Complying with the demand of standardization in outdoor thermal comfort: a first approach to the Global Outdoor Comfort Index (GOCI)

Golasi, Iacopo; Salata, Ferdinando; Vollaro, Emanuele de Lieto; Coppi, Massimo

doi:10.1016/j.buildenv.2017.12.021

Cited by 85 publications

(41 citation statements)

References 73 publications

(114 reference statements)

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“…For studies in which the PET index in subtropical climates was used, different patterns of definition of the thermal comfort zone for different locations were observed, even when these places are in the same climatic zone . The same behavior can be observed for the SET and PMV indices as well [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].…”

Section: Introductionsupporting

confidence: 58%

“…Several studies have detected differences in outdoor thermal comfort across different climatic regions [24][25][26][27] and have pointed to the need for additional fieldwork research on subjective human perception in different climatic regions [20], given that most of those surveys currently available have mainly been conducted in areas with temperate or tropical climates.…”

Section: Introductionmentioning

confidence: 99%

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Subjective Human Perception of Open Urban Spaces in the Brazilian Subtropical Climate: A First Approach

Gobo

Galvani

Wollmann

2018

Climate

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This research concerns a first approach to adapt the thermal comfort bands of the Physiological Equivalent Temperature (PET), New Standard Effective Temperature (SET), and Predicted Mean Vote (PMV) indices to Santa Maria's population, Rio Grande do Sul, Brazil, on the basis of the application of perception/sensation questionnaires to inhabitants while, at the same time, recording meteorological attribute data. Meteorological and thermal sensation data were collected from an automatic weather station installed on paved ground in the downtown area, which contained the following sensors: a scale gauge; a global radiation sensor; a temperature and humidity sensor; a speed and wind direction sensor; a gray globe thermometer. First of all, air temperature, gray globe temperature, relative air humidity, wind speed, wind gust, global solar radiation and precipitation were collected. People were interviewed using a questionnaire adapted from the model established by ISO 10551. The results demonstrated the efficiency of the linear regression model and the adequacy of the interpretive indexes, presenting results different from those analyzed by other authors in different climatic zones. These differences meet the analyzed literature and attest to the effectiveness of the calibration method of the PET, SET, and PMV indices for the Brazilian subtropical climate. After calibration, the PET index hit rate increased from 32.8% to 69.3%. The SET index, which had an initial hit rate of 34.6% before calibration, reached a hit-rate of 64.9%, while the PMV index increased from 35.9% to 58.7%.

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Section: Introductionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Subjective Human Perception of Open Urban Spaces in the Brazilian Subtropical Climate: A First Approach

Gobo

Galvani

Wollmann

2018

Climate

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“…The Global Outdoor Comfort Index (GOCI), for instance, uses empirical rela- [21]. Only few studies on thermal comfort in high latitudes exist.…”

mentioning

confidence: 99%

Outdoor Universal Thermal Comfort Index Climatology for Alaska

Mölders¹

2019

ACS

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Data from 456 surface meteorological sites in Alaska, eastern Russia and northwest Canada for 1979-2017 were used to model hourly universal thermal comfort indices (UTCIs) under consideration of Alaska-appropriate clothing. The results served to determine a high-resolution climatology of thermal comfort levels for Alaska at various temporal and spatial scales as well as the frequency of thermal stress levels. On 1979-2017 average, various degrees of cold stress occurred with highest percentage on the Alaska West Coast and along the Arctic Ocean. In the continental and Inside Passage region, no thermal stress had the highest percentage of occurrence. In Interior Alaska, both strong heat and extreme cold stress occurred occasionally. At most sites and in all Alaska Köppen-Geiger bio-climate regions, the absolute range between monthly means of daily minimum and maximum UTCIs was larger than that of monthly means of daily minimum and maximum air temperatures. Major contributors to thermal discomfort (shortwave radiation, air temperature, moisture, wind speed) varied among bio-climate regions and in the diurnal and annual courses.

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“…For instance, urban trees provide shade for pedestrians and evaporative cooling (Bowler et al, 2010;Konarska et al, 2016), while an increase in ground vegetation can further provide storm water retention (Berland et al, 2017). In addition to urban climate and water regulation, urban vegetation also provides other ecosystem services, for example, carbon storage (Nowak and Crane, 2002), enhanced biodiversity (Grimm et al, 2008), and aesthetic, cultural, and health benefits (Salmond et al, 2016;Ng et al, 2018). Therefore, many policy-makers promote an increase of urban vegetation (Lim and Lu, 2016).…”

Section: Introductionmentioning

confidence: 99%

An urban ecohydrological model to quantify the effect of vegetation on urban climate and hydrology (UT&C v1.0)

et al. 2020

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Abstract. Increasing urbanization is likely to intensify the urban heat island effect, decrease outdoor thermal comfort, and enhance runoff generation in cities. Urban green spaces are often proposed as a mitigation strategy to counteract these adverse effects, and many recent developments of urban climate models focus on the inclusion of green and blue infrastructure to inform urban planning. However, many models still lack the ability to account for different plant types and oversimplify the interactions between the built environment, vegetation, and hydrology. In this study, we present an urban ecohydrological model, Urban Tethys-Chloris (UT&C), that combines principles of ecosystem modelling with an urban canopy scheme accounting for the biophysical and ecophysiological characteristics of roof vegetation, ground vegetation, and urban trees. UT&C is a fully coupled energy and water balance model that calculates 2 m air temperature, 2 m humidity, and surface temperatures based on the infinite urban canyon approach. It further calculates the urban hydrological fluxes in the absence of snow, including transpiration as a function of plant photosynthesis. Hence, UT&C accounts for the effects of different plant types on the urban climate and hydrology, as well as the effects of the urban environment on plant well-being and performance. UT&C performs well when compared against energy flux measurements of eddy-covariance towers located in three cities in different climates (Singapore, Melbourne, and Phoenix). A sensitivity analysis, performed as a proof of concept for the city of Singapore, shows a mean decrease in 2 m air temperature of 1.1 ∘C for fully grass-covered ground, 0.2 ∘C for high values of leaf area index (LAI), and 0.3 ∘C for high values of Vc,max (an expression of photosynthetic capacity). These reductions in temperature were combined with a simultaneous increase in relative humidity by 6.5 %, 2.1 %, and 1.6 %, for fully grass-covered ground, high values of LAI, and high values of Vc,max, respectively. Furthermore, the increase of pervious vegetated ground is able to significantly reduce surface runoff.

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Complying with the demand of standardization in outdoor thermal comfort: a first approach to the Global Outdoor Comfort Index (GOCI)

Cited by 85 publications

References 73 publications

Subjective Human Perception of Open Urban Spaces in the Brazilian Subtropical Climate: A First Approach

Subjective Human Perception of Open Urban Spaces in the Brazilian Subtropical Climate: A First Approach

Outdoor Universal Thermal Comfort Index Climatology for Alaska

An urban ecohydrological model to quantify the effect of vegetation on urban climate and hydrology (UT&C v1.0)

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