The impact of heat waves on surface urban heat island and local economy in Cluj-Napoca city, Romania

Herbel, Ioana; Croitoru, Adina‐Eliza; Rus, Adina Viorica; Roşca, Cristina Florina; Harpa, Gabriela Victoria; Ciupertea, Antoniu-Flavius; IONUT, RUS

doi:10.1007/s00704-017-2196-4

Cited by 47 publications

(27 citation statements)

References 42 publications

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“…It may advance the timing of the onset of HWs, and help the HWs become more frequent, more intense, and longer lasting (Luo and Lau 2017;Lin et al 2018). And the urban heat island is also related to the HW magnitude (Herbel et al 2018). However, the detailed physical mechanisms responsible for the behaviors of different categories of HWs in different regions may be rather complicated, which deserves further in-depth investigation in the future studies in order to get a full picture for the understanding of the change in HWs.…”

Section: Summary and Discussionmentioning

confidence: 99%

Observed changes in heat waves with different severities in China during 1961–2015

Xie

Zhou

You

et al. 2020

Theor Appl Climatol

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Heat waves (HWs) exert severe impacts on ecosystem, social economy, and human lives. Thus, changes in HWs under a warming climate have triggered extensive interests. In this study, the authors developed a new method to identify the HW events in China by double thresholds and further classified them into four categories (i.e., mild, moderate, severe, and extreme HWs) according to their magnitudes by using the daily maximum temperature data from 701 observation stations. On this basis, the spatiotemporal features of HWs with different severities in China from 1961 to 2015 were investigated. The results show that the high HW frequency mainly appears in Jianghuai, South China and western Northwest China. Moreover, the high frequencies of moderate, severe, and extreme HWs occur from June to August and reach the peak in July, while the mild HW frequency is compared from May to September. Since the 1960s, the frequencies of the mild, moderate, severe, and extreme HWs in China have increased significantly with rates of 7.5, 4.3, 1.4, and 1.8 events per year, respectively. The increases are the greatest in July for the moderate, severe, and extreme HWs while comparable during May to September for the mild HW. Besides, an interdecadal change is found to occur in the late 1990s. Compared with the former period (1961-1996), the occurrence of the extreme HWs during the latter period (1997-2015) has increased most significantly in eastern Northwest China and North China, while the frequency of the mild HWs increases most significantly in Jianghuai and South China.

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Section: Summary and Discussionmentioning

confidence: 99%

Observed changes in heat waves with different severities in China during 1961–2015

Xie

Zhou

You

et al. 2020

Theor Appl Climatol

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“…One of the most studied urban climate phenomenon is the "urban heat island" (UHI) effect (Hiemstra et al, 2017, Arnfield, 2003. In the last years the intrest for research of UHI in Romania is increasing (Cheval et al, 2015;Herbel et al, 2017;. This phenomenon is caused by the thermo-caloric specificity of different types of surfaces specific to urban centers (Shatz, 2014; Cheval, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon is caused by the thermo-caloric specificity of different types of surfaces specific to urban centers (Shatz, 2014; Cheval, 2015). The UHI phenomenon is characterized by multitemporal variations (Oke, 2002;Schatz, 2014), becoming extremely intense and generating major socio-human problems (Herbel, 2017), especially during the warm semester of the year (Patz, 2005;Luber, 2008).The UHI is determined by a series of natural and anthropogenic factors that involve an increase in air temperature within cities from peri-urban areas (Hiemstra et al, 2017), to urban areas by anthropogenic heat released from buildings and artificial surfaces (Arnfield, 2003). Among these several factors are distinguished: high amounts of solar radiation which generates radiative heat waves especially în warm season , height regime of buildings or the albedo of anthropogenic surfaces (Cheval, 2015;Kyriakodis et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Nocturnal Urban Heat Island of Iaşi During a Summer Heat Wave (1-6 of August 2017)

Ichim¹,

Sfîcă²,

Kadhim-Abid³

2018

Air and Water Components of the Environment Conference

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Characteristics of nocturnal urban heat island of Iaşi during a summer heat wave (1-6 of august 2017). This paper aims to investigate in details the specific of the nocturnal urban heat island in Iaşi city area during a particular heat wave in summer time. For this, we have conducted a series of expeditionary measurements on air temperature for the interval between 1 and 6 of August 2017 which was charaterized by excessive heat conditions. Air temperature measurements were made around midnight time and were performed along westeast transects crossing the city.The main results show an intensity of 3-4°C for the nocturnal urban heat island of Iaşi during heat wave condition. Beside this, the structure of the urban heat island was also influenced by the atmospheric stability which enhanced the occurence thermal inversion phenomena. In these conditions more dense cold air descends on the rivers valleys generating strong cooling of 4.0-5.0°C in low area of the city comparatively to the city center.

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“…The same study presents positive signs for the future, as 90% of respondents said they would enjoy spending more time in nature, although 77% of them are aware that this means changing their daily routine and lifestyle. Another problem brought by urbanization is related to heat islands, with major cities in Romania (such as Bucharest, Iasi, Cluj) monitoring and trying to identify, if not providing immediate solutions, at least some warning mechanisms [60][61][62]. Although the greenhouse gas emissions in Romania are below the EU average, due to the absence of large industrial platforms, there are still problems related to gas emissions from waste control [63].…”

Section: Methodsmentioning

confidence: 99%

Rurbanization—Making the City Greener: Young Citizen Implication and Future Actions

et al. 2020

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City life has become the norm for most of the global population and building sustainable cities is a growing trend, together with an increased focus on healthier lifestyles in urban settings. Given this framework, the concept of ‘rurbanization’ is gaining momentum as more and more people are interested in bringing natural green spaces within the urban setting. For this purpose, a research (online survey on a sample of 500 respondents) was developed to discover youths’ perceptions on what a sustainable city means, their perspectives on the urbanization problems, and willingness to take action towards improving the green aspects of their urban life. Results revealed that sustainable life perception vary a lot across the young generation, but opinions on what are the city life issues tend to converge to similar points, such as air quality, disconnection with nature, greenhouse effect, urban heat islands, and water quality. When it comes to rurbanization solutions for a greener urban life, young people lean more towards individual solutions, be it an easy and short-term one, such as endowing their home with more green plants, or a more drastic one, such as moving altogether from the city area towards greener locations. Results were also used in designing a conceptual model for actions towards rurbanization.

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The impact of heat waves on surface urban heat island and local economy in Cluj-Napoca city, Romania

Cited by 47 publications

References 42 publications

Observed changes in heat waves with different severities in China during 1961–2015

Observed changes in heat waves with different severities in China during 1961–2015

Characteristics of Nocturnal Urban Heat Island of Iaşi During a Summer Heat Wave (1-6 of August 2017)

Rurbanization—Making the City Greener: Young Citizen Implication and Future Actions

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