scholarly journals Interaction between an Inland Urban Heat Island and a Sea-Breeze Flow: A Laboratory Study

2003 ◽  
Vol 42 (11) ◽  
pp. 1569-1583 ◽  
Author(s):  
A. Cenedese ◽  
P. Monti
Keyword(s):  
Urban Heat Island ◽  
Laboratory Study ◽  
Sea Breeze ◽  
Heat Island ◽  
Urban Heat

Sea Breeze Blowing into Urban Areas: Mitigation of the Urban Heat Island Phenomenon

2011 ◽  
pp. 11-32 ◽  
Author(s):  
Yoichi Kawamoto ◽  
Hiroshi Yoshikado ◽  
Ryozo Ooka ◽  
Hiroshi Hayami ◽  
Hong Huang ◽  
...  
Keyword(s):  
Urban Heat Island ◽  
Urban Areas ◽  
Sea Breeze ◽  
Heat Island ◽  
Urban Heat

scholarly journals Impacts of the Decadal Urbanization on Thermally Induced Circulations in Eastern China

2015 ◽  
Vol 54 (2) ◽  
pp. 259-282 ◽  
Author(s):  
Mengmeng Li ◽  
Zhichun Mao ◽  
Yu Song ◽  
Mingxu Liu ◽  
Xin Huang
Keyword(s):  
Urban Heat Island ◽  
Yangtze River ◽  
Eastern China ◽  
Sea Breeze ◽  
Hangzhou Bay ◽  
Heat Island ◽  
The Yangtze River ◽  
Thermally Induced ◽  
Urban Heat ◽  
Wuxi City

AbstractSignificant urbanization has occurred in the Yangtze River Delta region of eastern China, which exerts important effects on the local thermally induced circulations through regulating the heat flux and thermal structure. Previous studies lack a correct representation of the seasonal vegetation phenology associated with urban expansion, and therefore it is difficult to accurately describe the land–atmosphere coupling. In this study, high-resolution Moderate Resolution Imaging Spectroradiometer (MODIS) observations are used to describe the changes in land surface characteristics, including land-cover type, green vegetation fraction, and leaf area index with the Weather Research and Forecasting Model. The use of MODIS satellite observations provides a clear improvement in model performance when compared with ground-based measurements. A typical urban heat island is generated around Shanghai, Wuxi–Suzhou–Yangzhou, and cities along the Yangtze River and Hangzhou Bay, which subsequently modifies the local thermal circulations. The sea breeze is significantly enhanced over the north bank of Hangzhou Bay because of the increased land–sea temperature contrast. Several surface convergent zones are generated along the Shanghai–Suzhou–Wuxi city belt as a result of the combined effects of the urban heat island, the enhanced sea breeze, and the lake breeze at Lake Tai.

scholarly journals The Effects of Topography and Urban Agglomeration on the Sea Breeze Evolution over the Pearl River Delta Region

Atmosphere ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 39
Author(s):  
Guoqing He ◽  
Guanghui Yuan ◽  
Yubao Liu ◽  
Yin Jiang ◽  
Yuewei Liu ◽  
...  
Keyword(s):  
Urban Heat Island ◽  
Pearl River Delta ◽  
Sea Breeze ◽  
River Delta ◽  
Pearl River ◽  
Heat Island ◽  
Sea Breezes ◽  
The Pearl River Delta ◽  
Urban Heat ◽  
The Pearl River

Sea breezes are one of the most important weather processes affecting the environmental and climatic features over coastal areas, and the sea breeze from the Pearl River Estuary (PRE) has significant effects on the Pearl River Delta (PRD) region. We simulated a typical sea breeze process that occurred on 27 December 2020 in the PRD region using the Weather Research and Forecasting (WRF) model to quantify the effects of topography and city clusters on the development of the sea breeze circulation. The results show that: (1) the topography on the west coast of the PRD tends to block the intrusion of the sea breeze and detour it along the eastern part of the terrain in the southeast of Jiangmen. The depth of sea breeze along the position of the detour is increased by 120 m, the penetration distance is increased by 40 km, the maximum intensity of sea breeze decreases by ~0.4 m/s, and the time of maximum speed delays for 4 h. However, on the east coast, the topography promotes the sea breeze, resulting in an occurrence about 4 h earlier due to the heating effects. The depth and the speed of the sea breeze are increased by 466 m and 1.2 m/s, respectively. (2) Under the influence of Urban Heat Island Circulation (UHIC), the sea breezes reach cities near the coast an hour earlier and are later inhibited from propagating further inland. Moreover, a wind convergence zone with a speed of 3–5 m/s and a width of about 25 km is formed along the boundary of suburbs and cities in the PRD region. As a result, two important convergence areas: Foshan–Guangzhou, and Dongguan–Shenzhen are formed. (3) Overall, the topography has a more remarkable impact on the mesoscale wind field especially in the mountain and bay areas, resulting in an average speed disturbance of 2.8 m/s. The urban heat island effect is relatively small and on average it causes only ± 0.9–1.8 m/s wind speed perturbations in the periphery of two convergence areas and over PRE.

Forecasting the New York City Urban Heat Island and Sea Breeze during Extreme Heat Events

2013 ◽  
Vol 28 (6) ◽  
pp. 1460-1477 ◽  
Author(s):  
Talmor Meir ◽  
Philip M. Orton ◽  
Julie Pullen ◽  
Teddy Holt ◽  
William T. Thompson ◽  
...  
Keyword(s):  
New York ◽  
New York City ◽  
Urban Heat Island ◽  
York City ◽  
Sea Breeze ◽  
Extreme Heat ◽  
Heat Island ◽  
Extreme Heat Events ◽  
Urban Heat ◽  
Heat Events

Abstract Two extreme heat events impacting the New York City (NYC), New York, metropolitan region during 7–10 June and 21–24 July 2011 are examined in detail using a combination of models and observations. The U.S. Navy's Coupled Ocean–Atmosphere Mesoscale Prediction System (COAMPS) produces real-time forecasts across the region on a 1-km resolution grid and employs an urban canopy parameterization to account for the influence of the city on the atmosphere. Forecasts from the National Weather Service's 12-km resolution North American Mesoscale (NAM) implementation of the Weather Research and Forecasting (WRF) model are also examined. The accuracy of the forecasts is evaluated using a land- and coastline-based observation network. Observed temperatures reached 39°C or more at central urban sites over several days and remained high overnight due to urban heat island (UHI) effects, with a typical nighttime urban–rural temperature difference of 4°–5°C. Examining model performance broadly over both heat events and 27 sites, COAMPS has temperature RMS errors averaging 1.9°C, while NAM has RMSEs of 2.5°C. COAMPS high-resolution wind and temperature predictions captured key features of the observations. For example, during the early summer June heat event, the Long Island south shore coastline experienced a more pronounced sea breeze than was observed for the July heat wave.

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