Nonlinear changes in urban heat island intensity, urban breeze intensity, and urban air pollutant concentration with roof albedo

Autor:	Kyeongjoo Park, Jong-Jin Baik
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Roof albedo Urban heat island Urban breeze circulation Pollutant dispersion Urban air quality Cool roof Medicine Science
Zdroj:	Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Druh dokumentu:	article
ISSN:	2045-2322
DOI:	10.1038/s41598-024-76935-4
Popis:	Abstract This study systematically examines how the urban heat island (UHI) and urban breeze circulation (UBC) respond to an increase in roof albedo (α r) and its influence on urban air pollutant dispersion. For this, idealized ensemble simulations are performed using the Weather Research and Forecasting (WRF) model. The increase in α r from 0.20 to 0.65 decreases the UHI intensity, UBC intensity, and urban planetary boundary layer (PBL) height in the daytime (from 1200 to 1700 LST) by 47%, 36%, and 6%, respectively. As both UBC intensity and urban PBL height decrease, the daytime urban near-surface passive tracer concentration increases by 115%. The daytime UHI intensity, UBC intensity, and urban tracer concentration nonlinearly change with α r: For 0.10 ≤ α r
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/95c4e3c20d134f7993031b7ef4d1530c Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.