Open AccessNumerical Analysis on the Contribution of Urbanization to Wind Stilling: An Example over the Greater Beijing Metropolitan Area
Author(s) -
Aizhong Hou,
Guangheng Ni,
Hanbo Yang,
Zhidong Lei
Publication year - 2013
Publication title -
journal of applied meteorology and climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.079
H-Index - 134
eISSN - 1558-8432
pISSN - 1558-8424
DOI - 10.1175/jamc-d-12-013.1
Subject(s) - beijing , metropolitan area , urbanization , wind speed , environmental science , meteorology , climatology , china , geography , geology , economic growth , archaeology , economics
A decline of surface wind speed (wind stilling) has been observed in many regions of the world. The greater Beijing metropolitan area in China is taken as an example for analyzing the urbanization impact on wind stilling. This study set up five scenarios with different urbanization ratios and the same atmospheric forces and then simulated wind speed under each scenario using the next-generation Weather Research and Forecasting model. The results suggest that the correspondence between the regional average wind speed ratio of decrease Δ u and the ratio of urbanized area δ urban (%) fits the relationin summer andin winter. During the period 1961–2008, the ratio of urbanized area over the greater Beijing metropolitan area increased from 1.3% to 11.9%, which is speculated as the cause of a 0.4 m s −1 decline in regional average wind speed and the contributor to about 35% wind stilling.