, Plovdiv and Varna. In this study, we use the Weather Research and Forecasting (WRF) model with 1-km horizontal resolution to simulate month of July between 2011 and 2013. First, the results from the control simulation were verified against observations. The results show that the WRF model reproduced reasonably the diurnal temperature distributions for both of urban and rural areas. The model mean biases ranged from −0.76 to 0.19 °C. Second, the impacts of the urbanization on the surface air temperatures are evaluated. The results showed significant nocturnal temperatures increases by 2.6, 2.9 and 2.2 °C in Sofia, Plovdiv and Varna compared to those in the rural areas, while in daytime these increases are around 1.0 °C.