Mesoscale-to-LES Modeling of the Sea-Breeze Front and Its Interaction with Turbulent Flows over a Coastal City

中尺度气象学 海风 前线(军事) 气象学 地质学 气候学 湍流 环境科学 海洋学 地理
作者
Guixing Chen,Xiangrui Kong,Tetsuya Takemi,Kazuo Saito,Hiromu Seko,Junshi Ito,Toshiki Iwasaki
出处
期刊:Monthly Weather Review [American Meteorological Society]
卷期号:153 (10): 1909-1923
标识
DOI:10.1175/mwr-d-24-0276.1
摘要

Abstract The sea-breeze front (SBF) intruding into coastal cities can lead to sudden changes in local weather and air quality. Its structures and disturbances over the urban surface with dense tall buildings have been a challenge for numerical modeling. In this study, we present the fine-scale structures of an actual SBF simulated by mesoscale-to–large-eddy simulation (LES) models at 3-m resolution in a 15-km domain of Sendai City, Japan. The head of SBF is shown to develop remarkable three-dimensional structures in the downtown area, where it interacts strongly with the microscale turbulent flows induced by buildings. Localized strong updrafts form at the lees of high-rise buildings within a few minutes just after the passing of the SBF, as ejections emerge in urban warm air mass surrounded by the cool air mass of the sea breeze. Downdrafts in the sea breeze are seen at the windward sides of high-rise buildings and help to increase wind speed in adjacent streamwise streets. After the passage of SBF, near-surface wind speeds exhibit high-frequency fluctuations with a period of 2–3 min, in good agreement with in situ observations in the downtown area. These results demonstrate the good capabilities of the building-resolving LES of both mesoscale weather conditions and microscale turbulent flows over a large city for the prediction of urban weather and environment in the streets. Significance Statement The sea-breeze front (SBF) has significant impacts on the local weather in coastal cities around the world. It is challenging to simulate the fine-scale structures of SBF and their interactions with turbulent flows over the cities. In this study, we present an improved building-resolving numerical simulation of an actual SBF that develops fine-scale structures in the downtown area with high-rise buildings. The SBF head is shown to be strongly disturbed by buildings and interacts with urban turbulent flows, which drive local strong updrafts and vertical transports of heat. The passing SBF also leads to high-frequency fluctuations in the simulated surface wind speed, in good agreement with observations. The results are helpful for improving our understanding and prediction of the local winds at street scales during the passing of the front.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Frank完成签到 ,获得积分10
1秒前
1秒前
我是老大应助莫里采纳,获得10
1秒前
2秒前
负责雨安完成签到 ,获得积分10
3秒前
5秒前
zhangwuhui发布了新的文献求助10
5秒前
Auxin完成签到,获得积分10
7秒前
9秒前
秀丽雁风完成签到,获得积分10
9秒前
青年才俊发布了新的文献求助30
11秒前
清爽达完成签到 ,获得积分0
12秒前
楼马完成签到 ,获得积分10
13秒前
gzhoax应助中科院的稻荷神采纳,获得10
13秒前
莫里发布了新的文献求助10
13秒前
13秒前
小饼一定要上岸完成签到 ,获得积分10
14秒前
JOY完成签到 ,获得积分10
16秒前
cyj完成签到,获得积分10
16秒前
调皮的代双完成签到 ,获得积分10
16秒前
yeSui3yi完成签到 ,获得积分0
17秒前
fishswim1完成签到,获得积分10
19秒前
20秒前
鹏飞九霄完成签到,获得积分10
22秒前
22秒前
俭朴听南完成签到 ,获得积分10
23秒前
青年才俊发布了新的文献求助10
25秒前
tree发布了新的文献求助10
26秒前
矜持完成签到 ,获得积分10
27秒前
勤恳雅莉发布了新的文献求助10
28秒前
ranlan完成签到 ,获得积分10
30秒前
verdure完成签到,获得积分10
31秒前
醋酸柠檬完成签到,获得积分10
33秒前
wanci应助秀丽雁风采纳,获得10
34秒前
38秒前
传奇3应助korosi采纳,获得10
39秒前
莫里完成签到,获得积分10
39秒前
何浏亮完成签到,获得积分10
39秒前
tree完成签到,获得积分10
40秒前
阿may完成签到,获得积分10
42秒前
高分求助中
(应助此贴封号)【重要!!请各用户(尤其是新用户)详细阅读】【科研通的精品贴汇总】 10000
Applied Min-Max Approach to Missile Guidance and Control 5000
Metallurgy at high pressures and high temperatures 2000
Inorganic Chemistry Eighth Edition 1200
Anionic polymerization of acenaphthylene: identification of impurity species formed as by-products 1000
The Psychological Quest for Meaning 800
Signals, Systems, and Signal Processing 610
热门求助领域 (近24小时)
化学 材料科学 医学 生物 纳米技术 工程类 有机化学 化学工程 生物化学 计算机科学 物理 内科学 复合材料 催化作用 物理化学 光电子学 电极 细胞生物学 基因 无机化学
热门帖子
关注 科研通微信公众号,转发送积分 6326044
求助须知:如何正确求助?哪些是违规求助? 8142735
关于积分的说明 17072233
捐赠科研通 5379182
什么是DOI,文献DOI怎么找? 2854220
邀请新用户注册赠送积分活动 1831847
关于科研通互助平台的介绍 1683141